Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.
2018Lock-in Thermography. Third edition
Breitenstein, O.; Warta, W.; Schubert, M.C.
Book
2017Angle dependence of solar cells and modules: The role of cell texturization
Geisemeyer, I.; Tucher, N.; Müller, B.; Steinkemper, H.; Hohl-Ebinger, J.; Schubert, M.C.; Warta, W.
Journal Article
2017Degradation of Crystalline Silicon Due to Boron Oxygen Defects
Niewelt, T.; Schön, J.; Warta, W.; Glunz, S.W.; Schubert, M.C.
Journal Article
2017Material limits of multicrystalline silicon from state-of-the-art photoluminescence imaging techniques
Schindler, F.; Giesecke, J.; Michl, B.; Schön, J.; Krenckel, P.; Riepe, S.; Warta, W.; Schubert, M.C.
Journal Article, Conference Paper
2017Separation of the surface and bulk recombination in silicon by means of transient photoluminescence
Heinz, F.D.; Warta, W.; Schubert, M.C.
Journal Article
2017Solar cell efficiency tables (version 49)
Green, M.A.; Emery, K.; Hishikawa, Y.; Warta, W.; Dunlop, E.D.; Levi, D.H.; Ho-Baillie, A.W.
Journal Article
2017Solar cell efficiency tables (version 50)
Green, M.A.; Hishikawa, Y.; Warta, W.; Dunlop, E.D.; Levi, D.H.; Hohl-Ebinger, J.; Ho-Baillie, A.W.H.
Journal Article
2017Spectrally resolved nonlinearity and temperature dependence of perovskite solar cells
Mundus, M.; Venkataramanachar, B.; Gehlhaar, R.; Kohlstädt, M.; Niesen, B.; Qiu, W.; Herterich, J.P.; Sahli, F.; Bräuninger, M.; Werner, J.; Hohl-Ebinger, J.; Uytterhoeven, G.; Würfel, U.; Ballif, C.; Schubert, M.C.; Warta, W.; Glunz, S.W.
Journal Article
2017Temperature-dependent modeling of silicon solar cells - Eg, ni, recombination, and VOC
Steinkemper, H.; Geisemeyer, I.; Schubert, M.C.; Warta, W.; Glunz, S.W.
Journal Article
2016Contact fault characterisation of complex silicon solar cells: A guideline based on current voltage characteristics and luminescence imaging
Padilla, M.; Reichel, C.; Hagedorn, N.; Fell, A.; Keding, R.; Michl, B.; Kasemann, M.; Warta, W.; Schubert, M.C.
Journal Article
2016Experimental proof of the slow light-induced degradation component in compensated n-type silicon
Niewelt, T.; Schön, J.; Broisch, J.; Rein, S.; Haunschild, J.; Warta, W.; Schubert, M.C.
Conference Paper
2016Hybrid Silicon Solar Cells with Advanced Layer Systems Including Perovskite
Mundt, L.; Michl, B.; Mastroianni, S.; Schubert, M.C.; Warta, W.; Glunz, S.W.; Lee, S.-W.
Presentation
2016Material limits of silicon from state-of-the-art photoluminescence imaging techniques
Schindler, F.; Giesecke, J.; Michl, B.; Schön, J.; Krenckel, P.; Riepe, S.; Warta, W.; Schubert, M.C.
Conference Paper
2016On the benefits of counting single photoluminescence photons for the investigation of low injection lifetime and traps in silicon
Heinz, F.D.; Warta, W.; Schubert, M.C.
Journal Article, Conference Paper
2016Reply to 'Tandem organic solar cells revisited'
Timmreck, R.; Meyer, T.; Gilot, J.; Seifert, H.; Mueller, T.; Furlan, A.; Wienk, M.M.; Wynands, D.; Hohl-Ebinger, J.; Warta, W.; Janssen, R.A.J.; Riede, M.; Leo, K.
Journal Article
2016Solar cell efficiency tables (version 47)
Green, M.A.; Emery, K.; Hishikawa, Y.; Warta, W.; Dunlop, E.D.
Journal Article
2016Solar cell efficiency tables (version 48)
Green, M.A.; Emery, K.; Hishikawa, Y.; Warta, W.; Dunlop, E.D.
Journal Article
2016Spatially resolved analysis of light induced degradation of multicrystalline PERC solar cells
Selinger, M.; Kwapil, W.; Schindler, F.; Krauß, K.; Fertig, F.; Michl, B.; Warta, W.; Schubert, M.C.
Journal Article, Conference Paper
2016A unified parameterization of the formation of boron oxygen defects and their electrical activity
Niewelt, T.; Schön, J.; Broisch, J.; Mägdefessel, S.; Warta, W.; Schubert, M.C.
Journal Article, Conference Paper
2015Carrier recombination at metallic precipitates in p- and n-type silicon
Kwapil, W.; Schön, J.; Warta, W.; Schubert, M.C.
Journal Article
2015Characterization and modelling of the boron-oxygen defect activation in compensated n-type silicon
Schön, J.; Niewelt, T.; Broisch, J.; Warta, W.; Schubert, M.C.
Journal Article
2015Characterization of tandem organic solar cells
Timmreck, R.; Meyer, T.; Gilot, J.; Seifert, H.; Müller, T.; Furlan, A.; Wienk, M.M.; Wynands, D.; Hohl-Ebinger, J.; Warta, W.; Janssen, R.A.J.; Riede, M.; Leo, K.
Journal Article
2015A combined transient and steady state approach for robust lifetime spectroscopy with micrometer resolution
Heinz, F.D.; Mundt, L.E.; Warta, W.; Schubert, M.C.
Journal Article
2015Efficiency Potential of p- and n-Type High Performance Multicrystalline Silicon
Schindler, F.; Michl, B.; Krenckel, P.; Riepe, S.; Feldmann, F.; Benick, J.; Warta, W.; Schubert, M.C.
Conference Paper, Journal Article
2015Electrical characterization of the slow boron oxygen defect component in Czochralski silicon
Niewelt, T.; Schön, J.; Broisch, J.; Warta, W.; Schubert, M.C.
Journal Article
2015Harmonically modulated luminescence: Bridging gaps in carrier lifetime metrology across the PV processing chain
Giesecke, J.; Schubert, M.C.; Schindler, F.; Warta, W.
Journal Article
2015High efficiency multicrystalline silicon solar cells: Potential of n-type doping
Schindler, F.; Schön, J.; Michl, B.; Riepe, S.; Krenckel, P.; Benick, J.; Feldmann, F.; Hermle, M.; Glunz, S.W.; Warta, W.; Schubert, M.C.
Journal Article
2015Identification of the most relevant metal impurities in mc n-type silicon for solar cells
Schön, J.; Schindler, F.; Kwapil, W.; Knörlein, M.; Krenckel, P.; Riepe, S.; Warta, W.; Schubert, M.C.
Journal Article, Conference Paper
2015Interaction of ultrashort laser pulses and silicon solar cells under short circuit conditions
Mundus, M.; Giesecke, J.A.; Fischer, P.; Hohl-Ebinger, J.; Warta, W.
Journal Article
2015Iron related solar cell instability: Imaging analysis and impact on cell performance
Schubert, M.C.; Padilla, M.; Michl, B.; Mundt, L.; Giesecke, J.; Hohl-Ebinger, J.; Benick, J.; Warta, W.; Tajima, M.; Ogura, A.
Journal Article
2015Light-Induced Degradation and Regeneration in n-Type Silicon
Niewelt, T.; Broisch, J.; Schön, J.; Haunschild, J.; Rein, S.; Warta, W.; Schubert, M.C.
Conference Paper, Journal Article
2015Local Series Resistance Imaging of Silicon Solar Cells with Complex Current Paths
Padilla, M.; Michl, B.; Hagedorn, N.; Reichel, C.; Kluska, S.; Fell, A.; Kasemann, M.; Warta, W.; Schubert, M.C.
Journal Article
2015Microscopic charge carrier lifetime in silicon from a transient approach
Heinz, F.D.; Kasemann, M.; Warta, W.; Schubert, M.C.
Journal Article
2015On the implication of spatial carrier density non-uniformity on lifetime determination in silicon
Heinz, F.D.; Giesecke, J.; Mundt, L.E.; Kasemann, M.; Warta, W.; Schubert, M.C.
Journal Article
2015Potential gain in multicrystalline silicon solar cell efficiency by n-Type doping
Schindler, F.; Michl, B.; Kleiber, A.; Steinkemper, H.; Schön, J.; Kwapil, W.; Krenckel, P.; Riepe, S.; Warta, W.; Schubert, M.C.
Journal Article
2015Preciptitate-Related Injection-Dependent Carrier Lifetime in n- and p-Type Silicon
Kwapil, W.; Schön, J.; Warta, W.; Schubert, M.C.
Conference Paper, Journal Article
2015Quantum efficiency measurement of concentrator photovoltaic modules
Mundus, M.; Rapp, C.; Missbach, T.; Siefer, G.; Hohl-Ebinger, J.; Bett, A.W.; Warta, W.
Conference Paper
2015Solar cell efficiency tables (Version 45)
Green, M.A.; Emery, K.; Hishikawa, Y.; Warta, W.; Dunlop, E.D.
Journal Article
2015Solar cell efficiency tables (version 46)
Green, M.A.; Emery, K.; Hishikawa, Y.; Warta, W.; Dunlop, E.D.
Journal Article
2015Spatially resolved impurity identification via temperature- and injection-dependent photoluminescence imaging
Mundt, L.; Schubert, M.C.; Schön, J.; Michl, B.; Niewelt, T.; Schindler, F.; Warta, W.
Journal Article
2015Spectrally shaped supercontinuum for advanced solar cell characterization
Mundus, M.; Kumar Dasa, M.; Wang, X.; Hohl-Ebinger, J.; Warta, W.
Conference Paper
2014Abschätzung winkelabhängiger Modenkopplung und Dämpfung in optischen Stufen-Index-Fasern anhand von Impulsantworten
Mundus, M.; Hohl-Ebinger, J.; Warta, W.
Conference Paper
2014Advanced spectral response measurement with wide range tunable laser system
Mundus, M.; Lill, D.; Hohl-Ebinger, J.; Warta, W.
Conference Paper
2014Analysis of solar cell cross sections with micro-light beam induced current (µLBIC)
Breitwieser, M.; Heinz, F.; Büchler, A.; Kasemann, M.; Schön, J.; Warta, W.; Schubert, M.C.
