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| 2021 | The Potential of Cast Silicon
Schubert, M.; Schindler, F.; Benick, J.; Riepe, S.; Krenckel, P.; Richter, A.; Müller, R.; Hammann, B.; Nold, S. | Journal Article |
| 2021 | Propagation of Crystal Defects During Directional Solidification of Silicon via Induction of Functional Defects
Krenckel, P.; Hayama, Y.; Schindler, F.; Trötschler, T.; Riepe, S.; Usami, N. | Journal Article |
| 2020 | 3D visualization of growth interfaces in cast Si ingot using inclusions distribution
Kamibeppu, S.; Krenckel, P.; Trötschler, T.; Hess, A.; Riepe, S.; Usami, N. | Journal Article |
| 2020 | Atom Probe Tomography Study of Gettering in High-Performance Multicrystalline Silicon
Tweddle, D.; Hamer, P.; Shen, Z.; Heinz, F.D.; Krenckel, P.; Riepe, S.; Schindler, F.; Wilshaw, P.R.; Moody, M.P. | Journal Article |
| 2020 | Cast-mono Silicon Wafers for a Sustainable PV Market Growth
Riepe, S.; Nold, S.; Brailovsky, P.; Krenckel, P.; Friedrich, L.; Janz, S.; Preu, R. | Conference Paper |
| 2020 | The Crystal Growth Explorer: Real-Time Navigable 3D Visualization of Silicon Grains and Defect Related Data in Cast-Mono and Multicrystalline Bricks
Schönauer, J.; Demant, M.; Trötschler, T.; Kovvali, A.S.; Schremmer, H.; Krenckel, P.; Riepe, S.; Rein, S. | Conference Paper |
| 2019 | Correlation of defect luminescence and recombination in multicrystalline silicon
Wyller, Guro Marie; Schindler, Florian; Kwapil, Wolfram; Schön, Jonas; Olsen, Espen; Haug, Halvard; Riepe, Stephan; Schubert, Martin C. | Journal Article |
| 2019 | Enhanced Material Quality in SMART Moni-Si Block Cast Ingots by Introduction of Functional Defects
Riepe, S.; Krenckel, P.; Hayama, Y.; Hess, A.; Trötschler, T.; Kutsukake, K.; Maus, S.; Schindler, F.; Usami, N. | Conference Paper |
| 2019 | Limiting Defects in n-Type Multicrystalline Silicon Solar Cells
Schubert, M.C.; Schindler, F.; Schön, J.; Kwapil, W.; Benick, J.; Müller, R.; Heinz, F.D.; Fell, A.; Riepe, S.; Morishige, A. | Journal Article |
| 2018 | Analysis of grain structure evolution based on optical measurements of mc-Si wafers
Strauch, T.; Demant, M.; Krenckel, P.; Riepe, S.; Rein, S. | Journal Article |
| 2018 | Determination of boron and hydrogen in materials for multicrystalline solar cell production with prompt gamma activation analysis
Stieghorst, C.; Hampel, G.; Karches, B.; Krenckel, P.; Kudějová, P.; Plonka, C.; Révay, Z.; Riepe, S.; Welter, K.; Wiehl, N. | Journal Article |
| 2018 | Development of high performance multicrystalline silicon with controlled seeding
Hess, Adam; Krenckel, Patricia; Trötschler, Theresa; Fehrenbach, Tobias; Riepe, Stephan | Conference Paper |
| 2018 | Optimization of inline processes for the production of freestanding epitaxially grown thin films for solar cells
Ivanov, Alexey; Sorgenfrei, R.; Gust, Elke; Barth, Philipp; Nieuwenhuysen, Kris van; Kühnhold-Pospischil, Saskia; Riepe, Stephan; Janz, Stefan | Conference Paper |
| 2018 | Towards the Efficiency Limits of Multicrystalline Silicon Solar Cells
Schindler, F.; Fell, A.; Müller, R.; Benick, J.; Richter, A.; Feldmann, F.; Krenckel, P.; Riepe, S.; Schubert, M.C.; Glunz, S.W. | Journal Article, Conference Paper |
| 2017 | Approaching 22% efficiency with multicrystalline n-type silicon solar cells
Benick, J.; Müller, R.; Schindler, F.; Richter, A.; Hauser, H.; Feldmann, F.; Krenckel, P.; Riepe, S.; Schubert, M.C.; Hermle, M.; Glunz, S.W. | Conference Paper |
| 2017 | Determination of impurity distributions in ingots of solar grade silicon by neutron activation analysis
Karches, B.; Schön, J.; Gerstenberg, H.; Hampel, G.; Krenckel, P.; Plonka, C.; Ponsard, B.; Riepe, S.; Stieghorst, C.; Wiehl, N. | Journal Article |
| 2017 | Feeding of liquid silicon for high performance multicrystalline silicon with increased ingot height and homogenized resistivity
Krenckel, P.; Riepe, S.; Schindler, F.; Strauch, T. | Journal Article |
| 2017 | Grain boundaries and dislocations in Si-bricks: Inline characterization on as-cut wafers
