Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.
20184-terminal CPV module capable of converting global normal irradiance into electricity
Martínez, Juan F.; Steiner, Marc; Wiesenfarth, Maike; Dimroth, Frank
Conference Paper
2018Analysis of the performance of an on-axis mirror module design compared to a FLATCON module
Wiesenfarth, Maike; Gamisch, Sebastian; Jakob, Peter; Steiner, Marc; Bett, Andreas
Conference Paper
2018Challenges in the Design of Concentrator Photovoltaic (CPV) Modules to Achieve Highest Efficiencies
Wiesenfarth, M.; Anton, I.; Bett, A.W.
Journal Article
2018Combining photon recycling and concentrated illumination in a GaAs heterojunction solar cell
Schilling, C.; Höhn, O.; Micha, D.N.; Heckelmann, S.; Klinger, V.; Oliva, E.; Glunz, S.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
2018Direct growth of III–V/silicon triple-junction solar cells with 19.7% efficiency
Feifel, Markus; Ohlmann, Jens; Benick, Jan; Hermle, Martin; Belz, Jürgen; Beyer, Andreas; Volz, Kerstin; Hannappel, Thomas; Bett, Andreas W.; Lackner, David; Dimroth, Frank
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
2018Extracting nonradiative parameters in III-V semiconductors using double-heterostructures on active p-n junctions
Walker, Alexandre W.; Schön, Jonas; Dimroth, Frank
Journal Article
2018Hall characterization of epitaxial GaSb and AlGaAsSb layers using p-n junctions on GaSb substrates
Predan, F.; Ohlmann, J.; Mrabet, S.; Dimroth, F.; Lackner, D.
Journal Article
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
2018On the influence of the photo-induced leakage current in monolithically interconnected modules
Kimovec, R.; Helmers, H.; Bett, A.W.; Topic, M.
Journal Article
2018Optimization of GaAs solar cell performance and growth efficiency at MOVPE growth rates of 100 μm/h
Lang, Robin; Schön, Jonas; Dimroth, Frank; Lackner, David
Journal Article
2018Optische Leistungsversorgung für Sensorsysteme mittels photovoltaischer Laserleistungszellen
Helmers, H.
Presentation
2018Potential analysis of a rear-side passivation for multi-junction space solar cells based on germanium substrates
Weiss, Charlotte; Schön, Jonas; Höhn, Oliver; Mohr, Christian; Kurstjens, Rufi; Boizot, Bruno; Janz, Stefan
Conference Paper
2018Power loss mechanisms in small area monolithic-interconnected photovoltaic modules
Kimovec, R.; Helmers, H.; Bett, A.W.; Topic, M.
Journal Article
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
2017Amorphous silicon carbide rear-side passivation and reflector layer stacks for multi-junction space solar cells based on germanium sustrates
Janz, Stefan; Weiss, Charlotte; Mohr, Christian; Kurstjens, Rufi; Boizot, Bruno; Fuhrmann, Bianca; Khorenko, Victor
Conference Paper
2017Concentrating photovoltaic systems
Steiner, M.; Gerstmaier, T.; Bett, A.W.
Book Article
2017Effects of thermal annealing on structural and electrical properties of surface-activated n-GaSb/n-GaInP direct wafer bonds
Predan, F.; Kovacs, A.; Ohlmann, J.; Lackner, D.; Dunin-Borkowsi, R.E.; Dimroth, F.; Jäger, W.
Journal Article
2017An end of service life assessment of PMMA lenses from veteran concentrator photovoltaic systems
Miller, D.C.; Khonkar, H.I.; Herrero, R.; Anton, I.; Johnson, D.K.; Hornung, T.; Schmid-Schirling, T.; Vinzant, T.B.; Deutch, S.; To, B.; Sala, G.; Kurtz, S.R.
Journal Article
2017GaInP/AlGaAs metal-wrap-through tandem concentrator solar cells
Oliva, E.; Salvetat, T.; Jany, C.; Thibon, R.; Helmers, H.; Steiner, M.; Schachtner, M.; Beutel, P.; Klinger, V.; Moulet, J.-S.; Dimroth, F.