Journal Article, Conference Paper
2014Challenges for photovoltaic silicon materials
Coletti, G.; Gordon, I.; Schubert, M.C.; Warta, W.; Ovrelid, E.J.; Jouini, A.; Tucci, M.; Cesare, G. de
Journal Article
2014Characterizing local contact resistances of interdigitated back contact silicon solar cells
Padilla, M.; Michl, B.; Reichel, C.; Hagedorn, N.; Kluska, S.; Haag, S.; Keding, R.; Fell, A.; Kasemann, M.; Warta, W.; Schubert, M.C.
Conference Paper
2014Contacting bare silicon solar cells with advanced cell metallisation
Geisemeyer, I.; Kallies, C.; Hohl-Ebinger, J.; Warta, W.
Conference Paper
2014Determination of the minority carrier lifetime in crystalline silicon thin-film material
Walter, D.; Rosenits, P.; Berger, B.; Reber, S.; Warta, W.
Journal Article
2014Efficiency-limiting recombination in multicrystalline silicon solar cells
Schubert, M.C.; Schön, J.; Abdollahinia, A.; Michl, B.; Kwapil, W.; Schindler, F.; Heinz, F.; Padilla, M.; Giesecke, J.; Breitwieser, M.; Riepe, S.; Warta, W.
Conference Paper
2014Fast hot spot evaluation
Geisemeyer, I.; Fertig, F.; Warta, W.; Rein, S.; Schubert, M.
Conference Paper
2014Imaging techniques for quantitative silicon material and solar cell analysis
Michl, B.; Padilla, M.; Geisemeyer, I.; Haag, S.T.; Schindler, F.; Schubert, M.C.; Warta, W.
Journal Article
2014Impact of iron precipitates on carrier lifetime in as-grown and phosphorus-gettered multicrystalline silicon wafers in model and experiment
Kwapil, W.; Schön, J.; Schindler, F.; Warta, W.; Schubert, M.
Journal Article
2014Interstitial oxygen imaging from thermal donor growth - a fast photoluminescence based method
Niewelt, T.; Lim, S.; Holtkamp, J.; Schön, J.; Warta, W.; Macdonald D.; Schubert, M.C.
Journal Article, Conference Paper
2014Main defect reactions behind phosphorus diffusion gettering of iron
Schön, J.; Vähänissi, V.; Haarahiltunen, A.; Schubert, M.C.; Warta, W.; Savin, H.
Journal Article
2014Microscopic origin of the aluminium assisted spiking effects in n-type silicon solar cells
Heinz, F.D.; Breitwieser, M.; Gundel, P.; König, M.; Hörteis, M.; Warta, W.; Schubert, M.C.
Journal Article, Conference Paper
2014The potential of multicrystalline n-type silicon for high efficiency solar cells
Schindler, F.; Michl, B.; Kleiber, A.; Steinkemper, H.; Schön, J.; Kwapil, W.; Krenckel, P.; Riepe, S.; Warta, W.; Schubert, M.C.
Conference Paper
2014Prediction of silicon PV module temperature for hot spots and worst case partial shading situations using spatially resolved lock-in thermography
Geisemeyer, I.; Fertig, F.; Warta, W.; Rein, S.; Schubert, M.C.
Journal Article
2014Process control and defect analysis for crystalline silicon thin films for photovoltaic applications by the means of electrical and spectroscopic microcharacterization tools
Breitwieser, M.; Heinz, F.; Rachow, T.; Kasemann, M.; Janz, S.; Warta, W.; Schubert, M.C.
Journal Article
2014Short-circuit current density mapping for solar cells
Padilla, M.; Michl, B.; Thaidigsmann, B.; Warta, W.; Schubert, M.C.
Journal Article
2014Solar cell efficiency losses due to impurities from the crucible in multicrystalline silicon
Schindler, F.; Michl, B.; Schön, J.; Kwapil, W.; Warta, W.; Schubert, M.
Journal Article
2014Solar cell efficiency tables (version 43)
Green, M.A.; Emery, K.; Hishikawa, Y.; Warta, W.; Dunlop, E.D.
Journal Article
2014Solar cell efficiency tables (version 44)
Green, M.A.; Emery, K.; Hishikawa, Y.; Warta, W.; Dunlop, E.D.
Journal Article
2014Strategic Vision on PV Research Infrastructure in Europe
Kroon, J.; Bruijne, M. de; Bennett, I.; Arrowsmith, G.; Malbranche, P.; Merten, J.; Assoa, Y.B.; Taylor, N.; Georgyvan, S.; Lauermann, I.; Hüpkes, J.; Siefer, G.; Köhl, M.; Warta, W.; Roca, F.; Theologitis, I.
Conference Paper
2014Suns-PLI as a powerful tool for spatially resolved fill factor analysis of solar cells
Michl, B.; Impera, D.; Bivour, M.; Warta, W.; Schubert, M.C.
Journal Article
2014Surface recombination parameters of interdigitated-back-contact silicon solar cells obtained by modeling luminescence images
Padilla, M.; Höffler, H.; Reichel, C.; Chu, H.; Greulich, J.; Rein, S.; Warta, W.; Hermle, M.; Schubert, M.C.
Journal Article
2014Towards a unified low-field model for carrier mobilities in crystalline silicon
Schindler, F.; Forster, M.; Broisch, J.; Schön, J.; Giesecke, J.; Rein, S.; Warta, W.; Schubert, M.C.
Journal Article
2014Understanding carrier lifetime measurements at nonuniform recombination
Giesecke, J.A.; Warta, W.
Journal Article
2014Verfahren und Vorrichtung zur Bestimmung von Materialparametern, insbesondere der Ladungsträgerlebensdauer eines Halbleitersubstrates durch Messung von Lumineszenzstrahlung
Giesecke, Johannes; Schubert, Martin; Warta, Wilhelm
Patent
2014Verfahren zur Bestimmung der tatsächlichen Ladungsträger-Lebensdauer eines Halbleitersubstrates aus einer dynamischen und differentiellen Messung der Relaxationszeit freier Ladungsträger
Giesecke, Johannes; Warta, Wilhelm; Glunz, Stefan
Patent
2013Accurate determination of minority carrier mobility in silicon from quasi-steady-state photoluminescence
Giesecke, J.; Schindler, F.; Bühler, M.; Schubert, M.; Warta, W.
Journal Article
2013Analyses of the evolution of iron-silicide precipitates in multicrystalline silicon during solar cell processing
Schön, J.; Haarahiltunen, A.; Savin, H.; Fenning, D.P.; Buonassisi, T.; Warta, W.; Schubert, M.
Journal Article
2013Aspects of surface conditioning for high-efficient hetero-junction silicon solar cells
Breitenstein, L.; Ritzau, K.U.; Hermle, M.; Warta, W.
Conference Paper, Journal Article
2013Carrier lifetime from dynamic electroluminescence
Giesecke, J.A.; Schubert, M.C.; Warta, W.
Journal Article
2013Chromium distribution in multicrystalline silicon: Comparison of simulations and experiments
Schön, J.; Habenicht, H.; Warta, W.; Schubert, M.C.
Journal Article
2013Determination of actual carrier lifetime from differential measurements
Giesecke, J.A.; Glunz, S.W.; Warta, W.
Journal Article, Conference Paper
2013Determination of bulk lifetime and surface recombination velocity of silicon ingots from dynamic photoluminescence
Giesecke, J.A.; Sinton, R.A.; Schubert, M.C.; Riepe, S.; Warta, W.
Journal Article
2013Doping density in silicon and solar cells analyzed with micrometer resolution
Heinz, F.D.; Gundel, P.; Warta, W.; Schubert, M.C.
Journal Article
2013Estimation of angle-dependent mode coupling and attenuation in step-index plastic optical fibers from impulse responses
Mundus, M.; Hohl-Ebinger, J.; Warta, W.
Journal Article
2013The impact of different diffusion temperature profiles on iron concentrations and carrier lifetimes in multicrystalline silicon wafers
Michl, B.; Schön, J.; Warta, W.; Schubert, M.C.
Journal Article
2013Impact of impurities from crucible and coating on mc-silicon quality - the example of iron and cobalt
Schubert, M.C.; Schön, J.; Schindler, F.; Kwapil, W.; Abdollahinia, A.; Michl, B.; Riepe, S.; Schmid, C.; Schumann, M.; Meyer, S.; Warta, W.
Journal Article
2013Impact on iron surface contamination on the lifetime degradation of samples passivated by fired AL2O3/SiNx
Breitenstein, L.; Schön, J.; Schubert, M.; Warta, W.
Journal Article
2013Influence of surface texture on the defect-induced breakdown behavior of multicrystalline silicon solar cells
Kwapil, W.; Nievendick, J.; Zuschlag, A.; Gundel, P.; Schubert, M.C.; Warta, W.
Journal Article
2013Interstitial chromium in silicon on the micron scale
Heinz, F.D.; Schindler, F.; Warta, W.; Schubert, M.C.
Journal Article, Conference Paper
2013Material limitations due to crucible impurities in multicrystalline silicon for high efficiency solar cells
Schindler, F.; Michl, B.; Schön, J.; Kwapil, W.; Warta, W.; Schubert, M.C.
Conference Paper
2013Predictive simulation of doping processes for silicon solar cells
Schön, J.; Abdollahinia, A.; Müller, R.; Benick, J.; Hermle, M.; Warta, W.; Schubert, M.C.
Journal Article, Conference Paper
2013Solar cell efficiency tables (version 41)
Green, M.A.; Emery, K.; Hishikawa, Y.; Warta, W.; Dunlop, E.D.
Journal Article
2013Solar cell efficiency tables (version 42)
Green, M.A.; Emery, K.; Hishikawa, Y.; Warta, W.; Dunlop, E.D.
Journal Article
2013Understanding and resolving the discrepancy between differential and actual minority carrier lifetime
Giesecke, J.A.; Glunz, S.W.; Warta, W.
Journal Article
2013Wafer thickness optimization for silicon solar cells of heterogeneous material quality
Michl, B.; Kasemann, M.; Warta, W.; Schubert, M.C.
Journal Article
2012Broad Range Injection-Dependent Minority Carrier Lifetime from Photoluminescence
Giesecke, J.; Niewelt, T.; Rüdiger, M.; Rauer, M.; Schubert, M.; Warta, W.
Journal Article
2012Comments on the paper "Detection and analysis of hot-spot formation in solar cells" published by M. Simon and E.L. Meyer in Solar Energy Materials & Solar Cells 94 (2010) 106113
Bauer, J.; Kwapil, W.; Lausch, D.; Schubert, M.C.; Warta, W.; Bothe, K.; Breitenstein, O.
