Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.
2018Author Correction: III-V-on-silicon solar cells reaching 33% photoconversion efficiency in two-terminal configuration (Nature Energy (2018) DOI: 10.1038/s41560-018-0125-0)
Cariou, R.; Benick, J.; Feldmann, F.; Höhn, O.; Hauser, H.; Beutel, P.; Razek, N.; Wimplinger, M.; Bläsi, B.; Lackner, D.; Hermle, M.; Siefer, G.; Glunz, S.W.; Bett, A.W.; Dimroth, F.
Journal Article
2018Author Correction: III-V-on-silicon solar cells reaching 33% photoconversion efficiency in two-terminal configuration (Nature Energy (2018) DOI: 10.1038/s41560-018-0125-0)
Cariou, R.; Benick, J.; Feldmann, F.; Höhn, O.; Hauser, H.; Beutel, P.; Razek, N.; Wimplinger, M.; Bläsi, B.; Lackner, D.; Hermle, M.; Siefer, G.; Glunz, S.W.; Bett, A.W.; Dimroth, F.
Journal Article
2018Component cell-based restriction of spectral conditions and the impact on CPV module power rating
Steiner, Marc; Muller, Matt; Siefer, Gerald; Bett, Andreas W.
Journal Article
2018Evaluation of 53 kW CPV system in India
Steiner, M.; Bösch, A.; Wekkeli, A.; Ojha, S.; Sardar, S.; Singh, J.; Singh, V.; Singh Chandok, J.; Siefer, G.
Presentation
2018High-speed quantum efficiency determination of multijunction solar cells
Missbach, T.; Dengler, S.A.; Siefer, G.; Bett, A.W.
Journal Article
2018III-V-on-silicon solar cells reaching 33% photoconversion efficiency in two-terminal configuration
Cariou, Romain; Benick, Jan; Feldmann, Frank; Höhn, Oliver; Hauser, Hubert; Beutel, Paul; Razek, Nasser; Wimplinger, Markus; Bläsi, Benedikt; Lackner, David; Hermle, Martin; Siefer, Gerald; Glunz, Stefan W.; Bett, Andreas W.; Dimroth, Frank
Journal Article
2018Luminescent Coupling in Multi-Junction Photovoltaic Devices Studied by Transient Voltage Measurements
Tayagaki, T.; Reichmuth, S.K.; Helmers, H.; Siefer, G.
Presentation
2018Photonic structures for III-V//Si multi-junction solar cells with efficiency >33%
Bläsi, B.; Höhn, O.; Hauser, H.; Tucher, N.; Cariou, R.; Benick, J.; Feldmann, F.; Beutel, P.; Lackner, D.; Siefer, G.; Glunz, S.W.; Bett, A.W.; Dimroth, F.; Hermle, M.
Conference Paper
2018Standardization of the CPV and car-roof PV technology in 2018 - Where are we going to go?
Araki, K.; Algora, C.; Siefer, G.; Nishioka, K.; Leutz, R.; Carter, S.; Wang, S.; Askins, S.; Ji, L.; Kelly, G.
Conference Paper
2018Towards nanowire tandem junction solar cells on silicon
Borgström, M.T.; Magnusson, M.H.; Dimroth, F.; Siefer, G.; Höhn, O.; Riel, H.; Schmid, H.; Wirths, S.; Björk, M.; Aberg, I.; Peijnenburg, W.; Vijver, M.; Tchernycheva, M.; Piazza, V.; Samuelson, L.
Journal Article
2018Transient Analysis of Luminescent Coupling Effects in Multi-junction Solar Cells
Tayagaki, T.; Reichmuth, K.; Helmers, H.; Siefer, G.
Journal Article
2018Understanding InP nanowire array solar cell performance by nanoprobe-enabled single nanowire measurements
Otnes, Gaute; Barrigón, Enrique; Sundvall, Christian; Svensson, K. Erik; Heurlin, Magnus; Siefer, Gerald; Samuelson, Lars; Åberg, Ingvar; Borgström, Magnus T.
Journal Article
2017BOL and EOL characterization of Azur 3G lilt solar cells for ESA juice mission
Khorenko, V.; Baur, C.; Siefer, G.; Schachtner, M.; Park, S.; Boizot, B.; Bourgoin, J.C.; Casale, M.; Campesato, R.