Journal Article, Conference Paper
2017High-temperature electric contacts for AlGaInP/GaInP photon-enhanced thermionic emisson cathodes
Girolami, M.; Bellucci, A.; Calvani, P.; Dimroth, F.; Trucchi, D.
Journal Article
2017III-V solar cells - materials, multi-junction cells - cell design and performance
Dimroth, F.
Book Article
2017Material quality frontiers of MOVPE grown AIGaAs for minority carrier devices
Heckelmann, S.; Lackner, D.; Dimroth, F.; Bett, A.W.
Journal Article, Conference Paper
2017Mesa Separation of GaInP Solar Cells by Picosecond Laser Ablation
Weber, J.; Klinger, V.; Brand, A.; Gutscher, S.; Wekkeli, A.; Mondon, A.; Oliva, E.; Dimroth, F.
Journal Article
2017Minority carrier diffusion length, lifetime and mobility in p-type GaAs and GaInAs
Niemeyer, Markus; Ohlmann, Jens; Walker, Alexandre; Kleinschmidt, Peter; Lang, Robin; Hannappel, Thomas; Dimroth, Frank; Lackner, David
Journal Article
2017Monolithic two-terminal III-V//Si triple-junction solar cells with 30.2% efficiency under 1-Sun AM1.5g
Cariou, R.; Benick, J.; Beutel, P.; Razek, N.; Flötgen, C.; Hermle, M.; Lackner, D.; Glunz, S.W.; Bett, A.W.; Wimplinger, M.; Dimroth, F.
Journal Article
2017Multi-segment photovoltaic laser power converters and their electrical losses
Kimovec, R.; Helmers, H.; Bett, A.W.; Topic, M.
Conference Paper
2017On the alignment tolerance of photovoltaic laser power converters
Wagner, L.; Bett, A.W.; Helmers, H.
Journal Article
2017On the benchmarking of multi-junction photoelectrochemical fuel generating devices
May, M.M.; Lackner, D.; Ohlmann, J.; Dimroth, F.; Krol, R. van de; Hannappel, T.; Schwarzburg, K.
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
2017Optical analysis of a III-V-nanowire-array-on-Si dual junction solar cell
Chen, Yang; Höhn, Oliver; Tucher, Nico; Pistol, Mats-Erik; Anttu, Nicklas
Journal Article
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.
Conference Paper
2017Power loss mechanisms in monolithic-interconnected six-segment laser power converter
Kimovec, R.; Helmers, H.; Bett, A.W.; Topic, M.
Presentation
2017Progress in R&D on CPV cells and modules for highest efficiencies within the EU-funded project CPVMatch
Philipps, S.; Baudrit, M.; Grange, F.; Hillerich, K.; Parmesani, R.; Román, E.
Presentation
2017Radiation hardness of AlGaAs n-i-p solar cells with higher bandgap intrinsic region
Walker, A.; Heckelmann, S.; Tibbits, T.; Lackner, D.; Bett, A.W.; Dimroth, F.
Journal Article
2017Reliable and lightning-safe monitoring of wind turbine rotor blades using optically powered sensors
Worms, K.; Klamouris, C.; Wegh, F.; Meder, L.; Volkmer, D.; Philipps, S.P.; Reichmuth, S.K.; Helmers, H.; Kunadt, A.; Vourvoulakis, J.; Bett, A.W.; Koos, C.; Freude, W.; Leuthold, J.; Stork, 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
2017The role of draft facets in temperature effects in silicone-on-glass Fresnel lens applications
Jakob, P.; Nitz, P.
Conference Paper
2017Subcell characterization in multijunction solar cells using pulsed light
Rutzinger, M.; Salzberger, M.; Nesswetter, H.; Lackner, D.; Bett, A.W.; Lugli, P.; Zimmermann, C.G.
Journal Article
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-T Mirror Dish System Combined with Water Desalination Systems
Wiesenfarth, M.; Went, J.; Bösch, A.; Dilger, A.; Kec, T.; Kroll, A.; Koschikowsi, J.; Bett, A.W.
Conference Paper
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.
Conference Paper
2016CPVMatch - Concentrating Photovoltaic modules using advanced technologies and cells for highest efficiencies
Philipps, S.P.; Baudrid, M.; Hillerich, K.; Moreau, V.; Parmesani, R.; Sala, G.; Schineller, B.; Bett, A.W.