Strauch, T.; Demant, M.; Krenckel, P.; Riepe, S.; Rein, S. | Journal Article, Conference Paper |
| 2017 | High-Efficiency n-Type HP MC Silicon Solar Cells
Benick, J.; Richter, A.; Müller, R.; Hauser, H.; Feldmann, F.; Krenckel, P.; Riepe, S.; Schindler, F.; Schubert, M.C.; Hermle, M.; Bett, A.W.; Glunz, S.W. | Journal Article |
| 2017 | How to achieve efficiencies exceeding 22% with multicrystalline n-type silicon solar cells
Schindler, F.; Michl, B.; Krenckel, P.; Riepe, S.; Benick, J.; Müller, R.; Richter, A.; Glunz, S.W.; Schubert, M.C. | Journal Article, Conference Paper |
| 2017 | Identification of defect-suppressing grain boundaries in multicrystalline silicon based on measurements of as-cut wafers using advanced image processing
Strauch, T.; Demant, M.; Krenckel, P.; Riepe, S.; Rein, S. | Conference Paper |
| 2017 | Instrumental determination of phosphorus in silicon for photovoltaics by β spectroscopy: A new approach
Karches, B.; Welter, K.; Stieghorst, C.; Wiehl, N.; Reich, T.; Riepe, S.; Krenckel, P.; Gerstenberg, H.; Plonka, C. | Journal Article |
| 2017 | Material 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 |
| 2017 | Optimized multicrystalline silicon for solar cells enabling conversion efficiencies of 22%
Schindler, F.; Michl, B.; Krenckel, P.; Riepe, S.; Benick, J.; Müller, R.; Richter, A.; Glunz, S.W.; Schubert, M.C. | Journal Article |
| 2017 | Origin and impact of crystallographic defects in epitaxially grown Si wafers
Janz, S.; Amiri, D.; Gust, E.; Kühnhold-Pospischil, S.; Riepe, S.; Heinz, F.; Drießen, M. | Conference Paper |
| 2016 | Analysis of grain structure evolution based on optical measurements of mc Si wafers
Strauch, T.; Demant, M.; Krenckel, P.; Riepe, S.; Rein, S. | Journal Article |
| 2016 | Analysis of grain structure evolution via image processing based on optical measurements of mc Si wafers
Strauch, T.; Demant, M.; Krenckel, P.; Riepe, S.; Rein, S. | Conference Paper |
| 2016 | Improving the material quality of silicon ingots by aluminum gettering during crystal growth
Schön, J.; Krenckel, P.; Karches, B.; Schindler, F.; Giesecke, J.; Stieghorst, C.; Wiehl, N.; Schubert, M.C.; Riepe, S. | Journal Article |
| 2016 | Material 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 |
| 2016 | N-type multicrystalline silion for high efficiency solar cells
Riepe, S.; Krenckel, P.; Schindler, F.; Schubert, M.; Benick, J. | Journal Article |
| 2016 | Optimized Grain Size of Seed Plates for High Performance Multicrystalline Silicon
Krenckel, P.; Riepe, S.; Schindler, F.; Strauch, T. | Conference Paper |
| 2015 | Development of multicrystalline silicon for 20 % efficient n-Type solar cells
Riepe, S.; Krenckel, P.; Schindler, F.; Schmid, C.; Strauch, T.; Benick, J.; Schubert, M.C. | Conference Paper |
| 2015 | Efficiency 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 |
| 2015 | Grain boundary segregation in multicrystalline silicon: Correlative characterization by EBSD, EBIC, and atom probe tomography
Stoffers, A.; Cojocaru-Mirédin, O.; Seifert, W.; Zaefferer, S.; Riepe, S.; Raabe, D. | Journal Article |
| 2015 | High 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 |
| 2015 | Identification 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 |
| 2015 | Potential 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 |
| 2014 | Efficiency-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 |
| 2014 | Influence of high aluminium content on the mechanical properties of directionally solidified multicrystalline silicon
Orellana, T.; Tejado, E.M.; Funke, C.; Riepe, S.; Pastor, J.Y.; Möller, H.J. | Journal Article |
| 2014 | The 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 |
| 2013 | Dependence of phosphorus gettering and hydrogen passivation efficacy on grain boundary type in multicrystalline silicon
Karzel, P.; Ackermann, M.; Gröner, L.; Reimann, C.; Zschorsch, M.; Meyer, S.; Kiessling, F.; Riepe, S.; Hahn, G. | Journal Article |
| 2013 | Determination 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 |