Conference Paper
2017High-speed broadband quantum efficiency determination of solar cells
Missbach, T.; Straub, R.S.L.; Benkhoff, T.M.; Siefer, G.
Journal Article
2017On the temperature dependence of dual-junction laser power converters
Reichmuth, S.K.; Helmers, H.; Philipps, S.P.; Schachtner, M.; Siefer, G.; Bett, A.W.
Journal Article
2017Research on multi-junction solar cells at Fraunhofer ISE
Bett, A.W.; Beutel, P.; Cariou, R.; Feifel, M.; Heckelmann, S.; Hoehn, O.; Klinger, V.; Lackner, D.; Niemeyer, M.; Ohlmann, J.; Oliva, E.; Predan, F.; Siefer, G.; Dimroth, F.
Presentation
2017Status of four-junction cell development at Fraunhofer ISE
Lackner, D.; Höhn, O.; Walker, A.W.; Niemeyer, M.; Beutel, P.; Siefer, G.; Schachtner, M.; Klinger, V.; Oliva, E.; Hillerich, K.; Kubera, T.; Guter, W.; Bett, A.W.; Dimroth, F.
Conference Paper
2017Status of solar generator related technology development activities supporting the juice mission
Baur, C.; Khorenko, V.; Siefer, G.; Inguimbert, V.; Park, S.; Boizot, B.; Bourgoin, J.C.; Casale, M.; Campesato, R.; Schnell, H.-G.; Gerhard, A.; Zanella, P.; Ferrando, E.; Reutenauer, X.; Bongers, E.; Gras, A.
Conference Paper
2017Uncertainty estimation of spectral matching ratio based power rating of CPV modules
Steiner, M.; Siefer, G.; Bett, A.W.
Conference Paper
201643 % direct sunlight conversion efficiency using 4J cell with achromatic full glass lens
Steiner, M.; Siefer, G.; Schmidt, T.; Wiesenfarth, M.; Dimroth, F.; Bett, A.W.
Conference Paper
201643% sunlight to electricity conversion efficiency using CPV
Steiner, M.; Siefer, G.; Schmidt, T.; Wiesenfarth, M.; Dimroth, F.; Bett, A.W.
Journal Article
2016CPV multijunction solar cell characterization
Osterwald, C.R.; Siefer, G.
Book Article
2016Four-junction wafer-bonded concentrator solar cells
Dimroth, Frank; Tibbits, Thomas N.D.; Niemeyer, Markus; Predan, Felix; Beutel, Paul; Karcher, Christian; Oliva, Eduard; Siefer, Gerald; Lackner, David; Fuß-Kailuweit, Peter; Bett, Andreas; Krause, Rainer; Drazek, Charlotte; Guiot, Eric; Wasselin, Jocelyne; Tauzin, Aurélie; Signamarcheix, Thomas
Journal Article
2016Frequency-division-multiplex-based quantum efficiency determination of solar cells
Mißbach, T.; Karcher, C.; Siefer, G.
Journal Article
2016Influence of Very Efficient Back Reflectors on the Quantum Efficiency of Solar Cells
Micha, D.N.; Walker, A.; Siefer, G.; Dimroth, F.; Bett, A.W.
Conference Paper
2016InP based engineered substrates for CPV cells above 46% of efficiency
Guiot, E.; Drouin, A.; Charles-Alfred, C.; Drazek, C.; Buttet, A. de; Tauzin, A.; Tibbits, T.; Beutel, P.; Karcher, C.; Oliva, E.; Siefer, G.; Dimroth, F.
Conference Paper
2016Integrated Power and Data Transceiver Devices for Power-by-Light Systems - A Concept Study
Helmers, H.; Lackner, D.; Siefer, G.; Oliva, E.; Dimroth, F.; Bett, A.W.
Conference Paper
2016Rating of CPV modules: Results of module round robins
Steiner, Marc; Siefer, Gerald; Baudrit, Mathieu; Askins, Stephen; Domínguez, César; Antón, Ignacio; Roca, Francesco; Fucci, Raffaele; Cancro, Carmine; Romano, Antonio; Graditi, Giorgio; Pugliatti, Paola Maria; Stefano, Agnese di; Kenny, Robert; Norton, Matthew; Minuto, Alessandro; Morabito, Paolo; Muller, Matthew; Riley, Daniel; Pratt, Larry
Conference Paper
2016A sensitivity analysis of the stepwise measurement procedure for the characterization of large area PV modules
Rapp, C.; Steiner, M.; Siefer, G.; Bett, A.W.