Presentation
2016Determination of subcell open circuit voltages and Iph–Voc curves in multijunction solar cells by sequentially pulsed, monochromatic illumination
Rutzinger, M.; Nesswetter, H.; Lugli, P.; Bett, A.W.; Zimmermann, C.G.
Journal Article
2016Determining the optimal laser wavelength for laser power conversion depending on operation temperature
Höhn, O.; Walker, A.W.; Bett, A.W.; Helmers, H.
Conference Paper
2016Direct wafer bonding of highly conductive GaSb/GaInAs and GaSb/GaInP heterojunctions prepared by argon-beam surface activation
Predan, F.; Reinwand, D.; Cariou, R.; Niemeyer, M.; Dimroth, F.
Journal Article
2016Forschungstrends bei den Photovoltaik-Technologien
Rech, B.; Albrecht, S.; Brendel, R.; Peibst, R.; Schmidt, J.; Glunz, S.W.; Bett, A.; Rau, U.; Kirchartz, T.; Camus, C.; Egelhaaf, H.-J.; Baumann, A.; Powalla, M.
Presentation
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
2016Gallium phosphide window layer for silicon solar cells
Feifel, M.; Rachow, T.; Benick, J.; Ohlmann, J.; Janz, S.; Hermle, M.; Dimroth, F.; Lackner, D.
Journal Article
2016High Efficiency GaInP/GaAs Tandem Wafer Bonded Solar Cell on Silicon
Cariou, R.; Benick, J.; Dimroth, F.
Presentation
2016Highly efficient solar hydrogen generation - an integrated concept with III-V solar cells and PEM electrolysis cells
Fallisch, A.; Förster, P.; Ohlmann, J.; Smolinka, T.; Zedda, M.
Presentation
2016III-V multi-junction Metal-Wrap-Through (MWT) concentrator solar cells
Oliva, E.; Salvetat, T.; Jany, C.; Thibon, R.; Helmers, H.; Steiner, M.; Schachtner, M.; Beutel, P.; Klinger, V.; Moulet, J.; Dimroth, F.
Conference Paper
2016Improved in situ performance testing of line-concentrating solar collectors: Comprehensive uncertainty analysis for the selection of measurement instrumentation
Zirkel-Hofer, A.; Perry, S.; Fahr, S.; Kramer, K.; Heimsath, A.; Scholl, S.; Platzer, W.
Journal Article
2016Influence of injection current and temperature on electroluminescence of GaAs laser power converters
Kimovec, R.; Helmers, H.; Bett, A.W.; Topic, M.
Presentation
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
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
2016Minority carrier recombination of ordered Ga0.51In0.49P at high temperatures
Dagan, R.; Rosenwaks, Y.; Kribus, A.; Walker, A.; Ohlmann, J.; Dimroth, F.
Journal Article
2016Nanoparticle Scattering for Multijunction Solar Cells: The Tradeoff between Absorption Enhancement and Transmission Loss
Mellor, A.; Hylton, N.P.; Hauser, H.; Thomas, T.; Lee, K.-H.; Al-Saleh, Y.; Giannini, V.; Braun, A.; Loo, J.; Vercruysse, D.; Van Dorpe, P.; Blasi, B.; Maier, S.A.; Ekins-Daukes, N.J.
Journal Article
2016Nonradiative lifetime extraction using power-dependent relative photoluminescense of III-V semiconductor double-heterostructures
Walker, A.W.; Heckelmann, S.; Karcher, C.; Höhn, O.; Went, C.; Niemeyer, M.; Bett, A.W.; Lackner, D.
Journal Article
2016Optical power supply of smart sensors using photovoltaic laser power converters
Helmers, H.
Presentation
2016Optimal laser wavelength for efficient laser power converter operation over temperature
Höhn, O.; Walker, A.W.; Bett, A.W.; Helmers, H.
Journal Article
2016Photovoltaic laser power converters for wireless optical power supply of sensor systems
Helmers, H.; Bett, A.W.
Conference Paper
2016Photovoltaics with Highest Efficiencies
Bett, A.
