Jahr Year | Titel/Autor:in Title/Author | Publikationstyp Publication Type |
2023 |
InP- and GaAs-Based Photonic Power Converters Under O-Band Laser Illumination: Performance Analysis and Comparison
Beattie, Meghan; Helmers, Henning; Forcade, Gavin; Valdivia, Christopher; Höhn, Oliver; Hinzer, Karin |
Zeitschriftenaufsatz Journal Article
|
2022 |
Photonic Power Converters for Telecom Optical Wavelength Bands
Helmers, Henning |
Vortrag Presentation
|
2022 |
Increasing Transferability between Design and Epitaxial Growth of Multi-Junction Solar Cells
Schygulla, Patrick; Klitzke, Malte; Höhn, Oliver; Predan, Felix; Lackner, David; Schön, Jonas; Tibbits, Thomas; Helmers, Henning; Dimroth, Frank |
Konferenzbeitrag Conference Paper
|
2022 |
High-efficiency III-V Photovoltaic Cells for Photonic Power Conversion
Helmers, Henning |
Vortrag Presentation
|
2022 |
Quadruple Junction Solar Cell with 47.6 % Conversion Efficiency under Concentration
Schygulla, Patrick; Beutel, Paul; Heckelmann, Stefan; Höhn, Oliver; Klitzke, Malte; Schön, Jonas; Oliva, Eduard; Predan, Felix; Schachtner, Michael; Siefer, Gerald; Helmers, Henning; Dimroth, Frank; Lackner, David |
Vortrag Presentation
|
2022 |
Pushing the Boundaries of Photovoltaic Light to Electricity Conversion with III-V Based Photonic Power Converters
Helmers, Henning |
Poster
|
2022 |
Realization of Ultrathin GaAs Photonic Power Converters with Rear-Side Metal Grating on Full 4" Wafers
Höhn, Oliver; Schauerte, Meike; Schygulla, Patrick; Hauser, Hubert; Lackner, David; Bläsi, Benedikt; Helmers, Henning |
Konferenzbeitrag Conference Paper
|
2022 |
Technical boundaries of micro-CPV module components: How small is enough?
Wiesenfarth, Maike; Iankov, Dimitre; Martinez Sanchez, Juan Francisco; Nitz, Peter; Steiner, Marc; Dimroth, Frank; Helmers, Henning |
Konferenzbeitrag Conference Paper
|
2021 |
4-Junction GaAs Based Thin Film Photonic Power Converter with Back Surface Reflector for Medical Applications
Schauerte, M.; Höhn, O.; Wierzkowski, T.; Keller, G.; Helmers, H. |
Konferenzbeitrag Conference Paper
|
2021 |
Current Mismatch and Luminescence Coupling in Three-junction Photonic Power Converters with and without Back Reflector
Lopez, E.; Höhn, O.; Schauerte, M.; Lackner, D.; Schachtner, M.; Reichmuth, S.K.; Helmers, H. |
Konferenzbeitrag Conference Paper
|
2021 |
Free Space Optical Link for Simultaneous Power and 1 Gb/s Data Transmission
Fakidis, J.; Helmers, H.; Haas, H. |
Konferenzbeitrag Conference Paper
|
2021 |
Voltage losses due to the perimeter and dark area in micro-concentrator solar cells
Wiesenfarth, M.; Steiner, M.; Helmers, H.; Bett, A.W. |
Zeitschriftenaufsatz Journal Article
|
2021 |
Technical Boundaries of Micro-CPV Module Components: How Small is Enough?
