Fraunhofer-Gesellschaft

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Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.
202168.9% Efficient GaAs-Based Photonic Power Conversion Enabled by Photon Recycling and Optical Resonance
Helmers, H.; Lopez, E.; Höhn, O.; Lackner, D.; Schön, J.; Schauerte, M.; Schachtner, M.; Dimroth, F.; Bett, A.W.
Zeitschriftenaufsatz
2021Integrated series/parallel connection for photovoltaic laser power converters with optimized current matching
Wagner, L.; Reichmuth, S.K.; Philipps, S.P.; Oliva, E.; Bett, A.W.; Helmers, H.
Zeitschriftenaufsatz
2021Pushing the Boundaries of Photovoltaic Light to Electricity Conversion: A GaAs Based Photonic Power Converter with 68.9% Efficiency
Helmers, H.; Lopez, E.; Höhn, O.; Lackner, D.; Schön, J.; Schauerte, M.; Schachtner, M.; Dimroth, F.; Bett, A.W.
Konferenzbeitrag
2019Comprehensive Electrical Loss Analysis of Monolithic Interconnected Multi-Segment Laser Power Converters
Kimovec, R.; Helmers, H.; Bett, A.W.; Topic, M.
Zeitschriftenaufsatz
2017Multi-segment photovoltaic laser power converters and their electrical losses
Kimovec, R.; Helmers, H.; Bett, A.W.; Topic, M.
Konferenzbeitrag
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.
Zeitschriftenaufsatz
2017Performance and failure analysis of concentrator solar cells after intensive stressing with thermal, electrical, and combined load
Eltermann, F.; Ziegler, L.; Wiesenfarth, M.; Wilde, J.; Bett, A.W.
Konferenzbeitrag
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.
Vortrag
2017Uncertainty estimation of spectral matching ratio based power rating of CPV modules
Steiner, M.; Siefer, G.; Bett, A.W.
Konferenzbeitrag
2016CPVMatch - concentrating photovoltaic modules using advanced technologies and cells for highest efficiencies
Philipps, S.P.; Baudrit, M.; Hillerich, K.; Moreau, V.; Parmesani, R.; Román, E.; Sala, G.; Schineller, B.; Timo, G.; Bett, A.W.
Konferenzbeitrag
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.
Konferenzbeitrag
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.
Konferenzbeitrag
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.
Zeitschriftenaufsatz
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.
Konferenzbeitrag
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.
Konferenzbeitrag
2015Investigations on AlxGa1-xAs solar cells grown by MOVPE
Heckelmann, S.; Lackner, D.; Karcher, C.; Dimroth, F.; Bett, A.W.
Zeitschriftenaufsatz
2015Low temperature effects in photovoltaic devices for deep space missions
Hoheisel, R.; Walters, R.J.; Bett, A.W.
Konferenzbeitrag
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.
Konferenzbeitrag
2015Photoluminescence-based current-voltage characterisation of individual subcells in multi-junction devices
Alsonso-Álvarez, D.; Lackner, D.; Philipps, S.P.; Bett, A.W.; Ekins-Daukes, N.J.
Konferenzbeitrag
2015Quantum efficiency measurement of concentrator photovoltaic modules
Mundus, M.; Rapp, C.; Missbach, T.; Siefer, G.; Hohl-Ebinger, J.; Bett, A.W.; Warta, W.
Konferenzbeitrag
2014Development and Investigation of a CPV Module with Cassegrain Mirror Optics
Dreger, M.; Wiesenfarth, M.; Kisser, A.; Schmid, T.; Bett, A.W.
Konferenzbeitrag
2014Investigation of Different Fresnel Lens Designs and Methods to Determine the Optical Efficiency
Wiesenfarth, M.; Steiner, M.; Wolf, J.; Schmidt, T.; Bett, A.W.
Konferenzbeitrag
2013Analysis of high concentration passively cooled CPV module designs using mirror optics
Dreger, M.; Wiesenfarth, M.; Schmid, T.; Bett, A.W.