Presentation
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
2016Recent Development in Direct Generation of Hydrogen Using Multi-Junction Solar Cells
Ohlmann, J.; Martínez, Juan F.; Lackner, D.; Förster, P.; Steiner, M.; Fallisch, A.; Dimroth, F.
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
2016Slope-deviation measurement of Fresnel-shaped mold surfaces
Kiefel, P.; Hornung, T.; Nitz, P.; Reinecke, H.
Journal Article
2016Spatial and spectral electroluminescence for single-junction single-segment GaAs laser power converter characterization
Kimovec, R.; Helmers, H.; Bett, A.W.; Topic, M.
Presentation
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 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
2015Calibration function for an experimental setup for the measurement of irradiance distributions via a transmitting diffuser
Schmid, T.; Hornung, T.; Nitz, P.
Journal Article
2015Challenges and perspectives of CPV technology
Bett, A.W.
Presentation
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
2015Development of nanoimprint processes for photovoltaic applications
Hauser, H.; Tucher, N.; Tokai, K.; Schneider, P.; Wellens, C.; Volk, A.; Seitz, S.; Benick, J.; Barke, S.; Dimroth, F.; Müller, C.; Glinsner, T.; Bläsi, B.
Journal Article
2015Development of NIL processes for PV applications
Hauser, H.; Tucher, N.; Tokai, K.; Schneider, P.; Wellens, C.; Volk, A.; Barke, S.; Müller, C.; Glinsner, T.; Bläsi, B.
Conference Paper
2015The distance temperature map as method to analyze optical properties of Fresnel lenses and their interaction with multi-junction solar cells
Hornung, T.; Kiefel, P.; Nitz, P.
Conference Paper
2015Effects of angular confinement and concentration to realistic solar cells
Höhn, O.; Kraus, T.; Schwarz, U.T.; Bläsi, B.
Journal Article
2015Efficient direct solar-to-hydrogen conversion by in situ interface transformation of a tandem structure
May, M.M.; Lewerenz, H.J.; Lackner, D.; Dimroth, F.; Hannappel, T.
Journal Article
2015Energy level of the Si-related DX-center in (AlyGa1-y)1-xInxAs
Heckelmann, S.; Lackner, D.; Bett, A.W.
Journal Article
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
2015Frequency division multiple-based light spectroscopy
Mißbach, T.; Karcher, C.; Siefer, G.; Bett, A.W.
Journal Article
2015A high-efficiency hybrid high-concentration photovoltaic system
Zimmermann, S.; Helmers, H.; Tiwari, M.K.; Paredes, S.; Michel, B.; Wiesenfarth, M.; Bett, A.W.; Poulikakos, D.
Journal Article
2015Impact of Photon Recycling and Luminescence Coupling in III-V Photovoltaic Devices
Walker, A.; Höhn, O.; Micha, D.; Wagner, L.; Helmers, H.; Dimroth, F.; Bett, A.
Conference Paper
2015Investigations on AlxGa1-xAs solar cells grown by MOVPE
Heckelmann, S.; Lackner, D.; Karcher, C.; Dimroth, F.; Bett, A.W.
Journal Article
2015Low temperature effects in photovoltaic devices for deep space missions
Hoheisel, R.; Walters, R.J.; Bett, A.W.
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
2015Pathway and technologies for the transformation of the energy system
Bett, A.W.; Henning, H.-M.
Presentation
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.
Conference Paper
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
2015Research strategies to approach the 50% efficiency barrier with multi-junction solar cells
Bett, A.W.
Presentation
2015Silicone on glass fresnel lenses
Hornung, T.
Book Article
2015Solarenergie zur Stromerzeugung
Kiefer, K.
Book Article
2015Specularity of concentrator mirrors for CPV measured with VLABS
Schmid, T.; Heimsath, A.; Hornung, T.; Nitz, 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
2015Technical analysis and optimization of a high concentrating photovoltaic power tower
Ordóñez Moreno, K.; Heimsath, A.; Wiesenfahrt, M.; Schöttl, P.; Nitz, P.
Conference Paper
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
2015Transparent and electrically conductive GaSb/Si direct wafer bonding at low temperatures by argon-beam surface activation
Predan, F.; Reinwand, D.; Klinger, V.; Dimroth, F.
