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H. Helmers · SciRah

Researcher profile · Semantic Scholar

H. Helmers

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H. Helmers — researcher profile on SciRah

h-index: 21
Works: 98
Citations: 1,716

Most-cited papers

Increasing the efficiency of fluorescent concentrator systems
J. Goldschmidt, M. Peters, Armin Bösch, H. Helmers +3 more
2009226 citations
Semantic Scholar
68.9% Efficient GaAs‐Based Photonic Power Conversion Enabled by Photon Recycling and Optical Resonance
H. Helmers, E. López, O. Höhn, D. Lackner +5 more
2021Physica Status Solidi (a)134 citations Open access
Semantic Scholar
Influence of temperature and irradiance on triple-junction solar subcells
H. Helmers, M. Schachtner, A. Bett
201388 citations
Semantic Scholar
Optimal laser wavelength for efficient laser power converter operation over temperature
O. Höhn, A. Walker, A. Bett, H. Helmers
201676 citations
Semantic Scholar
Indoor Photovoltaics for the Internet-of-Things – A Comparison of State-of-the-Art Devices from Different Photovoltaic Technologies
David Müller, Ershuai Jiang, Paula Rivas-Lazaro, Clemens Baretzky +18 more
2023ACS Applied Energy Materials64 citations
Semantic Scholar
A high-efficiency hybrid high-concentration photovoltaic system
S. Zimmermann, H. Helmers, M. Tiwari, S. Paredes +4 more
201563 citations
Semantic Scholar
6-W Optical Power Link With Integrated Optical Data Transmission
H. Helmers, Cornelius Armbruster, Moritz von Ravenstein, David Derix +1 more
2020IEEE transactions on power electronics60 citations Open access
Semantic Scholar
0.5-Gb/s OFDM-Based Laser Data and Power Transfer Using a GaAs Photovoltaic Cell
John Fakidis, S. Videv, H. Helmers, H. Haas
2018IEEE Photonics Technology Letters55 citations
Semantic Scholar
Simultaneous Wireless Data and Power Transfer for a 1-Gb/s GaAs VCSEL and Photovoltaic Link
John Fakidis, H. Helmers, H. Haas
2020IEEE Photonics Technology Letters53 citations Open access
Semantic Scholar
Modeling of concentrating photovoltaic and thermal systems
H. Helmers, Andreas W. Bett, J. Parisi, C. Agert
201452 citations Open access
Semantic Scholar
Reliable and lightning‐safe monitoring of wind turbine rotor blades using optically powered sensors
K. Worms, C. Klamouris, F. Wegh, L. Meder +11 more
201448 citations
Semantic Scholar
On the temperature dependence of dual‐junction laser power converters
S. Kasimir Reichmuth, H. Helmers, S. Philipps, M. Schachtner +2 more
201746 citations Open access
Semantic Scholar
Multi-linear performance model for hybrid (C)PVT solar collectors
H. Helmers, K. Kramer
201345 citations
Semantic Scholar
Bandgap determination based on electrical quantum efficiency
H. Helmers, C. Karcher, A. Bett
201344 citations
Semantic Scholar
Optical Wireless Communications: Enabling the Next-Generation Network of Networks
Aravindh Krishnamoorthy, Hossein Safi, O. Younus, Hossein Kazemi +19 more
2024IEEE Vehicular Technology Magazine39 citations
Semantic Scholar
The interaction of standards and innovation: Hybrid photovoltaic–thermal collectors
K. Kramer, H. Helmers
201333 citations
Semantic Scholar
Experimental coupling process efficiency and benefits of back surface reflectors in photovoltaic multi‐junction photonic power converters
E. López, O. Höhn, Meike Schauerte, D. Lackner +3 more
2021Progress in Photovoltaics30 citations Open access
Semantic Scholar
Comprehensive electrical loss analysis of monolithic interconnected multi‐segment laser power converters
R. Kimovec, H. Helmers, A. Bett, M. Topič
2018Progress in Photovoltaics28 citations Open access
Semantic Scholar
Impact of photon recycling and luminescence coupling on III–V single and dual junction photovoltaic devices
A. Walker, O. Höhn, D. Micha, L. Wagner +3 more
201524 citations
Semantic Scholar
Outdoor Test Setup for Concentrating Photovoltaic and Thermal (CPVT) Systems
H. Helmers, Alexander Boos, F. Jetter, A. Heimsath +2 more
201122 citations
Semantic Scholar
InP- and GaAs-Based Photonic Power Converters Under O-Band Laser Illumination: Performance Analysis and Comparison