Journal Article
2016Transient I-V Measurement Set-up for Photovoltaic Laser Power Converters under Monochromatic Irradiance
Reichmuth, S.K.; Helmers, H.; Garza, C.E.; Vahle, D.; Boer, M. de; Stevens, L.; Mundus, M.; Helmers, H.; Bett, A.W.; Siefer, G.
Conference Paper
2015Analysis of a four lamp flash system for calibrating multi-junction solar cells under concentrated light
Schachtner, M.; Prado, M.L.; Reichmuth, S.K.; Siefer, G.; Bett, A.W.
Conference Paper
2015Analysis of the output of two isotype cell sets compared to a precicion spectroradiometer
Norton, M.; Galleano, R.; Siefer, G.; Steiner, M.; Kenny, R.; Zaaiman, W.
Conference Paper
2015CPV module design optimization for advanced multi-junction solar cell concepts
Steiner, M.; Kiefel, P.; Siefer, G.; Wiesenfarth, M.; Dimroth, F.; Krause, R.; Gombert, A.; Bett, A.W.
Conference Paper
2015CPV module with fresnel lens primary optics and homogenizing secondary optics
Wiesenfarth, M.; Dörsam, T.; Eltermann, F.; Hornung, T.; Siefer, G.; Steiner, M.; Riesen, S. van; Neubauer, M.; Boos, A.; Wanka, S.; Gombert, A.; Bett, A.W.
Conference Paper
2015FLATCON® CPV-module with 36.7% efficiency equipped with four-junction solar cells
Steiner, M.; Bösch, A.; Dilger, A.; Dimroth, F.; Dörsam, T.; Muller, M.; Hornung, T.; Siefer, G.; Wiesenfarth, M.; Bett, A.W.
Journal Article
2015Four-junction wafer bonded concentrator solar cells
Dimroth, F.; Tibbits, T.N.D.; Niemeyer, M.; Predan, F.; Beutel, P.; Karcher, C.; Oliva, E.; Siefer, G.; Lackner, D.; Fuß-Kailuweit, P.; Bett, A.W.; Krause, R.; Drazek, C.; Guiot, E.; Wasselin, J.; Tauzin, A.; Signamarcheix, T.
Conference Paper
2015Frequency division multiple-based light spectroscopy
Mißbach, T.; Karcher, C.; Siefer, G.; Bett, A.W.
Journal Article
2015Frequency division multiplex based quantum efficiency determination of solar cells
Missbach, T.; Karcher, C.; Siefer, G.
Conference Paper
2015NGCPV: A new generation of concentrator photovoltaic cells, modules and systems (a final review)
Datas, A.; Cristóbal, A.B.; Sala, G.; Anton Hernandez, I.; Minano, J.C.; Benítez, P.; Algora, C.; Bett, A.W.; Lackner, D.; Niemeyer, M.; Philipps, S.P.; Siefer, G.; Ekins-Daukes, N.J.; Roca, F.; Cancro, C.; Luque-Heredia, L.; Warmuth, W.; Baudrit, M.; Okada, Y.; Sugiyama, M.; Hishikawa, Y.; Takamoto, T.; Araki, K.; Fukuyama, A.; Nishioka, K.; Suzuki, H.; Kuze, N.; Moriyasu, Y.; Kita, T.; Kotagiri, A.; Kojima, N.; Martí Vega, A.; Yamaguchi, M.; Luque, A.
Conference Paper
2015Optical Investigation of a Sun Simulator for Concentrator PV Applications
Rapp, C.; Straub. V.; Rooyen, D.W. van; Thor, W. Y.; Siefer, G.; Bett, A.W.
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
2015Spectral network based on component cells under the SOPHIA European project
Nunez, R.; Anton, I.; Askins, S.; Sala, G.; Dominguez, C.; Voarino, P.; Steiner, M.; Siefer, G.; Fucci, R.; Roca, F.; Minuto, A.; Morabito, P.