Journal Article
2015Wafer-bonded GaInP/GaAs//Si solar cells with 30% efficiency under concentrated sunlight
Essig, S.; Benick, J.; Schachtner, M.; Wekkeli, A.; Hermle, M.; Dimroth, F.
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
2014Analytical modeling of industrial-related silicon solar cells
Fellmeth, T.; Clement, F.; Biro, D.
Journal Article
2014Challenges for Thermal Management and Production Technologies in Conchotovoltaic (CPV) Modules
Wiesenfarth, M.; Gamisch, S.; Dörsam, T.; Bett, A.W.
Conference Paper
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
2014CPV - Technology: Status and Market Perspectives
Bett, A.W.
Presentation
2014Development and Investigation of a CPV Module with Cassegrain Mirror Optics
Dreger, M.; Wiesenfarth, M.; Kisser, A.; Schmid, T.; Bett, A.W.
Conference Paper
2014High-Efficiency - A Key for CPV
Bett, A.W.
Presentation
2014Highly Efficient Multi-junction Solar Cells
Bett, A.
Presentation
2014Hot-carrier solar cell spectral insensitivity: Why develop the hot-carrier solar cell when we have multi-junction devices
Hirst, Louise C.; Lumb, Matthew P.; Hoheisel, Raymond; Philipps, Simon P.; Bett, Andreas W.; Walters, Robert J.
Conference Paper
2014III-V multi-junction solar cells
Philipps, S.P.; Bett, A.W.
Book Article
2014III-V multi-junction solar cells and concentrating photovoltaic (CPV) systems
Philipps, S.P.; Bett, A.W.
Journal Article
2014III-V Solarzellen für die optische Leistungsübertragung
Helmers, Henning
Presentation
2014InGaAs/GaAsP strain balanced multi-quantum wires grown on misoriented GaAs substrates for high efficiency solar cells
Alonso-Álvarez, D.; Thomas, T.; Führer, M.; Hylton, N.P.; Ekins-Daukes, N.; Lackner, D.; Philipps, S.P.; Bett, A.W.; Sodabanlu, H.; Fujii, H.; Watanabe, K.; Sugiyama, M.; Nasi, L.; Campanini, M.
Journal Article
2014Investigation of Different Fresnel Lens Designs and Methods to Determine the Optical Efficiency
Wiesenfarth, M.; Steiner, M.; Wolf, J.; Schmidt, T.; Bett, A.W.
Conference Paper
2014Light diffraction by concentrator Fresnel lenses
Hornung, T.; Nitz, P.
Journal Article
2014Lightning-Safe Monitoring of Wind Turbine Rotor Blades Using Optically Powered Sensors
Worms, K.; Klamouris, C.; Wegh, F.; Meder, L.; Volkmer, D.; Phillips, S.; Reichmuth, S.; Helmers, H.; Bett, A.W.; Vourvoulakis, J.; Freude, W.; Leuthold, J.; Stork, W.
Conference Paper
2014A Low Concentration Receiver Concept for Cost Effective Crystalline Back Contact Cells
Ebert, M.; Dörsam, T.; Fellmeth, T.; Hädrich, I.; Eitner, U.; Biro, D.; Wiesenfarth, M.; Noriega, P.; Caparros, S.; Castano, F.
Conference Paper
2014Mass Manufactured Secondary Optics for CPV
Schmid, T.; Wiesenfarth, M.; Bösch, A.; Hornung, T.; Gremmelspacher, M.; Manns, P.
Conference Paper
2014Measurement of small angle ray deviations for concentrating solar applications: Circumsolar radiation and mirror beam spread
Nitz, P.; Schmid, T.; Schmidt, T.; Hornung, T.; Heimsath, A.
Conference Paper
2014Monochromatic Collimated Light Source for an Indoor Lens Efficiency Tester
Kiefel, P.; Leipersberger, A.; Schmidt, T.; Hornung, T.
Conference Paper
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
2014Optical Loss Due to Diffraction by Concentrator Fresnel Lenses
Hornung, T.; Nitz, P.