Wiesenfarth, M.; Iankov, D.; Martínez, J.F.; Nitz, P.; Steiner, M.; Dimroth, F.; Helmers, H. |
Vortrag Presentation
|
2021 |
Non-Uniform Illumination Impacts on O-Band InGaAsP and Metamorphic GaInAs Photonic Power Converters
Beattie, M.; Helmers, H.; Valdivia, C.E.; Lackner, D.; Höhn, O.; Hinzer, K. |
Konferenzbeitrag Conference Paper
|
2021 |
Thin film GaAs solar cell enabled by direct rear side plating and patterned epitaxial lift-off
Wulf, J.; Oliva, E.; Mikolasch, G.; Bartsch, J.; Dimroth, F.; Helmers, H. |
Konferenzbeitrag Conference Paper
|
2021 |
Experimental Coupling Process Efficiency and Benefits of Back Surface Reflectors in Photovoltaic Multi-junction Photonic Power Converters
Lopez, E.; Höhn, O.; Schauerte, M.; Lackner, D.; Schachtner, M.; Reichmuth, K.; Helmers, H. |
Zeitschriftenaufsatz Journal Article
|
2021 |
New Frontiers in III-V based Photonic Power Converters
Helmers, H. |
Konferenzbeitrag Conference Paper
|
2021 |
68.9% 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 Journal Article
|
2021 |
Pushing 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 Conference Paper
|
2021 |
68.9% Efficient GaAs-Based Photonic Power Conversion Enabled by Photon Recycling and Optical Resonance. Cover Picture
Helmers, H.; Lopez, E.; Höhn, O.; Lackner, D.; Schön, J.; Schauerte, M.; Schachtner, M.; Dimroth, F.; Bett, A.W. |
Zeitschriftenaufsatz Journal Article
|
2021 |
Technical Boundaries of Micro-CPV Module Components: How Small is Enough
Wiesenfarth, M.; Martínez, J.F.; Steiner, M.; Iankov, D.; Nitz, P.; Dimroth, F.; Helmers, H. |
Vortrag Presentation
|
2021 |
Integrated 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 Journal Article
|
2021 |
High Efficiency III-V Based Photovoltaic Cells for Laser Power Beaming and Solar Power Generation in Space
Helmers, H. |
Vortrag Presentation
|
2020 |
Simultaneous Wireless Data and Power Transfer for a 1-Gb/s GaAs VCSEL and Photovoltaic Link
Fakidis, J.; Helmers, H.; Haas, H. |
Zeitschriftenaufsatz Journal Article
|
2020 |
Wafer-bonded GaInP/GaAs/GaInAs//GaSb four-junction solar cells with 43.8% efficiency under concentration
Predan, F.; Franke, A.; Hoehn, O.; Lackner, D.; Helmers, H.; Siefer, G.; Bett, A.W.; Dimroth, F. |
Konferenzbeitrag Conference Paper
|
2020 |
6-W Optical Power Link with Integrated Optical Data Transmission
Helmers, H.; Armbruster, C.; Ravenstein, Moritz von; Derix, D.; Schöner, C. |
Zeitschriftenaufsatz Journal Article
|
2020 |
Development and analysis of wafer-bonded four-junction solar cells based on antimonides with 42% efficiency under concentration
Predan, F.; Höhn, O.; Lackner, D.; Franke, A.; Helmers, H.; Dimroth, F. |
Zeitschriftenaufsatz Journal Article
|
2020 |
51% Efficient Photonic Power Converters for O-Band Wavelengths around 1310 nm
Helmers, H.; Franke, A.; Lackner, D.; Höhn, O.; Predan, F.; Dimroth, F. |
Konferenzbeitrag Conference Paper
|
2020 |
Power-by-Light or How to Reach an Efficiency of 68%?
Helmers, H. |
Vortrag Presentation
|
2019 |
Comprehensive Electrical Loss Analysis of Monolithic Interconnected Multi-Segment Laser Power Converters
Kimovec, R.; Helmers, H.; Bett, A.W.; Topic, M. |
Zeitschriftenaufsatz Journal Article
|
2019 |
5 W Optical Power Link with Generic Voltage Output and Modulated Data Signal
Haid, M.; Armbruster, C.; Derix, D.; Schöner, C.; Helmers, H. |
Vortrag Presentation
|
2019 |
Highly Efficient III-V Based Photovoltaic Laser Power Converters
Helmers, H.; Höhn, O.; Lackner, D.; Lopez, E.; Ruiz-Preciado, L.; Schauerte, M.; Siefer, G.; Dimroth, F.; Bett, A.W. |
Vortrag Presentation
|
2019 |
GaAs Multi-Junction Laser Power Converters at AZUR SPACE. Current Status and Development Activities
Keller, G.; Fuhrmann, D.; Wierzowski, T.; Volk, A.-K.; Fuhrmann, B.; Horst, L.; Wächter, C.; Schauerte, M.; Helmers, H.; Khorenko, V. |
Vortrag Presentation
|
2018 |
Transient Analysis of Luminescent Coupling Effects in Multi-junction Solar Cells
Tayagaki, T.; Reichmuth, S.K.; Helmers, H.; Siefer, G. |
Zeitschriftenaufsatz Journal Article
|
2018 |
On the influence of the photo-induced leakage current in monolithically interconnected modules