Journal Article
2012Contactless qualitative series resistance imaging on solar cells
Kasemann, M.; Reindl, L.M.; Michl, B.; Warta, W.; Schütt, A.; Carstensen, J.
Journal Article
2012Efficiency limiting bulk recombination in multicrystalline silicon solar cells
Michl, B.; Rüdiger, M.; Giesecke, J.A.; Hermle, M.; Warta, W.; Schubert, M.C.
Journal Article
2012Impact of reverse breakdown in shaded silicon solar cells on module level: Simulation and experiment
Geisemeyer, I.; Fertig, F.; Warta, W.; Rein, S.; Schubert, M.C.
Conference Paper
2012Measurement of net dopant concentration via dynamic photoluminescence
Giesecke, J.A.; Schubert, M.C.; Warta, W.
Journal Article
2012Microsecond carrier lifetime measurements in silicon via quasi-steady-state photoluminescence
Giesecke, J.A.; Warta, W.
Journal Article
2012Modeling distribution and impact of efficiency limiting metallic impurities in silicon solar cells
Schubert, M.C.; Schön, J.; Michl, B.; Abdollahinia, A.; Warta, W.
Conference Paper
2012Modeling majority carrier mobility in compensated crystalline silicon for solar cells
Schindler, F.; Schubert, M.C.; Kimmerle, A.; Broisch, J.; Rein, S.; Kwapil, W.; Warta, W.
Journal Article, Conference Paper
2012Modeling the size distribution of iron silicide precipitates in multicrystalline silicon
Schön, J.; Haarahiltunen, A.; Fenning, D.P.; Buonassisi, T.; Savin, H.; Warta, W.; Schubert, M.C.
Conference Paper
2012Optimizing micro raman and PL spectroscopy for solar cell technological assessment
Heinz, F.D.; Warta, W.; Schubert, M.C.
Journal Article, Conference Paper
2012Self-sufficient minority carrier lifetime in silicon from quasi-steady-state photoluminescence
Giesecke, J.A.; Schubert, M.C.; Warta, W.
Journal Article
2012Separation of front and backside surface recombination by photoluminescence imaging on both wafer sides
Michl, B.; Giesecke, J.A.; Warta, W.; Schubert, M.C.
Journal Article
2012Simple wet-chemical cleanings for high-efficiency silicon solar cell applications
Breitenstein, L.; Sevenig, F.; Pysch, D.; Gottschalk, C.; Hermle, M.; Warta, W.
Conference Paper
2012Solar cell efficiency tables (version 39)
Green, M.A.; Emery, K.; Hishikawa, Y.; Warta, W.; Dunlop, E.D.
Journal Article
2012Solar cell efficiency tables (version 40)
Green, M.A.; Emery, K.; Hishikawa, Y.; Warta, W.; Dunlop, E.D.
Journal Article
2011All-contactless measurement of series resistance distributions on solar cells with photoluminescence imaging
Kasemann, M.; Reindl, L.M.; Michl, B.; Warta, W.; Schütt, A.; Carstensen, J.
Conference Paper
2011Can luminescence imaging replace lock-in thermography on solar cells?
Breitenstein, O.; Warta, W.; Schubert, M.C.; Kwapil, W.; Müller, J.; Hinken, D.; Bothe, K.; Bauer, J.
Journal Article
2011Characterization and optimization of indium tin oxide films for heterojunction solar cells
Balestrieri, M.; Pysch, D.; Becker, J.-P.; Hermle, M.; Warta, W.; Glunz, S.W.
Journal Article
2011Comprehensive characterization of advanced cell concepts with sub-micron resolution
Gundel, P.; Drießen, M.; Bartsch, J.; Jäger, U.; Suwito, D.; Heinz, F.D.; Warta, W.; Schubert, M.C.
Conference Paper, Journal Article
2011Comprehensive microscopic analysis of laser-induced high doping regions in silicon
Gundel, P.; Suwito, D.; Jäger, U.; Heinz, F.D.; Warta, W.; Schubert, M.C.
Journal Article
2011Evaluating the aluminum-alloyed p+-layer of silicon solar cells by emitter saturation current density and optical microspectroscopy measurements
Woehl, R.; Gundel, P.; Krause, J.; Rühle, K.; Heinz, F.D.; Rauer, M.; Schmiga, C.; Schubert, M.C.; Warta, W.; Biro, D.
Journal Article
2011From Injection Dependent Lifetime to Solar Cell Efficiency
Michl, B.; Rüdiger, M.; Giesecke, J.A.; Hermle, M.; Warta, W.; Schubert, M.C.
Conference Paper
2011Hall mobility in multicrystalline silicon
Schindler, F.; Geilker, J.; Kwapil, W.; Warta, W.; Schubert, M.C.
Journal Article
2011Imaging of metastable defects in silicon
Schubert, M.C.; Habenicht, H.; Warta, W.
Journal Article
2011Impact of Junction Breakdown in Multi-Crystalline Silicon Solar Cells on Hot Spot Formation and Module Performance
Fertig, F.; Rein, S.; Schubert, M.; Warta, W.
Conference Paper
2011Impact of metal contamination in silicon solar cells
Coletti, G.; Bronsveld, P.C.P.; Hahn, G.; Warta, W.; Macdonald, D.; Ceccaroli, B.; Wambach, K.; Quan, N. le; Fernandez, J.M.
Journal Article
2011Impact of wet-chemical cleaning on the passivation quality of Al 2O 3 layers
Breitenstein, L.; Richter, A.; Hermle, M.; Warta, W.
Conference Paper
2011Micro-spectroscopy on silicon wafers and solar cells
Gundel, P.; Schubert, M.C.; Heinz, F.D.; Woehl, R.; Benick, J.; Giesecke, J.A.; Suwito, D.; Warta, W.
Journal Article
2011Minority carrier lifetime imaging of silicon wafers calibrated by quasi-steady-state photoluminescence
Giesecke, J.A.; Schubert, M.C.; Michl, B.; Schindler, F.; Warta, W.
Journal Article
2011Minority carrier lifetime of silicon solar cells from quasi-steady-state photoluminescence
Giesecke, J.A.; Michl, B.; Schindler, F.; Schubert, M.C.; Warta, W.
Journal Article
2011Solar cell efficiency tables (version 37)
Green, M.A.; Emery, K.; Hishikawa, Y.; Warta, W.
Journal Article
2011Solar cell efficiency tables (Version 38)
Green, M.A.; Emery, K.; Hishikawa, Y.; Warta, W.; Dunlop, E.D.
Journal Article
2011Spatially resolved carrier lifetime calibrated via quasi-steady-state photoluminescence
Giesecke, J.A.; Michl, B.; Schindler, F.; Schubert, M.C.; Warta, W.
Conference Paper, Journal Article
2011Spectral Influences on Measurement Uncertainty of a-Si/µc-Si Multi-Junction Solar Devices
Seifert, H.; Hohl-Ebinger, J.; Warta, W.
Conference Paper
2011Studies on Wet-Chemical Surface Conditioning for Al2o3 Passivation Layers Deposited with ALD
Breitenstein, L.; Richter, A.; Hermle, M.; Warta, W.
Conference Paper
2011Uncertainty of the spectral mismatch correction factor in STC measurements on photovoltaic devices
Hohl-Ebinger, J.; Warta, W.
Journal Article
2011Understanding junction breakdown in multicrystalline solar cells
Breitenstein, O.; Bauer, J.; Bothe, K.; Kwapil, W.; Lausch, D.; Rau, U.; Schmidt, J.; Schneemann, M.; Schubert, M.C.; Wagner, J.-M.; Warta, W.
Journal Article
2011Understanding the distribution of iron in multicrystalline silicon after emitter formation
Schön, J.; Habenicht, H.; Schubert, M.C.; Warta, W.
Journal Article
20102D modeling of the iron concentration from crystallization to final firing of mc silicon solar cells
Schön, J.; Schubert, M.C.; Habenicht, H.; Warta, W.
Conference Paper
2010Accurate IV-measurement for back contact solar cells
Glatthaar, M.; Hohl-Ebinger, J.; Krieg, A.; Greif, M.; Greco, L.; Clement, F.; Rein, S.; Warta, W.; Preu, R.
Conference Paper
2010Analysis of performance limiting material properties of multicrystalline silicon
Schubert, M.C.; Kwapil, W.; Schön, J.; Habenicht, H.; Kasemann, M.; Gundel, P.; Blazek, M.; Warta, W.
Journal Article, Conference Paper
2010Analysis of simultaneous boron and phosphorus diffusion gettering in silicon
Schön, J.; Schubert, M.C.; Warta, W.; Savin, H.; Haarahiltunen, A.
Journal Article
2010Approach to the physical origin of breakdown in silicon solar cells by optical spectroscopy
Gundel, P.; Kwapil, W.; Schubert, M.C.; Seifert, H.; Warta, W.
Journal Article
2010Bifacial solar cells in STC measurement
Hohl-Ebinger, J.; Warta, W.
Conference Paper
2010Cause of increased currents under reverse-bias conditions of upgraded metallurgical grade multicrystalline silicon solar cells
Kwapil, W.; Wagner, M.; Schubert, M.C.; Warta, W.
Conference Paper
2010Conductivity mobility and hall mobility in compensated multicrystalline silicon
Schindler, F.; Geilker, J.; Kwapil, W.; Giesecke, J.; Schubert, M.C.; Warta, W.
Conference Paper
2010Defect-induced breakdown in multicrystalline silicon solar cells
Breitenstein, O.; Bauer, J.; Wagner, J.-M.; Zakharov, N.; Blumtritt, H.; Lotnyk, A.; Kasemann, M.; Kwapil, W.; Warta, W.
Journal Article
2010Determining the minority carrier lifetime in crystalline silicon thin-film material
Rosenits, P.; Kopp, F.; Walter, D.; Reber, S.; Warta, W.
Conference Paper
2010Determining the minority carrier lifetime in epitaxial silicon layers by micro-wave-detected photoconductivity measurements
Walter, D.; Rosenits, P.; Kopp, F.; Reber, S.; Berger, B.; Warta, W.
Conference Paper
2010Evaluating luminescence based voltage images of silicon solar cells
Glatthaar, M.; Haunschild, J.; Zeidler, R.; Demant, M.; Greulich, J.; Michl, B.; Warta, W.; Rein, S.; Preu, R.