Conference Paper
2015Stepwise measurement procedure for the characterization of large-area photovoltaic modules
Rapp, C.; Steiner, M.; Siefer, G.; Bett, A.W.
Journal Article
2015Translating outdoor CPV I-V measurements to a CSTC power rating and the associated uncertainty
Muller, M.; Kurtz, S.; Steiner, M.; Siefer, G.
Journal Article
2015YieldOpt, a model to predict the power output and energy yield for concentrating photovoltaic modules
Steiner, M.; Siefer, G.; Hornung, T.; Peharz, G.; Bett, A.W.
Journal Article
2014Analysis of temperature coefficients for III-V multi-junction concentrator cells
Siefer, G.; Bett, A.W.
Journal Article
2014Comparison of direct growth and wafer bonding for the fabrication of GaInP/GaAs dual-junction solar cells on silicon
Dimroth, Frank; Roesener, Tobias; Essig, Stephanie; Weuffen, Christoph; Wekkeli, Alexander; Oliva, Eduard; Siefer, Gerald; Volz, Kerstin; Hannappel, Thomas; Häussler, Dietrich; Jäger, Wolfgang; Bett, Andreas W.
Journal Article
2014Development of high efficiency wafer bonded 4-junction solar cells for concentrator photovoltaic applications
Dimroth, F.; Tibbits, T.N.D.; Beutel, P.; Karcher, C.; Oliva, E.; Siefer, G.; Schachtner, M.; Wekkeli, A.; Steiner, M.; Wiesenfarth, M.; Bett, A.W.; Krause, R.; Gerster, E.; Piccin, M.; Blanc, N.; Munoz Rico, M.; Drazek, C.; Guiot, E.; Wasselin, J.; Arena, C.; Salvetat, T.; Tauzin, A.; Signamarcheix, T.; Hannappel, T.
Conference Paper
2014An investigation of solar cell interconnection schemes within CPV modules using a validated temperature-dependent SPICE network model
Steiner, M.; Siefer, G.; Bett, A.W.
Journal Article
2014Next generation of wafer-bonded multi-junction solar cells
Niemeyer, M.; Klinger, V.; Dimroth, F.; Predan, F.; Fuß-Kailuweit, P.; Reinwand, D.; Lackner, D.; Wekkeli, A.; Oliva, E.; Schachtner, M.; Siefer, G.; Bett, A.W.
Conference Paper
2014Performance analysis of AZUR 3G28 triple-junction solar cells optimized for operation in Jupiter environment
Khorenko, V.; Baur, C.; Siefer, G.; Bourgoin, J.C.; Casale, M.; Campesato, R.; Duzellier, S.; Inguimbert, V.
Conference Paper
2014SOPHIA CPV module round robin: Power rating at CSOC
Steiner, M.; Siefer, G.; Baudrit, M.; Dominguez, C.; Anton, I.; Roca, F.; Fucci, R.; Pugliatti, P.M.; Stefano, A. di; Kenny, R.; Morabito, P.; Muller, M.
Conference Paper
2014SOPHIA CPV Module Round Robin: Power Rating at CSOC
Siefer, G.; Steiner, M.; Baudrit, M.; Dominguez, C.; Antón, , I.; Roca, F.; Fucci, F.; Pugliatti, P.; Stefano, A. di; Kenny, R.; Morabito, P.
Conference Paper
2014SPICE network simulation to calculate thermal runaway in III-V solar cells in CPV modules
Steiner, Marc; Siefer, Gerald; Bett, Andreas W.
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
2014Wafer Bonded 4-Junction GaInP/GaAs/GaInAsP/GaInAs Concentrator Solar Cells
Krause, R.; Piccin, M.; Munoz Rico, M.; Charles-Alfred, C.; Drazek, C.; Guiot, E.; Dimroth, F.; Bett, A.; Grave, M.; Beutel, P.; Karcher, C.; Tibbits, T.; Oliva, E.; Siefer, G.; Schachtner, M.; Wekkeli, A.; Signamarcheix, T.