Konferenzbeitrag
2013Efficiency of dense-array CPVT module with front-side interconnected cells
Polonsky, G.; Shelef, G.; Flitsanov, Y.; Wiesenfarth, M.; Steiner, M.; Helmers, H.; Bett, A.W.; Kribus, A.
Konferenzbeitrag
2013Electroluminescence and photoluminescence characterization of multijunction solar cells
Nesswetter, H.; Lugli, P.; Bett, A.W.; Zimmermann, C.G.
Zeitschriftenaufsatz
2013Fast atom beam-activated n-Si/n-GaAs wafer bonding with high interfacial transparency and electrical conductivity
Essig, S.; Moutanabbir, O.; Wekkeli, A.; Nahme, H.; Oliva, E.; Bett, A.W.; Dimroth, F.
Zeitschriftenaufsatz
2013III-V multi-junction solar cells: Market, technological status and research trends
Philipps, S.P.; Bett, A.W.
Konferenzbeitrag
2013Improved grating monochromator set-up for EQE measurements of multi-junction solar cells
Siefer, G.; Gandy, T.; Schachtner, M.; Wekkeli, A.; Bett, A.W.
Konferenzbeitrag
2013Investigations on 3-dimensional temperature distribution in a FLATCON-type CPV module
Wiesenfarth, M.; Gamisch, S.; Kraus, H.; Bett, A.W.
Konferenzbeitrag
2013Investigations on the influence of temperature and concentration on solar cell performances
Helmers, H.; Schachtner, M.; Bett, A.W.
Konferenzbeitrag
2013Modeling the thermal runaway effect in CPV modules
Steiner, M.; Siefer, G.; Bett, A.W.
Konferenzbeitrag
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.; Yamaguchi, M.; Luque, A.
Konferenzbeitrag
2013Overview about technology perspectives for high efficiency solar cells for space and terrestrial applications
Bett, A.W.; Philipps, S.P.; Essig, S.; Heckelmann, S.; Kellenbenz, R.; Klinger, V.; Niemeyer, M.; Lackner, D.; Dimroth, F.
Konferenzbeitrag
2012Advanced concepts in concentrating photovoltaics (CPV)
Wiesenfarth, M.; Helmers, H.; Philipps, S.P.; Steiner, M.; Bett, A.W.
Konferenzbeitrag
2012Concentrix solar's progress in developing highly efficient modules
Riesen, S. van; Gombert, A.; Gerster, E.; Gerstmaier, T.; Jaus, J.; Eltermann, F.; Bett, A.W.
Konferenzbeitrag
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.
Konferenzbeitrag
2012Realistic power output modeling of CPV modules
Steiner, M.; Siefer, G.; Bösch, A.; Hornung, T.; Bett, A.W.
Konferenzbeitrag
2012A validated SPICE network simulation study on improving tunnel diodes by introducing lateral conduction layers
Steiner, M.; Guter, W.; Peharz, G.; Philipps, S.P.; Dimroth, F.; Bett, A.W.
Zeitschriftenaufsatz
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.
Konferenzbeitrag
2011Electroluminescence Exposes Individual Performances in Multi-Junction Cells
Hoheisel, R.; Rönsch, S.; Dimroth, F.; Bett, A.W.; Nesswetter, H.; Zimmermann, C.G.
Zeitschriftenaufsatz
2011An experimental and theoretical study on the temperature dependence of GaAs solar cells
Philipps, S.P.; Hoheisel, R.; Gandy, T.; Stetter, D.; Hermle, M.; Dimroth, F.; Bett, A.W.
Konferenzbeitrag
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.
Konferenzbeitrag
2011Spectral Measurements Using Component Cells: Examinations on Measurement Precision
Jaus, J.; Mißbach, T.; Philipps, S.P.; Siefer, G.; Bett, A.W.
Konferenzbeitrag
2011Updating the European Strategic Research Agenda
Pearsall, N.; Bett, A.W.; Bonemazzi, F.; Dimmler, B.; Glunz, S.; Poortmans, J.; Strauss, P.
Konferenzbeitrag
2010Development of radiation hard Ga0.50In0.50P/Ga0.99In0.01As/Ge space solar cells with multi quantum wells
Kellenbenz, R.; Hoheisel, R.; Kailuweit, P.; Guter, W.; Dimroth, F.; Bett, A.W.