Journal Article
2010High net doping concentration responsible for critical diode breakdown behavior of upgraded metallurgical grade multicrystalline silicon solar cells
Kwapil, W.; Wagner, M.; Schubert, M.C.; Warta, W.
Journal Article
2010Imaging of chromium point defects in p-type silicon
Habenicht, H.; Schubert, M.C.; Warta, W.
Journal Article
2010Imaging of metal impurities in silicon by luminescence spectroscopy and synchrotron techniques
Schubert, M.C.; Schön, J.; Gundel, P.; Habenicht, H.; Kwapil, W.; Warta, W.
Journal Article, Conference Paper
2010Impact of stress on recombination of metal precipitates in silicon
Gundel, P.; Schubert, M.C.; Heinz, F.D.; Kwapil, W.; Warta, W.; Martinez-Criado, G.; Reiche, M.; Weber, E.R.
Journal Article
2010Influence of different excitation spectra on the measured carrier lifetimes in quasi-steady-state photoconductance measurements
Rosenits, P.; Roth, T.; Warta, W.; Glunz, S.W.
Journal Article
2010Mapping the quantitative carrier lifetime and doping concentration with micro resolution
Heinz, F.D.; Gundel, P.; Schubert, M.C.; Warta, W.
Conference Paper
2010Minority carrier lifetime in silicon wafers from quasi-steady-state photoluminescence
Giesecke, J.A.; Schubert, M.C.; Walter, D.; Warta, W.
Journal Article
2010Photoluminescence imaging of chromium in crystalline silicon
Habenicht, H.; Schubert, M.C.; Coletti, G.; Warta, W.
Conference Paper
2010Quantitative carrier lifetime measurement with micron resolution
Gundel, P.; Heinz, F.D.; Schubert, M.C.; Giesecke, J.A.; Warta, W.
Journal Article
2010Quantitative description of dark current-voltage characteristics of multicrystalline silicon solar cells based on lock-in thermography measurements
Breitenstein, O.; Khanna, A.; Warta, W.
Journal Article
2010Quantitative iron concentrating imaging
Schubert, M.C.; Habenicht, H.; Kerler, M.J.; Warta, W.
Conference Paper
2010Recombination activity enhancement by stress in silicon
Gundel, P.; Schubert, M.C.; Heinz, F.D.; Warta, W.
Conference Paper
2010The role of material quality in EWT and standard solar cells on multicrystalline standard and UMG silicon material
Schubert, M.C.; Rüdiger, M.; Michl, B.; Schindler, F.; Kwapil, W.; Giesecke, J.; Hermle, M.; Warta, W.; Ferré, R.; Wade, R.; Petter, K.
Conference Paper
2010Separation of local bulk and surface recombination in crystalline silicon from luminescence reabsorption
Giesecke, J.A.; Kasemann, M.; Schubert, M.C.; Würfel, P.; Warta, W.
Journal Article
2010Simulation of iron distribution after crystallization of mc silicon
Schön, J.; Habenicht, H.; Schubert, M.C.; Warta, W.
Conference Paper
2010Simultaneous determination of carrier lifetime and net dopant concentration of silicon wafers from photoluminescence
Giesecke, J.A.; Walter, D.; Kopp, F.; Rosenits, P.; Schubert, M.C.; Warta, W.
Conference Paper
2010Simultaneous stress and defect luminescence study on silicon
Gundel, P.; Schubert, M.C.; Warta, W.
Journal Article
2010Solar cell efficiency tables (version 35)
Green, M.A.; Emery, K.; Hishikawa, Y.; Warta, W.
Journal Article
2010Solar cell efficiency tables (version 36)
Green, M.A.; Emery, K.; Hishikawa, Y.; Warta, W.
Journal Article
2010Spatially resolved determination of dark saturation current and series resistance of silicon solar cells
Glatthaar, M.; Haunschild, J.; Kasemann, M.; Giesecke, J.; Warta, W.; Rein, S.
Journal Article
2010Spectrometric characterization of multi-junction organic solar cells
Seifert, H.; Hohl-Ebinger, J.; Uhrich, C.; Timmreck, R.; Riede, M.; Warta, W.
Conference Paper
2010Submicron resolution carrier lifetime analysis in silicon with Fano resonances
Gundel, P.; Schubert, M.C.; Heinz, F.D.; Benick, J.; Zizak, I.; Warta, W.
Journal Article
2009Analysis of performance limiting material properties of multicrystalline silicon
Warta, W.; Schubert, M. C.; Habenicht, H.; Kasemann, M.; Kwapil, W.; Gundel, P.; Schön, J.
Conference Paper
2009Determination of local minority carrier diffusion lengths in crystalline silicon from luminescence images
Giesecke, J.A.; Kasemann, M.; Warta, W.
Journal Article
2009Determining the excess carrier lifetime in crystalline silicon thin-films by photoluminescence measurements
Rosenits, P.; Roth, T.; Warta, W.; Reber, S.; Glunz, S.W.
Journal Article
2009Determining the junction temperature for STC measurements of thin film solar cells
Seifert, H.; Hohl-Ebinger, J.; Würfel, U.; Zimmermann, B.; Warta, W.
Conference Paper
2009Diode breakdown related to recombination active defects in block-cast multicrystalline silicon solar cells
Kwapil, W.; Kasemann, M.; Gundel, P.; Schubert, M.C.; Warta, W.; Bronsveld, P.; Coletti, G.
Journal Article
2009Gettering variation and lifetime characterization on intentionally iron, nickel and chromium contaminated multicrystalline silicon wafers
Blazek, M.; Kwapil, W.; Schön, J.; Warta, W.; Coletti, G.
Conference Paper
2009Illumination-induced errors associated with suns-VOC measurements of silicon solar cells
Roth, T.; Hohl-Ebinger, J.; Grote, D.; Schmich, E.; Warta, W.; Glunz, S.W.; Sinton, R.A.
Journal Article
2009Impact of iron, nickel and chromium in feedstock on multicrystalline silicon solar cell properties
Coletti, G.; Bronsveld, P.C.P.; Knopf, C.; Swanson, C.C.; Kvande, R.; Arnberg, L.; Habenicht, H.; Warta, W.
Conference Paper
2009Impact of SiNx:H and Al2O3 surface passivation on interstitial iron concentration and carrier lifetime in mc-silicon wafers
Habenicht, H.; Schubert, M.C.; Richter, A.; Warta, W.
Conference Paper
2009Impact of transition metals in feedstock on multicrystalline silicon solar cell properties
Coletti, G.; Bronsveld, P.; Kvande, R.; Geerligs, L.J.; Arnberg, L.; Habenicht, H.; Warta, W.; Knopf, C.
Conference Paper
2009Influence of depth dependent profiles on carrier density measurements
Schubert, M.C.; Kerler, M.J.; Warta, W.
Conference Paper
2009Influence of heterogeneous profiles in carrier density measurements with respect to iron concentration measurements in silicon
Schubert, M.C.; Kerler, M.J.; Warta, W.
Journal Article
2009Lifetime studies on crystalline silicon thin-film material by photoluminescence imaging
Kopp, F.; Rosenits, P.; Roth, T.; Schmich, E.; Reber, S.; Warta, W.
Conference Paper
2009Micro-luminescence spectroscopy on multicrystalline silicon
Gundel, P.; Schubert, M.C.; Kwapil, W.; Schön, J.; Reiche, M.; Savin, H.; Yli-Koski, M.; Sans, J.A.; Martinez-Criado, G.; Warta, W.; Weber, E.R.
Conference Paper
2009Micro-photoluminescence spectroscopy on metal precipitates in silicon
Gundel, P.; Schubert, M.C.; Kwapil, W.; Schon, J.; Reiche, M.; Savin, H.; Yli-Koski, M.; Sans, J.A.; Martinez-Criado, G.; Seifert, W.; Warta, W.; Weber, E.R.
Journal Article
2009Observation of metal precipitates at prebreakdown sites in multicrystalline silicon solar cells
Kwapil, W.; Gundel, P.; Schubert, M.C.; Heinz, F.D.; Warta, W.; Weber, E.R.; Goetzberger, A.; Martinez-Criado, G.
Journal Article
2009Photoconductance-based excess carrier lifetime measurements on unpassivated silicon samples
Roth, T.; Rosenits, P.; Warta, W.; Glunz, S.W.
Conference Paper
2009Physical mechanisms of breakdown in multicrystalline silicon solar cells
Kwapil, W.; Kasemann, M.; Gundel, P.; Schubert, M.C.; Warta, W.; Breitenstein, O.; Bauer, J.; Lotnyk, A.; Wagner, J.-M.; Bronsveld, P.C.P.; Coletti, G.
Conference Paper
2009Physical mechanisms of breakdown in multicrystalline silicon solar cells
Breitenstein, O.; Bauer, J.; Wagner, J.-M.; Blumtritt, H.; Lotnyk, A.; Kasemann, M.; Kwapil, W.; Warta, W.
Conference Paper
2009Precise measurement of solar cell performance in production
Warta, W.; Hohl-Ebinger, J.; Ohm, A.; Kordelos, K.; Winter, S.; Adelhelm, R.; Berger, D.; Hartmann, H.-P.; Neuhaus, D.-H.; Wald, M.; Kieliba, T.; Albert, H.; Hund, B.; Isenberg, J.; Nagel, H.; Grabitz, P.; Lattwein, W.; Fölsch, J.
Conference Paper
2009Quasi-steady-state photoconductance measurements on crystalline silicon thin-film material
Rosenits, P.; Kopp, F.; Roth, T.; Warta, W.; Reber, S.; Glunz, S.W.
Conference Paper
2009Reliable hot-spot classification in 10 ms using ultra-fast lock-in thermography
Kasemann, M.; Walter, B.; Warta, W.
Journal Article
2009Separation of recombination properties of silicon solar cells and wafers via luminescence imaging
Giesecke, J.A.; Kasemann, M.; Warta, W.
Conference Paper
2009Solar cell efficiency tables (version 33)
Green, M.A.; Emery, K.; Hishikawa, Y.; Warta, W.
Journal Article
2009Solar cell efficiency tables (version 34)
Green, M.A.; Emery, K.; Hishikawa, Y.; Warta, W.
Journal Article
2009Spatially resolved characterization of silicon as-cut wafers with photoluminescence imaging
Giesecke, J.A.; The, M.; Kasemann, M.; Warta, W.
Journal Article
2009Spatially resolved determination of the dark saturation current by electroluminescence imaging
Glatthaar, M.; Giesecke, J.; Kasemann, M.; Haunschild, J.; The, M.; Warta, W.; Rein, S.