Conference Paper
2014Wafer bonded four-junction GaInP/GaAa/GaInAsP/GaInAs concentrator solar cells with 44.7% efficiency
Dimroth, F.; Grave, M.; Beutel, P.; Fiedeler, U.; Karcher, C.; Tibbits, T.N.D.; Oliva, E.; Siefer, G.; Schachtner, M.; Wekkeli, A.; Bett, A.W.; Krause, R.; Piccin, M.; Drazek, C.; Guiot, E.; Ghyselen, B.; Salvetat, T.; Tauzin, A.; Signamarcheix, T.; Dobrich, A.; Hannappel, T.; Schwarzburg, K.; Blanc, N.
Journal Article
2013Development status of triple-junction solar cells optimized for low intensity low temperature applications
Baur, C.; Khorenko, V.; Siefer, G.; Bourgoin, J.C.; Casale, M.; Campesato, R.; Duzellier, S.; Inguimbert, V.
Conference Paper
2013Fabrication of GaInP/GaAs//Si solar cells by surface activated direct wafer bonding
Derendorf, K.; Essig, S.; Oliva, E.; Klinger, V.; Roesener, T.; Philipps, S.P.; Benick, J.; Hermle, M.; Schachtner, M.; Siefer, G.; Jäger, W.; Dimroth, F.
Journal Article
2013Improved grating monochromator set-up for EQE measurements of multi-junction solar cells
Siefer, G.; Gandy, T.; Schachtner, M.; Wekkeli, A.; Bett, A.W.
Conference Paper
2013InP nanowire array solar cells achieving 13.8% efficiency by exceeding the ray optics limit
Wallentin, J.; Anttu, N.; Asoli, D.; Huffman, M.; Aberg, I.; Magnusson, M.H.; Siefer, G.; Fuss-Kailuweit, P.; Dimroth, F.; Witzigmann, B.; Xu, H.Q.; Samuelson, L.; Deppert, K.; Borgström, M.T.
Journal Article
2013Modeling the thermal runaway effect in CPV modules
Steiner, M.; Siefer, G.; Bett, A.W.
Conference Paper
2013NGCPV: A new generation of concentrator photovoltaic cells, modules and systems
Datas, A.; Cristóbal, A.B.; Sala, G.; Anton, I.; Minano, J.C.; Benítez, P.; Bett, A.W.; Siefer, G.; Ekins-Daukes, N.J.; Roca, F.; Cancro, C.; Luque-Heredia, I.; Warmuth, W.; Baudrit, M.; Okada, Y.; Sugiyama, M.; Hishikawa, Y.; Takamoto, T.; Araki, K.; Fukuyama, A.; Nishioka, K.; Suzuki, H.; Kuze, N.; Moriyasu, Y.; Kita, T.; Kotagiri, A.; Kojima, N.; Marti, A.; Yamagucchi, M.; Luque, A.
Conference Paper
2013A two subcell equivalent solar cell model for III-V triple junction solar cells under spectrum and temperature variations
Fernández, E.F.; Siefer, G.; Almonacid, F.; Loureiro, A.J.G.; Pérez-Higueras, P.
Journal Article
2012CPV plants data analysis. ISFOC and NACIR projects results
Martínez, M.; Rubio, F.; Sala, G.; Pachón, D.; Bett, A.; Siefer, G.; Vetter, M.; Schies, A.; Wachtel, J.; Gombert, A.; Wüllner, J.; Díaz, V.; Vázquez, M.A.; Abulfotuh, F.; Fetyan, K.; Moussaoui, A. el; Mansouri, S.; Loudiyi, K.; Darhmaoui, H.; Mrabti, T.
Conference Paper
2012Front-side interconnected large area concentrator cells for compact concentrator modules
Wiesenfarth, M.; Steiner, M.; Helmers, H.; Siefer, G.; Oliva, E.; Dimroth, F.; Shelef, G.; Polonsky, G.; Flitsanov, Y.; Kribus, A.; Bett, A.W.
Conference Paper
2012Increasing the energy yield of CPV modules through optimized solar cell interconnection
Steiner, M.; Medvidovic, J.; Siefer, G.; Bett, A.W.
Conference Paper
2012Optoelectronic sensor for measuring direct solar radiation in e.g. parabolic trough solar power plant in roof of building, has protection window, case and housing that are arranged in optical path immediately in front of sensing element
Bett, Andreas; Siefer, Gerald; Boesch, Armin; Jaus, Joachim; Peharz, Gerhard
Patent
2012Realistic power output modeling of CPV modules
Steiner, M.; Siefer, G.; Bösch, A.; Hornung, T.; Bett, A.W.