Kimovec, R.; Helmers, H.; Bett, A.W.; Topic, M. |
Zeitschriftenaufsatz Journal Article
|
2018 |
Photovoltaisches Halbleiterbauelement zur Konversion von Strahlungsleistung in elektrische Leistung, Verfahren zu dessen Herstellung und dessen Verwendung
Helmers, Henning; Höhn, Oliver; Walker, Alexandre Wiliam |
Patent
|
2018 |
Power loss mechanisms in small area monolithic-interconnected photovoltaic modules
Kimovec, R.; Helmers, H.; Bett, A.W.; Topic, M. |
Zeitschriftenaufsatz Journal Article
|
2018 |
0.5-Gb/s OFDM-Based Laser Data and Power Transfer Using a GaAs Photovoltaic Cell
Fakidis, J.; Videv, S.; Helmers, H.; Haas, H. |
Zeitschriftenaufsatz Journal Article
|
2018 |
Power-by-Light - Optical Power Transmission Based on Photovoltaic Laser Power Converters
Helmers, H. |
Vortrag Presentation
|
2018 |
Optische Leistungsversorgung für Sensorsysteme mittels photovoltaischer Laserleistungszellen
Helmers, H. |
Vortrag Presentation
|
2018 |
Luminescent Coupling in Multi-Junction Photovoltaic Devices Studied by Transient Voltage Measurements
Tayagaki, T.; Reichmuth, S.K.; Helmers, H.; Siefer, G. |
Vortrag Presentation
|
2017 |
On the alignment tolerance of photovoltaic laser power converters
Wagner, L.; Bett, A.W.; Helmers, H. |
Zeitschriftenaufsatz Journal Article
|
2017 |
On 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 Journal Article
|
2017 |
GaInP/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. |
Zeitschriftenaufsatz Journal Article
|
2017 |
Multi-segment photovoltaic laser power converters and their electrical losses
Kimovec, R.; Helmers, H.; Bett, A.W.; Topic, M. |
Konferenzbeitrag Conference Paper
|
2017 |
Reliable 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. |
Zeitschriftenaufsatz Journal Article
|
2017 |
Power loss mechanisms in monolithic-interconnected six-segment laser power converter
Kimovec, R.; Helmers, H.; Bett, A.W.; Topic, M. |
Vortrag Presentation
|
2016 |
Optical power supply of smart sensors using photovoltaic laser power converters
Helmers, H. |
Vortrag Presentation
|
2016 |
III-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. |
Konferenzbeitrag Conference Paper
|
2016 |
Determining the optimal laser wavelength for laser power conversion depending on operation temperature
Höhn, O.; Walker, A.W.; Bett, A.W.; Helmers, H. |
Konferenzbeitrag Conference Paper
|
2016 |
Optimal laser wavelength for efficient laser power converter operation over temperature
Höhn, O.; Walker, A.W.; Bett, A.W.; Helmers, H. |
Zeitschriftenaufsatz Journal Article
|
2016 |
Integrated 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 Conference Paper
|
2016 |
Transient 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 Conference Paper
|
2016 |
Photovoltaic laser power converters for wireless optical power supply of sensor systems
Helmers, H.; Bett, A.W. |
Konferenzbeitrag Conference Paper
|
2016 |
Temperature and injection current dependent electroluminescence for evaluation of single-junction single-segment GaAs laser power converter
Kimovec, R.; Helmers, H.; Bett, A.W.; Topic, M. |
Zeitschriftenaufsatz Journal Article
|
2016 |
Spatial and spectral electroluminescence for single-junction single-segment GaAs laser power converter characterization
Kimovec, R.; Helmers, H.; Bett, A.W.; Topic, M. |
Vortrag Presentation
|
2016 |
Influence of injection current and temperature on electroluminescence of GaAs laser power converters
Kimovec, R.; Helmers, H.; Bett, A.W.; Topic, M. |
Vortrag Presentation
|
2015 |
A 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. |
Zeitschriftenaufsatz Journal Article
|
2015 |
Impact 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. |
Konferenzbeitrag Conference Paper
|
2015 |
Photovoltaic Cells with Increased Voltage Output for Optical Power Supply of Sensor Electronics
Helmers, H.; Wagner, L.; Garza, C.E.; Reichmuth, S.K.; Oliva, E.; Philipps, S.P.; Lackner, D.; Bett, A. |
Konferenzbeitrag Conference Paper
|
2015 |
Impact of photon recycling and luminescence coupling on III-V single and dual junction photovoltaic devices
Walker, A.W.; Höhn, O.; Micha, D.N.; Wagner, L.; Helmers, H.; Bett, A.W.; Dimroth, F. |