| 2013 | Impact 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 |
| 2013 | Influence of argon flow rate on melt convection and incorporation of SiC in multicrystalline silicon
Schmid, C.; Schumann, M.; Haas, F.; Riepe, S. | Conference Paper |
| 2012 | Challenges of the multi wire sawing process for thin wafers below 120 µm thickness
Weber, B.; Riepe, S. | Conference Paper |
| 2012 | Impurity control of quartz crucible coatings for directional solidification of silicon
Schumann, M.; Meyer, S.; Schmid, C.; Haas, F.; Riepe, S.; Cröll, A. | Conference Paper |
| 2012 | Tomographic defect reconstruction of multicrystalline silicon ingots using photoluminescence images of As-Cut wafers and solar cells
Zeidler, R.; Haunschild, J.; Seeber, B.; Riepe, S.; Höffler, H.; Fertig, F.; Reis, I.; Rein, S. | Conference Paper |
| 2011 | Grain Size Distribution of Multicrystalline Silicon for Structure Characterisation of Silicon Wafers
Schumann, M.; Haas, T.; Orellana Perez, T.; Riepe, S. | Conference Paper |
| 2011 | Impact of Impurities on the Mechanical Strength of Multicrystalline Silicon
Orellana Perez, T.; Funke, C.; Fütterer, W.; Riepe, S.; Möller, H.J.; Tejado Garrido, E.M.; Pastor Caño, J.Y. | Conference Paper |
| 2011 | Research on efficiency limiting defects and defect engineering in silicon solar cells - results of the German research cluster SolarFocus
Riepe, S.; Reis, I.E.; Kwapil, W.; Falkenberg, M.A.; Schön, J.; Behnken, H.; Bauer, J.; Kreßner-Kiel, D.; Seifert, W.; Koch, W. | Journal Article |
| 2011 | Verfahren zur Analyse des Erstarrungsverhaltens einer Siliziumschmelze zu einem Siliziumkristall
Haunschild, Jonas; Riepe, Stephan; Haas, F. | Patent |
| 2010 | An experimental access to the coating influence on multicrystalline silicon materials
Schumann, M.; Mück, P.; Haas, F.; Riepe, S. | Conference Paper |
| 2010 | Mechanical characterization of epitaxial wafer equivalents from block casting to thin film deposition
Orellana Pérez, T.; Funke, C.; Fütterer, W.; Wagner, T.; Riepe, S.; Reber, S.; Möller, H.J. | Conference Paper |
| 2010 | Quality control using luminescence imaging in production of mc-silicon solar cells from UMG feedstock
Haunschild, J.; Glatthaar, M.; Riepe, S.; Rein, S. | Conference Paper |
| 2009 | Effect of impurities on solar cell parameters in intentionally contaminated multicrystalline silicon
Reis, I.E.; Riepe, S.; Koch, W.; Bauer, J.; Beljakowa, S.; Breitenstein, O.; Habenicht, H.; Kreßner-Kiel, D.; Pensl, G.; Schön, J.; Seifert, W. | Conference Paper |
| 2009 | Mechanical characterization of wafer equivalent substrate materials from alternative silicon feedstock
Orellana Pérez, T.; Schmid, C.; Riepe, S.; Reber, S.; Möller, H.J. | Conference Paper |
| 2009 | Reaching a kerf loss below 100 µm by optimizing the relation between wire thickness and abrasive size for multi-wire sawing
Schumann, M.; Singh, M.; Orellana Peres, T.; Riepe, S. | Conference Paper |
| 2009 | The solar cell wafering process
Schumann, M.; Orellana Peres, T.; Riepe, S. | Journal Article |
| 2008 | Impact 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 |
| 2008 | Silicon material technology and evaluation center (SIMTEC) at Fraunhofer ISE - achievements and visions
Riepe, S.; Schumann, M.; Schmich, E.; Janz, S.; Eyer, A.; Reber, S.; Bett, A.W.; Weber, E.R. | Conference Paper |
| 2007 | Investigation on gettering of impurities during phosphorus diffusion in multicrystalline silicon
Schwaderer, D.; Riepe, S.; Habenicht, H.; Schultz, O.; Warta, W. | Conference Paper |
| 2007 | Method for determination of recombination activity of cylindric conduction channels for back-contacted solar cells
Mingirulli, N.; Biro, D.; Preu, R.; Glunz, S.W.; Riepe, S. | Journal Article |
| 2007 | Out-diffusion of metal from grain boundaries in multicrystalline silicon during thermal processing
Habenicht, H.; Riepe, S.; Schultz, O.; Warta, W. | Conference Paper |
| 2007 | Spatially 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 |
| 2006 | Determination of spatially resolved trapping parameters in silicon with injection dependent carrier density imaging