Conference Paper
2012Spectrally resolved DNI measurements: Results of a field comparison of spectroradiometers, componentcells and the SOLIS satellite model
Gerstmaier, T.; Riesen, S. van; Schulz-Gericke, J.; Gombert, A.; Behrendt, T.; Lorenz, E.; Steiner, M.; Schachtner, M.; Siefer, G.; Bett, A.W.
Conference Paper
2012Temperature coefficients of monolithic III-V triple-junction solar cells under different spectra and irradiance levels
Fernández, E.F.; Siefer, G.; Schachtner, M.; García Loureiro, A.J.; Pérez-Higueras, P.
Conference Paper
2011Dilute Nitrides for 4- and 6-Junction Space Solar Cells
Essig, S.; Welser, E.; Rönsch, S.; Oliva, E.; Schachtner, M.; Siefer, G.; Bett, A.W.; Dimroth, F.
Conference Paper
2011Directionally selective light trapping in a germanium solar cell
Peters, M.; Ulbrich, C.; Goldschmidt, J.C.; Fernandez, J.; Siefer, G.; Bläsi, B.
Journal Article
2011The Effects of Accelerated Aging Tests on Metamorphic III-V Concentrator Solar Cells Mounted on Substrates
Eltermann, F.; Wiesenfarth, M.; Siefer, G.; Wilde, J.; Bett, A.W.
Conference Paper
2011Four-junction spectral beam-splitting photovoltaic receiver with high optical efficiency
Mitchell, B.; Peharz, G.; Siefer, G.; Peters, M.; Gandy, T.; Goldschmidt, J.C.; Benick, J.; Glunz, S.W.; Bett, A.W.; Dimroth, F.
Journal Article
2011Investigations on the temperature dependence of CPV modules equipped with triple-junction solar cell
Peharz, G.; Ferrer Rodriguez, J.P.; Siefer, G.; Bett, A.W.
Journal Article
2011A method for using CPV modules as temperature sensors and its application to rating procedures
Peharz, G.; Ferrer Rodriguez, J.P.; Siefer, G.; Bett, A.W.
Journal Article
2011Monolithic III-V triple-junction solar cells under different temperatures and spectra
Fernández, E.F.; Loureiro, A.J.G.; Higueras, P.J.P.; Siefer, G.
Conference Paper
2011A New Tool to Measure Monolithic Multi Junction Solar Cells with up to Six Subcells
Schachtner, M.; Hoheisel, R.; Sabuncuoglu, F.; Siefer, G.; Bett, A.W.; Darou, S.; Spinner, D.
Conference Paper
2011Primary Solar Cell Standards Comparison of Extraterrestrial Synhetic Calibration
Baur, C.; Siefer, G.; Kern, R.; Winter, S.
Conference Paper
2011Spectral Measurements Using Component Cells: Examinations on Measurement Precision
Jaus, J.; Mißbach, T.; Philipps, S.P.; Siefer, G.; Bett, A.W.
Conference Paper
2010Evaluation of satellite cirrus data for performance models of CPV modules
Peharz, G.; Bugliaro, L.; Siefer, G.; Bett, A.W.
Conference Paper
2010External quantum efficiency measurements of germanium bottoms subcells: Measurement artifacts and correction procedures
Siefer, G.; Baur, C.; Bett, A.W.
Conference Paper
2010III-V multijunction solar cells - from current space and terrestrial products to modern cell architectures
Meusel, M.; Bensch, W.; Fuhrmann, D.; Guter, W.; Kern, R.; Köstler, W.; Löckenhoff, R.; Strobl, G.; Kellenbenz, R.; Klinger, V.; Siefer, G.; Welser, E.; Dimroth, F.; Bett, A.W.
Conference Paper
2010Temperature coefficients of FLATCON® modules
Peharz, G.; Ferrer-Rodriguez, J.P.; Siefer, G.; Bett, A.W.
Conference Paper
2010Towards the industrialization of concentrator solar cells with efficiencies above 40%
Guter, W.; Meusel, M.; Köstler, W.; Kern, R.; Siefer, G.; Kellenbenz, R.; Dimroth, F.