Conference Paper
2009Spatially resolved determination of the dark saturation current of silicon solar cells from electroluminescence images
Glatthaar, M.; Giesecke, J.; Kasemann, M.; Haunschild, J.; The, M.; Warta, W.; Rein, S.
Journal Article
2009X-ray excited optical luminescence from crystalline silicon
Gundel, P.; Martinez-Criado, G.; Schubert, M.C.; Sans, J.A.; Kwapil, W.; Warta, W.; Weber, E.R.
Journal Article
2008Analysis of the physical origin of trap centres and their effect on solar cells
Gundel, P.; Schubert, M.; Allardt, M.; Warta, W.
Conference Paper
2008Analyzing the effects of laterally varying emitter sheet resistance in combination with contact resistance
Grote, D.; Hermle, M.; Wotke, E.; Belledin, U.; Hörteis, M.; Spitz, M.; Kasemann, M.; Rein, S.; Biro, D.; Warta, W.
Conference Paper
2008Application of luminescence imaging based series resistance measurement methods in an industrial environment
Michl, B.; Kasemann, M.; Giesecke, J.; Glatthaar, M.; Schütt, A.; Carstensen, J.; Föll, H.; Rein, S.; Warta, W.; Nagel, H.
Conference Paper
2008Comparison of photoconductance- and photoluminescence-based lifetime measurement techniques
Roth, T.; Rosenits, P.; Rüdiger, M.; Warta, W.; Glunz, S.W.
Conference Paper
2008Contacting bare solar cells for STC measurements
Hohl-Ebinger, J.; Grote, D.; Hund, B.; Mette, A.; Warta, W.
Conference Paper
2008Defect transformation in intentionally contaminated FZ silicon during low temperature annealing
Habenicht, H.; Gundel, P.; Mchedlidze, T.; Kittler, M.; Coletti, G.; Warta, W.
Conference Paper
2008Determination of minority carrier diffusion lengths in silicon solar cells from photoluminescence images
Giesecke, J.; Kasemann, M.; Schubert, M.C.; Michl, B.; The, M.; Warta, W.; Würfel, P.
Conference Paper
2008Electronic properties of titanium in boron-doped silicon analyzed by temperature-dependent photoluminescence and injection-dependent photoconductance lifetime spectroscopy
Roth, T.; Rüdiger, M.; Warta, W.; Glunz, S.W.
Journal Article
2008Emissivity-corrected power loss calibration for lock-in thermography measurements on silicon solar cells
Kasemann, M.; Walter, B.; Meinhardt, C.; Ebser, J.; Kwapil, W.; Warta, W.
Journal Article
2008Gettering efficiency of backside aluminium layer and Al-Si-Eutectic
Blazek, M.; Kwapil, W.; Schön, J.; Warta, W.
Conference Paper
2008Impact of iron and molybdenum in mono and multicrystalline float-zone silicon solar cells
Coletti, G.; Geerligs, L.J.; Manshanden, P.; Swanson, C.; Riepe, S.; Warta, W.; Arumughan, J.; Kopecek, R.
Conference Paper
2008Improving the accuracy of suns-VOC measurements using spectral mismatch correction
Roth, T.; Hohl-Ebinger, J.; Schmich, E.; Warta, W.; Glunz, S.W.; Sinton, R.A.
Conference Paper
2008Investigations on the pre-breakdown of multicrystalline silicon solar cells
Kwapil, W.; Kasemann, M.; Giesecke, J.; Michl, B.; Warta, W.
Conference Paper
2008IV measurements of mc-Si solar cells: Comparison of results from institute and industry partners within the EU crystalclear project
Hahn, G.; Herguth, A.; Helfricht, A.; Hofmann, M.; Warta, W.; Borg, N.J.C.M. van der; Weeber, A.W.; John, J.; Beaucarne, G.; Bagus, S.; Nagel, H.; Quang, N. le; Nichiporuk, O.; Vincueria, I.; Brochs, M.
Conference Paper
2008Lifetime studies on crystalline silicon thin-films by photoluminescence measurements
Rosenits, P.; Roth, T.; Reber, S.; Warta, W.; Glunz, S.W.
Conference Paper
2008Luminescence imaging for the detection of shunts on silicon solar cells
Kasemann, M.; Grote, D.; Walter, B.; Kwapil, W.; Trupke, T.; Augarten, Y.; Bardos, R.A.; Pink, E.; Abbott, M.D.; Warta, W.
Journal Article
2008Messverfahren für eine Halbleiterstruktur
Würfel, P.; Schubert, M.; Kasemann, M.; Warta, W.
Patent
2008Origin of trapping in multicrystalline silicon
Gundel, P.; Schubert, M.C.; Warta, W.
Journal Article
2008Progress in silicon solar cell characterization with infrared imaging methods
Kasemann, M.; Kwapil, W.; Walter, B.; Giesecke, J.; Michl, B.; The, M.; Wagner, J.-M.; Bauer, J.; Schütt, A.; Carstensen, J.; Kampwerth, H.; Gundel, P.; Schubert, M.C.; Bardos, R.A.; Föll, H.; Nagel, H.; Würfel, P.; Trupke, T.; Breitenstein, O.; Warta, W.; Glunz, S.W.
Conference Paper
2008Simulation of MWT-solar cells using a multi 2D circuit calculation tool based on spice
Kubera, T.; Clement, F.; Grote, D.; Thaidigsmann, B.; Biro, D.; Warta, W.; Preu, R.
Conference Paper
2008Simulation of phosphorus diffusion and iron gettering with sentaurus process
Schön, J.; Warta, W.
Conference Paper
2008Solar cell efficiency tables (version 31)
Green, M.A.; Emery, K.; Hishikawa, Y.; Warta, W.
Journal Article
2008Solar cell efficiency tables (version 32)
Green, M.A.; Emery, K.; Hishikawa, Y.; Warta, W.
Journal Article
2008Spatially resolved characterisation of silicon as-cut wafers with photoluminescence imaging
The, M.; Giesecke, J.; Kasemann, M.; Warta, W.
Conference Paper
2008Spatially resolved luminescence spectroscopy on multicrystalline silicon
Schubert, M.C.; Gundel, P.; The, M.; Warta, W.; Romero, M.J.; Ostapenko, S.; Arguirov, T.
Conference Paper
2008Spatially resolved silicon solar cell characterization using infrared imaging methods
Kasemann, M.; Kwapil, M.; Schubert, M.C.; Habenicht, H.; Walter, B.; The, M.; Kontermann, S.; Rein, S.; Breitenstein, O.; Bauer, J.; Lotnyk, A.; Michl, B.; Nagel, H.; Schütt, A.; Carstensen, J.; Föll, H.; Trupke, T.; Augarten, Y.; Kampwerth, H.; Bardos, R.A.; Pingel, S.; Berghold, J.; Warta, W.; Glunz, S.W.
Conference Paper
2008Temperature-dependent quasi-steady-state photoluminescence lifetime measurements for defect spectroscopy
Rüdiger, M.; Roth, T.; Warta, W.; Glunz, S.W.
Conference Paper
2008Verification of power loss mechanisms contributing to the illuminated lock-in thermography (ILIT) signal
Walter, B.; Kasemann, M.; Grote, D.; Ebser, J.; Kwapil, W.; Warta, W.
Conference Paper
2007Accuracy of inline IV measurements under industrial conditions
Krieg, A.; Weil, A.; Schäffer, E.; Hohl-Ebinger, J.; Warta, W.; Rein, S.
Conference Paper
2007Advances in infrared imaging methods for silicon material characterization
Schubert, M.C.; The, M.; Gundel, P.; Kasemann, M.; Pingel, S.; Warta, W.
Conference Paper
2007Analysing lateral inhomogeneities of silicon solar cells using a quasi 3D circuit simulation tool based on SPICE
Grote, D.; Kasemann, M.; Hermle, M.; Warta, W.
Conference Paper
2007Application of illuminated lock-in thermography to industrial silicon solar cells
Kwapil, W.; Kasemann, M.; Ebser, J.; Rein, S.; Warta, W.
Conference Paper
2007Diffusion lengths of silicon solar cells from luminescence images
Würfel, P.; Trupke, T.; Puzzer, T.; Schäffer, E.; Warta, W.; Glunz, S.W.
Journal Article
2007Diffusion lengths of silicon solar cells from luminescence images
Würfel, P.; Trupke, T.; Rüdiger, M.; Puzzer, T.; Schäffer, E.; Warta, W.; Glunz, S.W.
Conference Paper
2007Investigation on gettering of impurities during phosphorus diffusion in multicrystalline silicon
Schwaderer, D.; Riepe, S.; Habenicht, H.; Schultz, O.; Warta, W.
Conference Paper
2007Measuring the spectral distribution of a flash simulator
Hohl-Ebinger, J.; Siefer, G.; Warta, W.
Conference Paper
2007Non-linearity of solar cells in spectral response measurements
Hohl-Ebinger, J.; Siefer, G.; Warta, W.
Conference Paper
2007Out-diffusion of metal from grain boundaries in multicrystalline silicon during thermal processing
Habenicht, H.; Riepe, S.; Schultz, O.; Warta, W.
Conference Paper
2007Photovoltaic performance measurements in Europe
Betts, T.R.; Zdanowicz, T.; Prorok, M.; Kolodenny, W.; Moor, H. de; Borg, N. van der; Stellbogen, D.; Hohl-Ebinger, J.; Warta, W.; Friesen, G.; Chianese, D.; Guerin de Montgareuil, A.; Hermann, W.; Diaz Berrade, J.; Moracho, J.; Cueli, A.B.; Lagunas, R.A.R.; Gottschalg, R.
Conference Paper
2007Prediction of diffusion length in multicrystalline silicon solar cells from trapping images on starting material
Schubert, M.C.; Warta, W.
Journal Article
2007Progress with luminescence imaging for the characterisation of silicon wafers and solar cells
Trupke, T.; Bardos, R.A.; Abbott, M.D.; Würfel, P.; Pink, E.; Augarten, Y.; Chen, F.W.; Fisher, K.; Cotter, J.E.; Kasemann, M.; Rüdiger, M.; Kontermann, S.; Schubert, M.C.; The, M.; Glunz, S.W.; Warta, W.; Macdonald, D.; Tan, J.; Cuevas, A.; Bauer, J.; Gupta, R.; Breitenstein, O.; Buonassisi, T.; Tarnowski, G.; Lorenz, A.; Hartmann, H.P.; Neuhaus, D.H.; Fernandez, J.M.