Zeitschriftenaufsatz Journal Article
|
2014 |
Modeling of concentrating photovoltaic and thermal systems
Helmers, H.; Bett, A.W.; Parisi, J.; Agert, C. |
Zeitschriftenaufsatz Journal Article
|
2014 |
Photovoltaic cells for optical power and data transmission
Helmers, H. |
Vortrag Presentation
|
2014 |
Temperature-dependent electroluminescence and voltages of multi-junction solar cells
Karcher, C.; Helmers, H.; Schachtner, M.; Dimroth, F.; Bett, A.W. |
Zeitschriftenaufsatz Journal Article
|
2014 |
III-V Solarzellen für die optische Leistungsübertragung
Helmers, Henning |
Vortrag Presentation
|
2014 |
Lightning-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.K.; Helmers, H.; Bett, A.W.; Vourvoulakis, J.; Freude, W.; Leuthold, J.; Stork, W. |
Konferenzbeitrag Conference Paper
|
2014 |
Photovoltaic cells for optical power and data transmission
Helmers, H.; Philipps, S.P.; Reichmuth, S.K.; Oliva, E.; Lackner, D.; Bett, A.W. |
Vortrag Presentation
|
2013 |
Photovoltaische Zellen zur optischen Leistungsübertragung
Helmers, H. |
Vortrag Presentation
|
2013 |
Optical analysis of deviations in a concentrating photovoltaics central receiver system with a flux homogenizer
Helmers, H.; Thor, W.Y.; Schmidt, T.; Rooyen, D.W. van; Bett, A.W. |
Zeitschriftenaufsatz Journal Article
|
2013 |
Bandgap determination based on electrical quantum efficiency
Helmers, H.; Karcher, C.; Bett, A.W. |
Zeitschriftenaufsatz Journal Article
|
2013 |
Ko-Generation von Elektrizität und Wärme aus konzentriertem Sonnenlicht: Überblick über Technologie und Anwendungen
Helmers, H. |
Aufsatz in Buch Book Article
|
2013 |
The Interaction of Standards and Innovation: Hybrid Photovoltaic-thermal Collectors
Kramer, K.; Helmers, H. |
Zeitschriftenaufsatz Journal Article
|
2013 |
Multi-linear performance model for hybrid (C)PVT solar collectors
Helmers, H.; Kramer, K. |
Zeitschriftenaufsatz Journal Article
|
2013 |
Efficiency 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 Conference Paper
|
2013 |
Influence of temperature and irradiance on triple-junction solar subcells
Helmers, H.; Schachtner, M.; Bett, A.W. |
Zeitschriftenaufsatz Journal Article
|
2013 |
Cogeneration of photovoltaic electricity and heat using concentrated solar radiation
Helmers, H. |
Dissertation Doctoral Thesis
|
2013 |
Advanced 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. |
Konferenzbeitrag Conference Paper
|
2013 |
Investigations on the influence of temperature and concentration on solar cell performances
Helmers, H.; Schachtner, M.; Bett, A.W. |
Konferenzbeitrag Conference Paper
|
2013 |
Temperature dependent electroluminescence and voltages of multi-junction solar cells
Karcher, C.; Helmers, H.; Schachtner, M.; Dimroth, F.; Bett, A.W. |
Konferenzbeitrag Conference Paper
|
2012 |
Front-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 Conference Paper
|
2012 |
Outdoor test setup for concentrating photovoltaic and thermal (CPVT) systems
Helmers, H.; Boos, A.; Jetter, F.; Heimsath, A.; Wiesenfarth, M.; Bett, A.W. |
Konferenzbeitrag Conference Paper
|
2012 |
Advanced concepts in concentrating photovoltaics (CPV)
Wiesenfarth, M.; Helmers, H.; Philipps, S.P.; Steiner, M.; Bett, A.W. |
Konferenzbeitrag Conference Paper
|
2011 |
Recent advances in the development and testing of hybrid PV-thermal collectors
Dupeyrat, P.; Helmers, H.; Fortuin, S.; Kramer, K. |
Konferenzbeitrag Conference Paper
|
2011 |
Halbleiterbauelement im Mehrschichtaufbau und hieraus gebildetes Modul
Wiesenfarth, Maike; Guter, Wolfgang; Helmers, Henning |
Patent
|
2010 |
Processing techniques for monolithic interconnection of solar cells at wafer level
Helmers, H.; Olivia, E.; Bronner, W.; Dimroth, F.; Bett, A.W. |
Zeitschriftenaufsatz Journal Article
|
2010 |
Advanced processing techniques used for the development of dual-junction monolithic interconnected modules
Helmers, H.; Oliva, E.; Bronner, W.; Dimroth, F.; Bett, A.W. |
Konferenzbeitrag Conference Paper
|
2009 |
Increasing the efficiency of fluorescent concentrator systems
Goldschmidt, J.C.; Peters, M.; Bösch, A.; Helmers, H.; Dimroth, F.; Glunz, S.W.; Willeke, G. |
Zeitschriftenaufsatz Journal Article
|