Schubert, M.C.; Riepe, S.; Bermejo, S.; Warta, W. | Journal Article |
| 2006 | Effect of dislocations on minority carrier diffusion length in practical silicon solar cells
Kieliba, T.; Riepe, S.; Warta, W. | Journal Article |
| 2006 | Effect of dislocations on open circuit voltage in crystalline silicon solar cells
Kieliba, T.; Riepe, S.; Warta, W. | Journal Article |
| 2006 | Gettering of multicrystalline silicon for high-efficiency solar cells
Schultz, O.; Glunz, S.W.; Riepe, S.; Willeke, G.P. | Conference Paper |
| 2006 | High-efficiency solar cells on phosphorus gettered multicrystalline silicon substrates
Schultz, O.; Glunz, S.W.; Riepe, S.; Willeke, G.P. | Journal Article |
| 2006 | Industrial rear sin-passivated multicrystalline silicon solar cells
Rinio, M.; Borchert, D.; Müller, S.; Riepe, S.; Tölle, R.; Janßen, L.; Kurz, H. | Conference Paper |
| 2006 | Influence of the thermal treatment during the saw damage etching process on the mechanical stability of multicrystalline silicon wafers
Borchert, D.; Riepe, S.; Kübler, R.; Beinert, J.; Kraft, T.; Kleer, G.; Petri, S. | Conference Paper |
| 2006 | Multicrystalline 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 |
| 2006 | Phosphorus-doped SiC as an excellent p-type Si surface passivation layer
Janz, S.; Riepe, S.; Hofmann, M.; Reber, S.; Glunz, S. | Journal Article |
| 2006 | Redistribution of recombination active defects and trapping effects in multicrystalline silicon after wet thermal oxidation
Riepe, S.; Schultz, O.; Warta, W. | Conference Paper |
| 2006 | Spatially resolved trapping detection and correlation with material quality in multicrystalline silicon
Schubert, M.C.; Riepe, S.; Warta, W. | Conference Paper |
| 2005 | Comparison 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 |
| 2005 | Impact 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 |
| 2005 | Lifetime characteristics and gettering effects in n-type multicrystalline silicon block material
Riepe, S.; Lautenschlager, H.; Ghosh, M.; Müller, A.; Warta, W. | Conference Paper |
| 2005 | Quantifying 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 |
| 2005 | Recent developments in carrier lifetime imaging
Warta, W.; Schubert, M.C.; Isenberg, J.; Bermejo, S.; Riepe, S.; Diez, S. | Presentation |
| 2004 | Carrier 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 |
| 2004 | Increased 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 |
| 2004 | Influence of high-temperature processes on multicrystalline silicon
Schultz, O.; Riepe, S.; Glunz, S.W. | Conference Paper |
| 2004 | Spatially resolved IR-measurement techniques for solar cells
Isenberg, J.; Riepe, S.; Schubert, M.C.; Glunz, S.W.; Warta, W. | Conference Paper |
| 2004 | Thermal degradation and gettering of solar grade multicrystalline silicon
Schultz, O.; Riepe, S.; Glunz, S.W. | Conference Paper |
| 2004 | Thermographic imaging of free carrier density in silicon
Schubert, M.C.; Isenberg, J.; Riepe, S.; Warta, W. | Journal Article |
| 2004 | Verfahren und Anordnung zur strahlungsinduzierten Bestimmung der lokalen Verteilung von Verluststroemen bzw. Verlustleistung in Halbleiterbauelementen
Isenberg, J.; Warta, W.; Riepe, S. | Patent |
| 2003 | Hocheffiziente Solarzellenstrukturen auf multikristallinem Silicium
Schultz, O.; Riepe, S.; Glunz, S.W.; Willeke, G. | Conference Paper |
| 2003 | Imaging 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 |
| 2003 | N-type multicrystalline silicon: A stable, high lifetime material
Cuevas, A.; Riepe, S.; Kerr, M.J.; Macdonald, D.H.; Coletti, G.; Ferrazza, F. | Conference Paper |
| 2002 | Carrier 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 |
| 2002 | Carrier 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 |
| 2002 | Correlation 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 |
| 2002 | Shunt imaging in solar cells using low cost commercial liquid crystal sheets
Ballif, C.; Peters, S.; Isenberg, J.; Riepe, S.; Borchert, D. | Conference Paper |