Conference Paper
2007Quantitative carrier lifetime images optically measured on rough silicon wafers
Schubert, M.; Pingel, S.; The, M.; Warta, W.
Journal Article
2007Quantitative lifetime measurements with photoluminescence imaging
The, M.; Schubert, M.C.; Warta, W.
Conference Paper
2007Results from the second international module inter-comparison
Rummel, S.; Anderberg, A.; Emery, K.; King, D.; Tamizhmani, G.; Arends, T.; Atmaram, G.; Demetrius, L.; Zaaiman, W.; Cereghetti, N.; Herrmann, W.; Warta, W.; Neuberger, F.; Morita, K.; Hishikawa, Y.
Conference Paper
2007Shunt detection capabilities of luminescence imaging on silicon solar cells
Kasemann, M.; Grote, D.; Walter, B.; Trupke, T.; Augarten, Y.; Bardos, R.A.; Pink, E.; Abbott, M.D.; Warta, W.
Conference Paper
2007Solar cell efficiency tables (version 29)
Green, M.A.; Emery, K.; King, D.L.; Hishikawa, Y.; Warta, W.
Journal Article
2007Solar cell efficiency tables (version 30)
Green, M.A.; Emery, K.; Hisikawa, Y.; Warta, W.
Journal Article
2007Spatially resolved modeling of the combined effect of dislocations and grain boundaries on minority carrier lifetime in multicrystalline silicon
Stokkan, G.; Riepe, S.; Lohne, O.; Warta, W.
Journal Article
2007Systematic analysis of trapping as a tool to predict diffusion length in multicrystalline silicon cells
Gundel, P.; Schubert, M.C.; Warta, W.
Conference Paper
200620.1% efficient large area cell on 140 micron thin silicon wafer
Mason, N.; Schultz, O.; Russell, R.; Glunz, S.; Warta, W.
Conference Paper
2006Advanced defect and impurity diagnostics in silicon based on carrier lifetime measurements
Warta, W.
Journal Article
2006Analysis of laterally varying properties of industrially fabricated solar cells
Grote, D.; Warta, W.; Dominguez, P.S.; Heasman, K.; Russel, R.; Le Quang, N.; Enjalbert, N.
Conference Paper
2006Analysis of the effects caused by parameter inhomogeneity with a 2D modelling tool based on circuit simulation
Köber, M.; Hermle, M.; Isenberg, J.; Kasemann, M.; Cardenes, H.; Warta, W.
Conference Paper
2006Characterization of monolithic III-V multi-junction solar cells - challenges and application
Meusel, M.; Baur, C.; Siefer, G.; Dimroth, F.; Bett, A.W.; Warta, W.
Conference Paper, Journal Article
2006Comparison of luminescence imaging and illuminated lock-in thermography on silicon solar cells
Kasemann, M.; Schubert, M.C.; The, M.; Köber, M.; Hermle, M.; Warta, W.
Journal Article
2006Determination of spatially resolved trapping parameters in silicon with injection dependent carrier density imaging
Schubert, M.C.; Riepe, S.; Bermejo, S.; Warta, W.
Journal Article
2006Effect of dislocations on minority carrier diffusion length in practical silicon solar cells
Kieliba, T.; Riepe, S.; Warta, W.
Journal Article
2006Effect of dislocations on open circuit voltage in crystalline silicon solar cells
Kieliba, T.; Riepe, S.; Warta, W.
Journal Article
2006High-efficiency solar cells with laser-grooved buried contact front and laser-fired rear for industrial production
Schultz, O.; Glunz, S.W.; Warta, W.; Preu, R.; Grohe, A.; Köber, M.; Willeke, G.P.; Russel, R.; Fernandez, J.; Morilla, C.; Bueno, R.; Vincueria, I.
Conference Paper
2006Multicrystalline float zone silicon with Fe and Mo impurities: Solar cell process and lifetime studies
Coletti, G.; Geerligs, L.J.; Manshanden, P.; Riepe, S.; Warta, W.; Arumughan, J.; Kopecek, R.
Conference Paper
2006Optimisation of the power measurement of silicon photovoltaic modules
Kiefer, K.; Warta, W.; Hohl-Ebinger, J.; Herrmann, W.; Heisterkamp, N.
Conference Paper
2006Photoluminescence imaging of silicon wafers
Trupke, T.; Bardos, R.A.; Schubert, M.C.; Warta, W.
Journal Article
2006Redistribution of recombination active defects and trapping effects in multicrystalline silicon after wet thermal oxidation
Riepe, S.; Schultz, O.; Warta, W.
Conference Paper
2006Solar cell efficiency tables (version 27)
Green, M.A.; Emery, K.; King, D.L.; Hisikawa, Y.; Warta, W.
Journal Article
2006Solar cell efficiency tables (version 28)
Green, M.A.; Emery, K.; King, D.L.; Hishikawa, Y.; Warta, W.
Journal Article
2006Spatially resolved trapping detection and correlation with material quality in multicrystalline silicon
Schubert, M.C.; Riepe, S.; Warta, W.
Conference Paper
2006Verfahren und Vorrichtung zur Inaktivierung von Trapping-Effekten in dotierten Halbleitern
Schubert, M.; Rein, S.; Isenberg, J.; Warta, W.; Glunz, S.W.
Patent
2005Comparison of different dielectric passivation layers for application in industrially feasible high-efficiency crystalline silicon solar cells
Glunz, S.W.; Grohe, A.; Hermle, M.; Hofmann, M.; Janz, S.; Roth, T.; Schultz, O.; Vetter, M.; Martin, I.; Ferré, R.; Bermejo, S.; Wolke, W.; Warta, W.; Preu, R.; Willeke, G.
Conference Paper
2005Comparison of the surface passivation quality of SiCx films on p-type and n-type multicrystalline silicon
Vetter, M.; Bermejo, S.; Martin, I.; Garin, M.; Alcubilla, R.; Riepe, S.; Rein, S.; Warta, W.
Conference Paper
2005Impact of metal silicide precipitate dissolution during rapid thermal processing of multicrystalline silicon solar cells
Buonassisi, T.; Istratov, A.A.; Peters, S.; Ballif, C.; Isenberg, J.; Riepe, S.; Warta, W.; Schindler, R.; Willeke, G.; Cai, Z.; Lai, B.; Weber, E.R.
Journal Article
2005Injection dependent carrier density imaging measurements including correction for trapping effects
Schubert, M.C.; Isenberg, J.; Rein, S.; Bermejo, S.; Glunz, S.W.; Warta, W.
Conference Paper
2005Lifetime characteristics and gettering effects in n-type multicrystalline silicon block material
Riepe, S.; Lautenschlager, H.; Ghosh, M.; Müller, A.; Warta, W.
Conference Paper
2005Lock-in thermography - A universal tool for local analysis of solar cells
Breitenstein, O.; Rakotoniaina, J.P.; Kaes, M.; Seren, S.; Pernau, T.; Hahn, G.; Warta, W.; Isenberg, J.
Conference Paper
2005Quantifying the effect of metal-rich precipitates on minority carrier diffusion length in multicrystalline silicon using synchrotron-based spectrally resolved x-ray beam-induced current
Buonassisi, T.; Istratov, A.A.; Pickett, M.D.; Marcus, M.A.; Hahn, G.; Ciszek, T.F.; Riepe, S.; Isenberg, J.; Warta, W.; Schindler, R.; Willeke, G.; Weber, E.R.
Journal Article
2005Range of loss mechanisms accessible by illuminated lock in thermography (ILIT)
Isenberg, J.; Heide, A.S.H. van der; Warta, W.
Conference Paper
2005Recent developments in carrier lifetime imaging
Warta, W.; Schubert, M. C.; Isenberg, J.; Bermejo, S.; Riepe, S.; Diez, S.
Presentation
2005The results of the second world photovoltaic scale recalibration
Winter, S.; Metzdorf, J.; Emery, K.; Fabero, F.; Hishikawa, Y.; Hund, B.; Müllejans, H.; Sperling, A.; Warta, W.
Conference Paper
2005Sheet resistance imaging (SRI) - A contactless and spatially resolved method for the determination of doping inhomogeneities
Isenberg, J.; Schubert, M.C.; Biro, D.; Froitzheim, A.; Warta, W.
Conference Paper
2005Short communication: Investigation of series resistance losses by illuminated lock-in thermography
Isenberg, J.; Heide, A.S.H. van der; Warta, W.
Journal Article
2005Solar cell efficiency tables (version 25)
Green, M.A.; Emery, K.; King, D.L.; Igari, S.; Warta, W.
Journal Article
2005Solar cell efficiency tables (version 26)
Green, M.A.; Emery, K.; King, D.L.; Igari, S.; Warta, W.
Journal Article
2005Spatially resolved assessment of power losses due to bulk material quality and metallization problems
Isenberg, J.; Heide, A.S.H. van der; Warta, W.
Conference Paper
2005Synchrotron-based investigations of the nature and impact of iron contamination in multicrystalline silicon solar cells
Buonassisi, T.; Istratov, A.A.; Heuer, M.; Marcus, M.A.; Jonczyk, R.; Isenberg, J.; Lai, B.; Cai, Z.H.; Heald, S.; Warta, W.; Schindler, R.; Willeke, G.; Weber, E.R.
Journal Article
2004Alternatives to boron-doped Czochralski for silicon solar cell processing
Diez, S.; Vedde, J.; Shoulga, Y.G.; Vlasenko, T.V.; Glunz, S.W.; Warta, W.; Willeke, G.
Conference Paper
2004Carrier density imaging as a tool for characterising the electrical activity of defects in pre-processed multicrystalline silicon
Riepe, S.; Stokkan, G.; Kieliba, T.; Warta, W.
Conference Paper
2004Dependence of spectral response of dye solar cells on bias light illumination
Hohl-Ebinger, J.; Hinsch, A.; Sastrawan, R.; Warta, W.; Würfel, U.
Conference Paper
2004Fast, contactless and spatially resolved measurement of sheet resistance by an infrared method
Isenberg, J.; Biro, D.; Warta, W.
Journal Article
2004Free carrier absorption in heavily doped silicon layers
Isenberg, J.; Warta, W.
Journal Article
2004Illuminated lock-in thermography (ILT) - new method for spatially resolved assessment of power losses in solar cells
Isenberg, J.; Warta, W.