Konferenzbeitrag
2010Development, cost reduction and customized design of industrial concentrator solar cells with efficiencies approaching 40% and above
Guter, W.; Bensch, W.; Kern, R.; Köstler, W.; Meusel, M.; Strobl, G.; Riesen, S. van; Gerstmaier, T.; Gombert, A.; Dimroth, F.; Bett, A.W.
Konferenzbeitrag
2010External quantum efficiency measurements of germanium bottoms subcells: Measurement artifacts and correction procedures
Siefer, G.; Baur, C.; Bett, A.W.
Konferenzbeitrag
2010Feasibility study on high concentrating photovoltaic power towers
Frohberger, D.; Jaus, J.; Wiesenfarth, M.; Schramek, P.; Bett, A.W.
Konferenzbeitrag
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.
Konferenzbeitrag
2010Investigations on interconnection technologies for CPV systems
Wiesenfarth, M.; Thaller, S.; Jaus, J.; Eltermann, F.; Passig, M.; Bett, A.W.
Konferenzbeitrag
2010Modeling of the degradation of III-V triple-junction cells due to particle irradiation on the basis of component cells
Baur, C.; Bett, A.W.
Konferenzbeitrag
2010MOVPE growth of III-V solar cells on silicon in 300 mm closed coupled showerhead reactor
Roesener, T.; Döscher, H.; Beyer, A.; Brückner, S.; Klinger, V.; Wekkeli, A.; Kleinschmidt, P.; Jurecka, C.; Ohlmann, J.; Volz, K.; Stolz, W.; Hannappel, T.; Bett, A.W.; Dimroth, F.
Konferenzbeitrag
2010Promises of advanced multi-junction solar cells for the use in CPV systems
Dimroth, F.; Philipps, S.P.; Peharz, G.; Welser, E.; Kellenbenz, R.; Roesener, T.; Klinger, V.; Oliva, E.; Steiner, M.; Meusel, M.; Guter, W.; Bett, A.W.
Konferenzbeitrag
2010Temperature coefficients of FLATCON® modules
Peharz, G.; Ferrer-Rodriguez, J.P.; Siefer, G.; Bett, A.W.
Konferenzbeitrag
2009Developing large and efficient fluorescent concentrator systems
Goldschmidt, J.C.; Peters, M.; Dimroth, F.; Bett, A.W.; Steidl, L.; Zentel, R.; Hermle, M.; Glunz, S.W.; Willeke, G.
Konferenzbeitrag
2009Front contact grid optimization of III-V solar cells with SPICE network simulation
Steiner, M.; Philipps, S.P.; Hermle, M.; Bett, A.W.; Dimroth, F.
Konferenzbeitrag
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.
Zeitschriftenaufsatz
2008Characterization and numerical modeling of the temperature-dependent behavior of GaAs solar cells
Philipps, S.P.; Stetter, D.; Hoheisel, R.; Hermle, M.; Dimroth, F.; Bett, A.W.
Konferenzbeitrag
2008Characterizing GaInP/GaInAs/Ge multijunction solar cells with electroluminescence
Kirchartz, T.; Helbig, A.; Hermle, M.; Rau, U.; Bett, A.W.
Konferenzbeitrag
2008Numerical simulation and modeling of III-V multi-junction solar cells
Philipps, S.P.; Hermle, M.; Letay, G.; Guter, W.; George, B.M.; Dimroth, F.; Bett, A.W.
Konferenzbeitrag
2008Silicon 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.
Konferenzbeitrag
2006Simulation of the tunnelling current in heavily doped pn-junctions
Mack, B.; Hermle, M.; Philipps, S.; Bett, A.W.
Konferenzbeitrag
2003Silicon concentrator cells designed for a direct mounting on compound parabolic concentrator
Mohr, A.; Steuder, M.; Bett, A.W.; Glunz, S.W.
Konferenzbeitrag
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.
Konferenzbeitrag
2002GaAs photovoltaic cells for laser power beaming at high power densities
Riesen, S. van; Schubert, U.; Bett, A.W.
Konferenzbeitrag