Conference Paper
2009Current-matched triple-junction solar cell reaching 41.1% conversion efficiency under concentrated sunlight
Guter, W.; Schöne, J.; Philipps, S.P.; Steiner, M.; Siefer, G.; Wekkeli, A.; Welser, E.; Oliva, E.; Bett, A.W.; Dimroth, F.
Journal Article
2009Development of FLATCON® modules using secondary optics
Jaus, J.; Peharz, G.; Gombert, A.; Ferrer-Rodriguez, J.P.; Dimroth, F.; Eltermann, F.; Passig, M.; Wolf, O.; Siefer, G.; Hakenjos, A.; Riesen, S. van; Bett, A.W.
Conference Paper
2009Highest efficiency multi-junction solar cell for terrestrial and space applications
Bett, A.W.; Dimroth, F.; Guter, W.; Hoheisel, R.; Oliva, E.; Philipps, S.P.; Schöne, J.; Siefer, G.; Steiner, M.; Wekkeli, A.; Welser, E.; Meusel, M.; Köstler, W.; Strobl, G.
Conference Paper
2009Highly efficient light splitting photovoltaic receiver
Groß, B.; Peharz, G.; Siefer, G.; Peters, M.; Goldschmidt, J.C.; Steiner, M.; Guter, W.; Klinger, V.; George, B.; Dimroth, F.
Conference Paper
2009III-V multi-junction solar cells - Simulation and experimental realization
Philipps, S.P.; Guter, W.; Steiner, M.; Oliva, E.; Siefer, G.; Weiser, E.; George, B.M.; Hermle, M.; Dimroth, F.; Bett, A.W.
Journal Article
2009Metamorphic GaInP/GaInAs/Ge triple-junction solar cells with > 41 % efficiency
Dimroth, F.; Guter, W.; Schöne, J.; Welser, E.; Steiner, M.; Oliva, E.; Wekkeli, A.; Siefer, G.; Philipps, S.P.; Bett, A.W.
Conference Paper
2009A simple method for quantifying spectral impacts on multi-junction solar cells
Peharz, G.; Siefer, G.; Bett, A.W.
Journal Article
2008Development of metamorphic triple-junction solar cells for low temperature, low intensity operation in space
Dimroth, F.; Hoheisel, R.; Guter, W.; Schöne, J.; Siefer, G.; Welser, E.; Stetter, D.; Bett, A.W.
Conference Paper
2008Outdoor evaluation of FLATCON® modules and systems
Bett, A.W.; Jaus, J.; Peharz, G.; Siefer, G.; Hakenjos, A.; Heile, I.; Lerchenmüller, H.; Wüllner, J.
Conference Paper
2008Second stage reflective and refractive optics for concentrator photovoltaics
Jaus, J.; Nitz, P.; Peharz, G.; Siefer, G.; Schult, T.; Siefer, G.; Wolf, O.; Passig, M.; Gandy, T.; Bett, A.W.
Conference Paper
2008Spectrometric outdoor characterization of CPV modules using isotype monitor cells
Peharz, G.; Siefer, G.; Araki, K.; Bett, A.W.
Conference Paper
2007Development and production of European III-V multi-junction solar cells
Meusel, M.; Bensch, W.; Bergunde, T.; Kern, R.; Khorenko, V.; Köstler, W.; LaRoche, G.; Torunski, T.; Zimmermann, W.; Strobl, G.; Guter, W.; Hermle, M.; Hoheisel, R.; Siefer, G.; Welser, E.; Dimroth, F.; Bett, A.W.; Geens, W.; Baur, C.; Taylor, S.; Hey, G.
Conference Paper
2007Lattice-matched GaInAsSb on GaSb for TPV cells
Welser, E.; Dimroth, F.; Ohm, A.; Guter, W.; Siefer, G.; Philipps, S.; Schöne, J.; Polchroniadis, E.K.; Konidaris, S.; Bett, A.W.
Conference Paper
2007Measuring the spectral distribution of a flash simulator
Hohl-Ebinger, J.; Siefer, G.; Warta, W.
Conference Paper
2007Multijunction concentrator solar cells
Bett, A.W.; Dimroth, F.; Siefer, G.