Conference Paper
2004Impact of iron contamination in multicrystalline silicon solar cells: Origins, chemical states, and device impacts
Buonassisi, T.; Heuer, M.; Istratov, A.A.; Marcus, M.A.; Jonczyk, R.; Lai, B.; Cai, Z.; Isenberg, J.; Warta, W.; Schindler, R.; Weber, E.R.
Conference Paper
2004Increased wafer yield for solar cells in top and bottom regions of cast multicrystalline silicon
Riepe, S.; Ghosh, M.; Müller, A.; Lautenschlager, H.; Grote, D.; Warta, W.; Schindler, R.
Conference Paper
2004Investigation of large area cell and module spectral response measurement
Hohl-Ebinger, J.; Warta, W.
Conference Paper
2004Nafion® polymer film as a low-temperature passivation for lifetime measurements on silicon wafers
Stokkan, G.; Isenberg, J.; Biro, D.; Warta, W.; Hagen, G.
Conference Paper
2004Realistic evaluation of power losses in solar cells by using thermographic methods
Isenberg, J.; Warta, W.
Journal Article
2004Solar-cell efficiency tables (version-23)
Green, M.A.; Emery, K.; King, D.L.; Igari, S.; Warta, W.
Journal Article
2004Solar-cell efficiency tables (version-24)
Green, M.A.; Emery, K.; King, D.L.; Igari, S.; Warta, W.
Journal Article
2004Spatially resolved evaluation of power losses in industrial solar cells by illuminated lock-in thermography
Isenberg, J.; Warta, W.
Journal Article
2004Spatially resolved IR-measurement techniques for solar cells
Isenberg, J.; Riepe, S.; Schubert, M.C.; Glunz, S.W.; Warta, W.
Conference Paper
2004Temperature dependent carrier lifetime images
Schubert, M.C.; Isenberg, J.; Rein, S.; Warta, W.
Conference Paper
2004Thermographic imaging of free carrier density in silicon
Schubert, M.C.; Isenberg, J.; Riepe, S.; Warta, W.
Journal Article
2004Verfahren und Anordnung zur strahlungsinduzierten Bestimmung der lokalen Verteilung von Verluststroemen bzw. Verlustleistung in Halbleiterbauelementen
Isenberg, J.; Warta, W.; Riepe, S.
Patent
2003Analyse von Leistungsverlusten in c-Si-Solarzellen
Isenberg, J.; Warta, W.
Conference Paper
2003Analysis of edge recombination for high-efficiency solar cells at low illumination densities
Hermle, M.; Dicker, J.; Warta, W.; Glunz, S.W.; Willeke, G.
Conference Paper
2003Averaging of laterally inhomogeneous lifetimes for one-dimensional modeling of solar cells
Isenberg, J.; Dicker, J.; Warta, W.
Journal Article
2003Diffusion properties of ion-implanted vanadium in PECVD-SiO2 and PECVD-SiN(x)
Isenberg, J.; Reber, S.; Warta, W.
Journal Article
2003Imaging method for laterally resolved measurement of minority carrier densities and lifetimes: measurement principle and first applications
Isenberg, J.; Riepe, S.; Glunz, S.W.; Warta, W.
Journal Article
2003Solar cell efficiency tables (version 21)
Green, M.A.; Emery, K.; King, D.L.; Igari, S.; Warta, W.
Journal Article
2003Solar cell efficiency tables (version 22)
Green, M.A.; Emery, K.; King, D.L.; Igari, S.; Warta, W.
Journal Article
2003Spatially resolved lifetime imaging of silicon wafers by measurement of infrared emission
Schubert, M.C.; Isenberg, J.; Warta, W.
Journal Article
2003Spectral response measurements of monolithic GaInP/Ga(In)As/Ge triple-junction solar cells
Meusel, M.; Baur, C.; Letay, G.; Bett, A.W.; Warta, W.; Fernandez, E.
Journal Article
2003Towards 20% efficient silicon solar cells manufactured at 60 MWp per annum
Bruton, T.; Mason, N.B.; Roberts, S.; Nast-Hartley, O.; Gledhill, S.; Fernandez, J.; Russell, R.; Warta, W.; Glunz, S.W.; Schultz, O.; Hermle, M.; Willeke, G.
Conference Paper
2002Advanced defect characterisation by combining temperature- and injection-dependent lifetime spectroscopy (TDLS and IDLS)
Rein, S.; Lichtner, P.; Warta, W.; Glunz, S.W.
Conference Paper
2002Advanced defect characterization by combining temperature- and injection-dependent lifetime spectroscopy (TDLS and IDLS)
Rein, S.; Lichtner, P.; Warta, W.; Glunz, S.W.
Conference Paper
2002Analysis of one-sun mono-crystalline rear-contacted silicon solar cells with efficiencies of 22.1%
Dicker, J.; Schumacher, J.O.; Warta, W.; Glunz, S.W.
Journal Article
2002Analysis of the effect of diffusion length distributions on global solar cell parameters by simplified 2D modelling
Isenberg, J.; Dicker, J.; Warta, W.
Conference Paper
2002Carrier density and lifetime imaging of silicon wafers by infrared lock-in thermography
Riepe, S.; Isenberg, J.; Ballif, C.; Glunz, S.W.; Warta, W.
Conference Paper
2002Carrier density imaging (CDI): A spatially resolved lifetime measurement suitable for in-line process-control
Isenberg, J.; Riepe, S.; Glunz, S.W.; Warta, W.
Conference Paper
2002Correlation of spatially resolved lifetime measurements with overall solar cell parameters
Isenberg, J.; Dicker, J.; Riepe, S.; Ballif, C.; Peters, S.; Lautenschlager, H.; Schindler, R.; Warta, W.
Conference Paper
2002Defect and impurity diagnostics and process monitoring
Warta, W.
Journal Article
2002Effect of shunt distribution on the overall solar cell performance investigated by circuit simulation
Dicker, J.; Isenberg, J.; Warta, W.
Conference Paper
2002Electrical and thermal properties of the metastable defect in boron-doped Czochralski silicon (Cz-Si)
Rein, S.; Rehrl, T.; Warta, W.; Glunz, S.W.; Willeke, G.
Conference Paper
2002High-efficiency cell structures for medium-quality silicon
Glunz, S.W.; Dicker, J.; Kray, D.; Lee, J.Y.; Preu, R.; Rein, S.; Schneiderlöchner, E.; Sölter, J.; Warta, W.; Willeke, G.
Conference Paper
2002Improving the efficiency of silicon ribbon solar cells using rapid thermal processing
Peters, S.; Ballif, C.; Borchert, D.; Radt, V.; Schindler, R.; Warta, W.; Willeke, G.; Häussler, C.; Lauinger, T.
Conference Paper
2002Influence of the simulator spectrum on the calibration of multi-junction solar cells under concentration
Siefer, G.; Baur, C.; Meusel, M.; Dimroth, F.; Bett, A.W.; Warta, W.
Conference Paper
2002Lifetime investigations of degradation effects in processed multicrystalline silicon wafers
Ballif, C.; Peters, S.; Borchert, D.; Häussler, C.; Isenberg, J.; Schindler, R.; Warta, W.; Willeke, G.
Conference Paper
2002Lifetime spectroscopy for defect characterization: Systematic analysis of the possibilities and restrictions
Rein, S.; Rehrl, T.; Warta, W.; Glunz, S.W.
Journal Article
2002Low temperature passivation of silicon surfaces by polymer films
Biro, D.; Warta, W.
Journal Article
2002A production route to high efficiency solar cells made with ultra thin silicon wafers
Bruton, T.M.; Roberts, S.R.; Russell, R.W.; Warta, W.; Glunz, S.; Koch, W.; Luque, A.; Lago, R.; Caballero, L.J.; Canizo, C. del; Marti, A.; Frisson, L.; Vallera, A.
Conference Paper
2002Rapid thermal processing. A comprehensive classification of silicon materials
Peters, S.; Lee, J.Y.; Ballif, C.; Borchert, D.; Glunz, S.W.; Warta, W.; Willeke, G.
Conference Paper
2002Rapid thermal surface passivation of silicon solar cells
Peters, S.; Ballif, C.; Borchert, D.; Huljic, D.M.; Lee, J.Y.; Preu, R.; Radt, V.; Schindler, R.; Schneiderlöchner, E.; Warta, W.
Conference Paper
2002Record fast thermal processing of 17.5 % efficient silicon solar cells
Peters, S.; Ballif, C.; Borchert, D.; Schindler, R.; Warta, W.; Willeke, G.
Journal Article
2002Separation of bulk diffusion length and rear surface recombination velocity in SR-LBIC mappings
Isenberg, J.; Bartels, O.; Warta, W.
Conference Paper
2002Solar cell efficiency tables (Version 19)
Green, M.A.; Emery, K.; King, D.L.; Igari, S.; Warta, W.
Journal Article
2002Solar cell efficiency tables. Version 20
Green, M.A.; Emery, K.; King, D.L.; Igari, S.; Warta, W.
Journal Article
2002Spectral mismatch correction and spectrometric characterization of monolithic III-V multi-junction solar cells
Meusel, M.; Adelhelm, R.; Dimroth, F.; Bett, A.W.; Warta, W.
Journal Article
2002Temperature-dependent lifetime spectroscopy (TDLS) in silicon
Rein, S.; Rehrl, T.; Warta, W.; Glunz, S.W.
Conference Paper
2001Crystalline silicon thin-film (CSiTF) solar cells on SSP and on ceramic substrates
Eyer, A.; Haas, F.; Kieliba, T.; Osswald, D.; Reber, S.; Zimmermann, W.; Warta, W.
Journal Article
2001Degradation of carrier lifetime in Cz silicon solar cells
Glunz, S.W.; Rein, S.; Warta, W.; Knobloch, J.; Wettling, W.
Journal Article
2001Determination of absolute external quantum efficiency of monolithic triple junction solar cells
Beckert, R.; Meusel, M.; Siefer, G.; Warta, W.; Bett, A.W.
Conference Paper
2001Minority carrier lifetime degradation in boron-doped Czochralski silicon
Glunz, S.W.; Rein, S.; Lee, J.Y.; Warta, W.
Journal Article
2001Solar cell efficiency tables (version 17)
Green, M.A.; Emery, K.; King, D.L.; Igari, S.; Warta, W.
Journal Article
2001Solar cell efficiency tables (version 18)
Green, M.A.; Emery, K.; King, D.L.; Igari, S.; Warta, W.