Conference Paper
2014The photonic solar cell. System design and efficiency estimations
Höhn, O.; Kraus, T.; Schwarz, U.T.; Bläsi, B.
Conference Paper
2014Photovoltaic cells for optical power and data transmission
Helmers, H.; Philipps, S.P.; Reichmuth, S.K.; Oliva, E.; Lackner, D.; Bett, A.W.
Presentation
2014Photovoltaic cells for optical power and data transmission
Helmers, H.
Presentation
2014Power by light: Optical power transmission replaces copper wiring
Henning, H.
Journal Article
2014Preliminary Temperature Accelerated Life Test (ALT) On Lattice Mismatched Triple-Junction Concentrator
Orlando, V.; Espinet, P.; Nunez, N.; Contreras, Y.; Bautista, J.; Vázquez, M.; Algora, C.; Eltermann, F.; Bett, A.W.
Conference Paper
2014The promise of III-V high-efficiency solar cells
Bett, A.W.
Presentation
2014PVShade® - Winkelselektive Photovoltaik-Verglasung: Funktionales Fassadendesign mit hochwertiger Optik
Wilson, H.; Fath, K.; Sprenger, W.; Kuhn, T.E.
Journal Article
2014Scientific System for High-resolution Measurement of the Circumsolar Radiation
Schrott, S.; Schmidt, T.; Hornung, T.; Nitz, P.
Conference Paper
2014Similarities and Differences between Terrestrial CPV and Space Multi-Junction Solar Cells
Bett, A.W.
Presentation
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
2014Spectral sensitivity of hot carrier solar cells
Hirst, L.C.; Lumb, M.P.; Hoheisel, R.; Philipps, S.P.; Bett, A.W.; Walters, R.J.; Bailey, C.G.
Journal Article
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
2013Aberration-corrected transmission electron microscopy analyses of GaAs/Si interfaces in wafer-bonded multi-junction solar cells
Häussler, D.; Houben, L.; Essig, S.; Kurttepeli, M.; Dimroth, F.; Dunin-Borkowski, R.E.; Jäger, W.
Journal Article
2013Advanced liquid cooling in HCPVT systems to achieve higher energy efficiencies
Zimmermann, S.; Helmers, H.; Tiwari, M.K.; Escher, W.; Paredes, S.; Neves, P.; Poulikakos, D.; Wiesenfarth, M.; Bett, A.W.; Michel, B.
Conference Paper
2013Analysis of high concentration passively cooled CPV module designs using mirror optics
Dreger, M.; Wiesenfarth, M.; Schmid, T.; Bett, A.W.
Conference Paper
2013Bandgap determination based on electrical quantum efficiency
Helmers, H.; Karcher, C.; Bett, A.W.
Journal Article
2013Conceptual product development with integrated concentrating PV systems - CPV in the built environment from a designer's perspective
Reinders, A.; Wiesenfarth, M.; King, R.R.
Conference Paper
2013Defect formation and strain relaxation in graded GaPAs/GaAs, GaNAs/GaAs and GaInNAs/Ge buffer systems for high-efficiency solar cells
Schöne, J.; Spiecker, E.; Dimroth, F.; Bett, A.W.; Jäger, W.
Journal Article, Conference Paper
2013Design criteria for robust and secure next generation CPV control systems
Benoit, P.; Fey, S.; Rohbogner, G.; Kohrs, R.; Wittwer, C.; Georg, D.; Wüllner, J.; Gombert, A.
Conference Paper
2013Determination of hardness and Young's modulus for important III-V compound semiconductors
Klinger, V.; Roesener, T.; Lorenz, G.; Petzold, M.; Dimroth, F.
Journal Article
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.
Conference Paper
2013Electroluminescence analysis of irradiated GaInP/GaInAs/Ge space solar cells
Hoheisel, R.; Dimroth, F.; Bett, A.W.; Messenger, S.R.; Jenkins, P.P.; Walters, R.J.
Conference Paper, Journal Article
2013Electroluminescence and photoluminescence characterization of multijunction solar cells
Nesswetter, H.; Lugli, P.; Bett, A.W.; Zimmermann, C.G.
Journal Article
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
2013Fast atom beam activated wafer bonds between n-Si and n-GaAs with low resistance
Essig, S.; Dimroth, F.