Book Article
2007Non-linearity of solar cells in spectral response measurements
Hohl-Ebinger, J.; Siefer, G.; Warta, W.
Conference Paper
2007The PV-FIBRE concentrator
Anton, I.; Silva, D.; Sala, G.; Bett, A.W.; Siefer, G.; Luque-Heredia, I.; Trebst, T.
Journal Article
2007Triple-junction III-V based concentrator solar cells
Baur, C.; Bett, A.W.; Dimroth, F.; Siefer, G.; Meusel, M.; Bensch, W.; Köstler, W.; Strobl, G.
Journal Article
2006Accelerated indoor aging test procedure for concentrator modules
Siefer, G.; Bett, A.W.
Conference Paper
2006Calibration of III-V concentrator cells and modules
Siefer, G.; Bett, A.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
2006High-concentration PV using III-V solar cells
Burger, B.; Dimroth, F.; Siefer, G.; Lerchenmüller, H.
Conference Paper
2005Comparison of efficiency measurements for a HCPV module with 3J cells in 3 sites
Araki, K.; Emery, K.; Siefer, G.; Bett, A.W.; Sakakibara, T.; Kemmoku, Y.; Ekins-Daukes, N.J.; Lee, H.S.; Yamaguchi, M.
Conference Paper
2005Determination of the temperature coefficients of various III-V solar cells
Siefer, G.; Abbott, P.; Baur, C.; Schlegl, T.; Bett, A.W.
Conference Paper
2005Development of FLATCON® modules
Mohr, A.; Siefer, G.; Roth, T.; Sadchikov, N.A.; Bett, A.W.; Glunz, S.W.; Willeke, G.P.
Conference Paper
2005Experimental comparison between the power outputs of FLATCON/spl reg/ modules and silicon flat plate modules
Siefer, G.; Bett, A.W.
Conference Paper
2005The FLATCON® concentrator pv-technology ready for the market
Bett, A.W.; Siefer, G.; Baur, C.; Riesen, S.V.; Peharz, G.; Lerchenmüller, H.; Dimroth, F.
Conference Paper
2005FLATCON® Konzentrator-PV-Technologie
Lerchenmüller, H.; Bett, A.W.; Siefer, G.; Dimroth, F.; Willeke, G.
Conference Paper
2005GaSb based PV modules for a TPV generator system
Schlegl, T.; Abbott, P.; Aicher, T.; Dimroth, F.; Siefer, G.; Szolak, R.; Bett, A.W.
Conference Paper
2003Characterisation of a 300 x photovoltaic concentrator system with one- axis tracking
Hein, M.; Dimroth, F.; Siefer, G.; Bett, A.W.
Journal Article
2003Flatcon-modules. Technology and characterisation
Bett, A.W.; Baur, C.; Dimroth, F.; Lange, G.; Meusel, M.; Riesen, S. van; Siefer, G.; Andreev, V.M.; Rumyantsev, V.D.; Sadchikov, N.A.
Conference Paper
2003Measurement and comparison of the ratio, of the direct beam to normal hemispherical solar spectra, in various parts of the world
Faiman, D.; Karnieli, A.; Ninari, N.; Melnichak, V.; Karki, I.; Bett, A.W.; Siefer, G.; Borg, N. van der; Burgers, A.R.; Dunlop, E.D.
Conference Paper
2002Characterisation of a 25% high-efficiency fresnel lens module with GaInP/GaInAs dual-junction concentrator solar cells
Hein, M.; Meusel, M.; Baur, C.; Dimroth, F.; Lange, G.; Siefer, G.; Tibbits, T.N.D.; Bett, A.W.; Andreev, V.M.; Rumyantsev, V.D.
Conference Paper
2002Development of III-V-Based concentrator cells and their application in PV-modules
Bett, A.W.; Dimroth, F.; Hein, F.; Lange, G.; Meusel, M.; Schubert, U.; Siefer, G.
Conference Paper
2002Development of III-V-based concentrator solar cells and their application in PV-modules
Bett, A.W.; Dimroth, F.; Hein, M.; Lange, G.; Meusel, M.; Schubert, U.; Siefer, G.
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
2001Characterisation of a high concentration system with one-axis-tracking
Hein, M.; Bett, A.W.; Dimroth, F.; Siefer, G.
Conference Paper
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