Journal Article
2000Analysis of rear contacted solar cell structures for cost-effective processes and materials
Dicker, J.; Sölter, J.; Schumacher, J.O.; Glunz, S.W.; Warta, W.
Conference Paper
2000Highly efficient 115-µm-thick solar cells on industrial Czochralski silicon
Warta, W.; Glunz, S.W.; Dicker, J.; Knobloch, J.
Journal Article
2000Improvements and limits of the open circuit voltage of mc-silicon solar cells
Schindler, R.; Warta, W.
Journal Article
2000Investigation of carrier lifetime in p-type Cz-silicon: Specific limitations and realistic prediction of cell performance
Rein, S.; Warta, W.; Glunz, S.W.
Conference Paper
2000Lifetime spectroscopy in silicon for solar cells
Rein, S.; Rehrl, T.; Isenberg, J.; Warta, W.; Glunz, S.W.
Conference Paper
2000Numerical analysis of crystalline silicon thin film solar cells on perforated SiO2 barrier layers
Dicker, J.; Schumacher, J.O.; Sölter, J.; Zimmermann, W.; Bau, S.; Warta, W.
Conference Paper
2000Procedures for evaluating multijunction concentrators
Emery, K.; Moriarty, T.; Kurtz, S.; Meusel, M.; Beckert, R.; Dimroth, F.; Bett, A.W.; Warta, W.
Conference Paper
2000Prospects for high efficiency silicon solar cells in thin Czochralski wafers using industrial processes
Bruton, T.M.; Roberts, S.; Heasman, K.C.; Russell, R.; Warta, W.; Glunz, S.W.; Dicker, J.; Knobloch, J.
Conference Paper
2000Purification of low quality silicon feedstock [for solar cell fabrication]
Einhaus, R.; Sarti, D.; Hässler, C.; Trassy, C.; Delannoy, Y.; Wolf, S. de; Ferrazza, F.; Martinuzzi, S.; Warta, W.
Conference Paper
2000RTP-processed 17.5 % efficient silicon solar cells featuring a record small thermal budget
Peters, S.; Lautenschlager, H.; Warta, W.; Schindler, R.
Conference Paper
2000Silicon dioxide and silicon nitride as diffusion barrier for transition metals in solar cell applications
Isenberg, J.; Reber, S.; Aschaber, J.; Warta, W.
Conference Paper
2000Solar cell efficiency tables
Green, M.A.; Emery, K.; King, D.L.; Igari, S.; Warta, W.
Journal Article
2000Solarzelle und Verfahren zu deren Herstellung
Warta, W.; Biro, D.
Patent
1999Degradation of carrier lifetime in Cz-Si solar cells
Glunz, S.W.; Rein, S.; Warta, W.; Knobloch, J.; Wettling, W.
Conference Paper
1999Field-effect passivation of the SiO(2)-Si interface
Glunz, S.W.; Biro, D.; Rein, S.; Warta, W.
Journal Article
1999Reduction of degradation losses in Cz-Si solar cells
Glunz, S.W.; Rein, S.; Warta, W.; Knobloch, J.; Wettling, W.
Conference Paper
1998Characterization of high-efficiency silicon solar cells with rear side contacts
Dicker, J.; Schumacher, J.O.; Glunz, S.W.; Warta, W.
Conference Paper
1998The effect of surface charges on the recombination at Si-SiO2 interfaces
Warta, W.; Biro, D.; Glunz, S.W.
Conference Paper
1998Impact of diffusion length distributions on the performance of mc-silicon solar cells
Warta, W.; Sutter, J.; Wagner, B.F.; Schindler, R.
Conference Paper
1998On the degradation of Cz-silicon solar cells
Glunz, S.W.; Rein, S.; Warta, W.; Knobloch, J.; Wettling, W.
Conference Paper
1998Screen printed and RT-processed emitters for crystalline silicon solar cells
Preu, R.; Schumacher, J.O.; Hahne, P.; Lautenschlager, H.; Reis, I.E.; Glunz, S.W.; Warta, W.
Conference Paper
1997Analysis and design of a thin film silicon solar cell on an insulating substrate
Schumacher, J.O.; Hebling, C.; Warta, W.
Conference Paper
1997Analytical solution for charge carrier transients in a two-layer-structure
Henninger, V.; Warta, W.
Conference Paper
1997Characterization of silicon solar cells with interdigitated contacts
Schumacher, J.O.; Dicker, J.; Glunz, S.; Hebling, C.; Knobloch, J.; Warta, W.; Wettling, W.
Conference Paper
1997Optimization of mesh-structured emitters
Glunz, S.W.; Schumacher, J.; Warta, W.; Knobloch, J.; Wettling, W.
Conference Paper
1996Innovative Charakterisierungsverfahren zur Unterstützung der Solarzellentechnologie
Füssel, W.; Glunz, S. W.; Warta, W.
Book Article
1996Lifetime and material characteristics of multicrystalline silicon measured with high spatial resolution
Glunz, S.W.; Hebling, C.; Warta, W.
Conference Paper
1996Open circuit voltage losses in multicrystalline silicon
Baldner, R.; Lautenschlager, H.; Schetter, C.; Schindler, R.; Warta, W.
Conference Paper
1996Solar cells with efficiencies above 21 % processed from Czochralski grown silicon
Knobloch, J.; Glunz, S.W.; Biro, D.; Warta, W.; Schäffer, E.; Wettling, W.
Conference Paper
1996VOC-limits of high efficiency mc-Si solar cells investigated by the mini solar cell (MSC) method
Baldner, R.; Glunz, S.W.; Schindler, R.; Warta, W.; Wettling, W.
Conference Paper
199521 % efficient solar cells processed from Czochralski grown silicon
Knobloch, J.; Glunz, S.W.; Henninger, V.; Warta, W.; Wettling, W.; Schomann, F.; Schmidt, W.; Endrös, A.; Münzer, K.A.
Conference Paper
1995Analysis of LPCVD oxides for the passivation of high efficiency silicon solar cells
Rosmeulen, M.; Glunz, S.W.; Warta, W.; Knobloch, J.; Wettling, W.
Conference Paper
1995Emitter dark saturation currents of high-efficiency solar cells with inverted pyramids
Glunz, S.W.; Sterk, S.; Steeman, R.; Warta, W.; Knobloch, J.; Wettling, W.
Conference Paper
1995High resolution lifetime mapping using modulated free carrier absorption
Glunz, S.W.; Warta, W.
Journal Article
1995Interdigitated grid for silicon thin film solar cells on SiO2-layers
Hebling, C.; Gaffke, R.; Sterk, S.; Warta, W.
Conference Paper
1995Quantenausbeute hocheffizienter texturierter Silicium-Solarzellen
Schumacher, J.; Sterk, S.; Wagner, B.; Warta, W.
Abstract
1995Quantum efficiency analysis of high-efficiency solar cells with textured surfaces
Schumacher, J.; Sterk, S.; Wagner, B.; Warta, W.
Conference Paper
1995Single step rapid thermal diffusion for selective emitter formation
Noel, S.; Schindler, R.; Glunz, S.W.; Warta, W.; Wettling, W.
Conference Paper
1994Comparison of spatially resolved carrier lifetimes in mc-Si with solar cell and material characteristics
Glunz, S.W.; Hebling, C.; Warta, W.; Wettling, W.
Conference Paper
1994Diffusion length from spatial resolution of photoluminescence in silicon
Daub, E.; Klopp, P.; Kugler, S.; Würfel, P.; Schindler, R.; Warta, W.
Conference Paper
1994High efficiency, low cost buried contact silicon solar cells
Honsberg, C.B.; Wenham, S.R.; Ebong, A.; Taouk, M.; Tang, Y.-H.; Ghozati, S.; Yun, F.; Grados, A.; Green, M.A.; Warta, W.
Conference Paper
1994Injection-level dependent recombination velocities at the Si-SiO2 interface for various dopant concentrations
Glunz, S.W.; Sproul, A.B.; Warta, W.; Wettling, W.
Journal Article
1994Properties of multicrystalline silicon heat treated by classical and rapid thermal processing
Warta, W.; Glunz, S.W.; Sproul, A.B.; Lautenschlager, H.; Reis, I.; Schindler, R.
Conference Paper
1994Understanding effective lifetimes measured on oxidized silicon wafers with different techniques
Glunz, S.W.; Sproul, A.B.; Sterk, S.; Warta, W.
Conference Paper
1993Field effect passivation of high efficiency silicon solar cells
Aberle, A.G.; Glunz, S.; Warta, W.
Journal Article
1993Limits and improvements of diffusion length determination by the constant short circuit current technique
Warta, W.
Conference Paper
1993Multicrystalline silicon layers for photovoltaic applications grown by a modified CVD process
Campe, H. von; Cembolista, B.; Ebinger, H.; Hoffmann, W.; Huth, U.; Warzawa, W.; Warta, W.
Conference Paper
1993Rapid optical thermal processing of silicon solar cells
Schindler, R.; Reis, I.; Wagner, B.; Eyer, A.; Lautenschlager, H.; Schetter, C.; Warta, W.; Hartiti, B.; Slaoui, A.; Muller, J.C.; Siffert, P.
Conference Paper
1992Impact of illumination level and oxide parameters on Shockley-Read-Hall recombination at the Si-SiO2 interface
Aberle, A.G.; Glunz, S.; Warta, W.
Journal Article
1991Impact of metallization techniques on 20 % efficient silicon solar cells
Kopp, J.; Warta, W.; Aberle, A.G.; Glunz, S.; Knobloch, J.
Conference Paper
1991SiO2-passivated high efficiency silicon solar cells - process dependence of Si-SiO2 interface recombination
Aberle, A.; Glunz, S.; Warta, W.; Kopp, J.; Knobloch, J.
Conference Paper
1990Starting points for raising the efficiency of practical silicon solar cells
Knobloch, J.; Aberle, A.G.; Warta, W.; Voss, B.
Conference Paper
1990Surface passivation of high efficiency silicon solar cells
Aberle, A.G.; Warta, W.; Knobloch, J.; Voß, B.
Conference Paper
1989Comprehensive characterization of high efficiency silicon solar cells
Warta, W.; Aberle, A.G.; Knobloch, J.; Voß, B.
Conference Paper
1988Dependence of surface recombination velocities at silicon solar cell surfaces on incident light intensity
Knobloch, J.; Aberle, A.G.; Warta, W.; Voss, B.
Conference Paper
1988Determination of recombination parameters in silicon solar cells using light induced transients
Warta, W.; Bergmann, R.; Voß, B.
Conference Paper