Journal Article
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.
Journal Article
2013GaAs solar cells close to the thermodynamic limit
Höhn, O.; Kraus, T.; Bauhuis, G.; Schwarz, U.T.; Bläsi, B.
Conference Paper
2013III-V multi-junction solar cells: Market, technological status and research trends
Philipps, S.P.; Bett, A.W.
Conference Paper
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
2013Indoor characterization of reflective concentrator optics
Schmid, T.; Frick, M.; Hornung, T.; Nitz, P.
Conference Paper
2013Influence of temperature and irradiance on triple-junction solar subcells
Helmers, H.; Schachtner, M.; Bett, A.W.
Journal Article
2013Investigations on 3-dimensional temperature distribution in a FLATCON-type CPV module
Wiesenfarth, M.; Gamisch, S.; Kraus, H.; Bett, A.W.
Conference Paper
2013Investigations on the influence of temperature and concentration on solar cell performances
Helmers, H.; Schachtner, M.; Bett, A.W.
Conference Paper
2013Ko-Generation von Elektrizität und Wärme aus konzentriertem Sonnenlicht: Überblick über Technologie und Anwendungen
Helmers, H.
Book Article
2013Modeling the thermal runaway effect in CPV modules
Steiner, M.; Siefer, G.; Bett, A.W.
Conference Paper
2013Multi-linear performance model for hybrid (C)PVT solar collectors
Helmers, H.; Kramer, K.
Journal Article
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
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.
Conference Paper
2013Photonic band gap engineering of solar cells
Höhn, O.; Kraus, T.; Zilk, M.; Schwarz, U.T.; Bläsi, B.
Conference Paper
2013Photovoltaik mit hohen Wirkungsgraden. III-V Mehrfachsolarzellen und konzentrierende PV
Bett, A.W.
Presentation
2013Photovoltaische Zellen zur optischen Leistungsübertragung
Helmers, H.
Presentation
2013Realization and characterization of thin single crystal Ge films on sapphire
Bogumilowicz, Y.; Abbadie, A.; Klinger, V.; Benaissa, L.; Gergaud, P.; Rouchon, D.; Maurois, C.; Lecouvey, C.; Blanc, N.; Charles-Alfred, C.; Drouin, A.; Ghyselen, B.; Wekkeli, A.; Dimroth, F.; Carron, V.
Journal Article
2013Series resistance mapping of III-V multijunction solar cells based on luminescence imaging
Nesswetter, H.; Dyck, W.; Lugli, P.; Bett, A.W.; Zimmermann, C.G.
Conference Paper
2013Stromnetze und Stromspeicher - Bausteine für den Umbau des Stromsystems für erneuerbare Energien
Philipps, S.P.
Book Article
2013Temperature dependent electroluminescence and voltages of multi-junction solar cells
Karcher, C.; Helmers, H.; Schachtner, M.; Dimroth, F.; Bett, A.W.
Conference Paper
2012Advanced concepts in concentrating photovoltaics (CPV)
Wiesenfarth, M.; Helmers, H.; Philipps, S.P.; Steiner, M.; Bett, A.W.
Conference Paper
2012Concentrating PV: Status and perspectives
Bett, A.W.; Wiesenfarth, M.; Philipps, S.P.
Presentation
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.
Conference Paper
2012CSP Storage Design and Market Value in an Export Case
Kost, C.; Flath C.; Möst, D.; Fluri, T.
Conference Paper
2012Einbinden der Erneuerbaren in das Energiesystem
Bett, A.W.; Philipps, S.P.
Journal Article
2012Experimental analysis of majority carrier transport processes at heterointerfaces in photovoltaic devices
Hoheisel, R.; Bett, A.W.
Journal Article
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
2012Indoor characterization of secondary optical elements
Schmid, T.; Hornung, T.; Nitz, P.
Conference Paper
2012Numerical simulations of absorption properties of InP nanowires for solar cell applications
Kailuweit, P.; Peters, M.; Leene, J.; Mergenthaler, K.; Dimroth, F.; Bett, A.W.
Journal Article
2012Outdoor test setup for concentrating photovoltaic and thermal (CPVT) systems
Helmers, H.; Boos, A.; Jetter, F.; Heimsath, A.; Wiesenfarth, M.; Bett, A.W.
Conference Paper
2012Realistic power output modeling of CPV modules
Steiner, M.; Siefer, G.; Bösch, A.; Hornung, T.; Bett, A.W.
Conference Paper
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.
Journal Article
2012Value generation of future CSP projects in North Africa
Kost, C.; Engelken, M.; Schlegl, T.
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
2011Electroluminescence Exposes Individual Performances in Multi-Junction Cells
Hoheisel, R.; Rönsch, S.; Dimroth, F.; Bett, A.W.; Nesswetter, H.; Zimmermann, C.G.
Journal Article
2011Fruitful symbiosis: Why an export bundled with wind energy is the most feasible option for North African concentrated solar power
Kost, Christoph; Pfluger, Benjamin; Eichhammer, Wolfgang; Ragwitz, Mario
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
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
2011Spectral Measurements Using Component Cells: Examinations on Measurement Precision
Jaus, J.; Mißbach, T.; Philipps, S.P.; Siefer, G.; Bett, A.W.
Conference Paper
2011Subcell I-V characteristic analysis of GaInP/GaInAs/Ge solar cells using electroluminescence measurements
Rönsch, S.; Hoheisel, R.; Dimroth, F.; Bett, A.W.
Journal Article
2011Updating the European Strategic Research Agenda
Pearsall, N.; Bett, A.W.; Bonemazzi, F.; Dimmler, B.; Glunz, S.; Poortmans, J.; Strauss, P.
Conference Paper
2010Advanced processing techniques used for the development of dual-junction monolithic interconnected modules
Helmers, H.; Oliva, E.; Bronner, W.; Dimroth, F.; Bett, A.W.
Conference Paper
2010Assessment of Optical Errors of Concentrator Optics for the Optimisation of Design and Production
Nitz, P.; Hornung, T.; Kutscheid, G.; Heimsath, A.
Presentation
2010CPV technology overview - research and development
Bett, A.W.; Kurtz, S.
Presentation
2010Evaluation of satellite cirrus data for performance models of CPV modules
Peharz, G.; Bugliaro, L.; Siefer, G.; 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
2010Investigations on interconnection technologies for CPV systems
Wiesenfarth, M.; Thaller, S.; Jaus, J.; Eltermann, F.; Passig, M.; Bett, A.W.
Conference Paper
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.
Conference Paper
2010Online process control of alkaline texturing baths with near-infrared spectroscopy
Zimmer, M.; Birmann, K.; Rentsch, J.
Journal Article
2010Optics for Concentrating and non Concentrating Photovoltaics
Nitz, P.
Presentation
2010Photovoltaik 3.0 - Innovation für mehr Strom aus Licht
Bett, A.W.
Presentation
2010Temperature and wavelength dependent measurement and simulation of fresnel lenses for concentrating photovoltaic
Hornung, T.; Bachmaier, A.; Nitz, P.; Gombert, A.
Conference Paper
2010Temperature dependent measurement and simulation of fresnel lenses for concentrating photovoltaics
Hornung, T.; Bachmaier, A.; Nitz, P.; Gombert, A.
Conference Paper
2010The world's first CPV stand-alone system - water supply in remote areas of Egypt
Vetter, M.; Schies, A.; Wachtel, J.; Koirala, B.P.; Heile, I.; Gombert, A.; Abulfotuh, F.
Conference Paper
2009High-voltage GaAs photovoltaic laser power converters
Schubert, J.; Oliva, E.; Dimroth, F.; Guter, W.; Löckenhoff, R.; Bett, A.W.
Journal Article
2009Optically powered fibre networks
Freude, W.; Röger, M.; Hiba, B.; Hoh, M.; Dreschmann, M.; Hehmann, J.; Pfeiffer, T.; Huebner, M.; Bett, A.; Becker, J.; Leuthold, J.
Presentation
2006Optically powered video camera network
Böttger, G.; Hübner, M.; Dreschmann, M.; Klamouris, C.; Paulsson, K.; Kueng, T.; Bett, A.W.; Becker, J.; Freude, W.; Leuthold, J.
Conference Paper