Meghan N. Beattie, H. Helmers, G. Forcade, C. Valdivia +2 more
2023IEEE Journal of Photovoltaics21 citations Open access
Semantic Scholar
Advancing solar energy conversion efficiency to 47.6% and exploring the spectral versatility of III-V photonic power converters
H. Helmers, O. Höhn, David Lackner, Patrick Schygulla +11 more
2024OPTO20 citations Open access
Semantic Scholar
Voltage losses due to the perimeter and dark area in micro-concentrator solar cells
M. Wiesenfarth, M. Steiner, H. Helmers, A. Bett
202119 citations
Semantic Scholar
Integrated series/parallel connection for photovoltaic laser power converters with optimized current matching
L. Wagner, S. K. Reichmuth, S. Philipps, E. Oliva +2 more
2020Progress in Photovoltaics19 citations Open access
Semantic Scholar
Temperature‐dependent electroluminescence and voltages of multi‐junction solar cells
C. Karcher, H. Helmers, M. Schachtner, F. Dimroth +1 more
201419 citations
Semantic Scholar
Optical analysis of deviations in a concentrating photovoltaics central receiver system with a flux homogenizer.
H. Helmers, Wei Yi Thor, T. Schmidt, D. van Rooyen +1 more
2013Applied Optics19 citations
Semantic Scholar
Technical boundaries of micro-CPV module components: How small is enough?
M. Wiesenfarth, D. Iankov, Juan F. Martínez, P. Nitz +3 more
202217TH INTERNATIONAL CONFERENCE ON CONCENTRATOR PHOTOVOLTAIC SYSTEMS (CPV-17)18 citations Open access
Semantic Scholar
D1.4 - Photovoltaic Cells with Increased Voltage Output for Optical Power Supply of Sensor Electronics
H. Helmers, L. Wagner, C. Garza, S. K. Reichmuth +4 more
201518 citations Open access
Semantic Scholar
Advanced Concepts in Concentrating Photovoltaic (CPV)
A. Bett, M. Steiner, S. Philipps, H. Helmers +1 more
201218 citations
Semantic Scholar
Processing Techniques for Monolithic Interconnection of Solar Cells at Wafer Level
H. Helmers, E. Oliva, W. Bronner, Frank Dimroth +1 more
2010IEEE Transactions on Electron Devices17 citations
Semantic Scholar
Impact of photon recycling and luminescence coupling in III-V photovoltaic devices
A. Walker, O. Höhn, D. Micha, L. Wagner +3 more
2015Photonics West - Optoelectronic Materials and Devices15 citations
Semantic Scholar
0.5-Gb/s OFDM-Based Laser Data and Power Transfer using a GaAs Photovoltaic Cell
John Fakidis, S. Videv, H. Helmers, H. Haas
2018International Conference on Intelligent Pervasive Computing14 citations Open access
Semantic Scholar
On the alignment tolerance of photovoltaic laser power converters
L. Wagner, A. Bett, H. Helmers
201714 citations
Semantic Scholar
Multi-junction laser power converters exceeding 50% efficiency in the short wavelength infrared
G. Forcade, D. P. Wilson, Meghan N. Beattie, Carmine Pellegrino +12 more
2025Cell Reports Physical Science13 citations Open access
Semantic Scholar
51% Efficient Photonic Power Converters for O-Band Wavelengths around 1310 nm
H. Helmers, A. Franke, D. Lackner, O. Höhn +2 more
2020Photovoltaic Specialists Conference13 citations
Semantic Scholar
Transient I-V Measurement Set-Up for Photovoltaic Laser Power Converters under Monochromatic Irradiance
G. Siefer, A. Bett, M. Mundus, L. Stevens +5 more
201613 citations
Semantic Scholar
GaInP/AlGaAs metal‐wrap‐through tandem concentrator solar cells
E. Oliva, T. Salvetat, C. Jany, R. Thibon +7 more
201711 citations
Semantic Scholar
Investigations on the influence of temperature and concentration on solar cell performances
H. Helmers, M. Schachtner, A. Bett
201311 citations
Semantic Scholar
Recent Advances in the Development and Testing of Hybrid PV-Thermal Collectors
P. Dupeyrat, K. Kramer, H. Helmers, S. Fortuin
201111 citations
Semantic Scholar
Unlocking 1550 nm Laser Power Conversion by InGaAs Single- and Multi-Junction PV Cells
H. Helmers, O. Höhn, T. Tibbits, Meike Schauerte +2 more
2022Photovoltaic Specialists Conference10 citations
Semantic Scholar
Machine learning enhanced design and knowledge discovery for multi-junction photonic power converters
R. Hunter, G. Forcade, Yuri Grinberg, D. P. Wilson +11 more
2025Scientific Reports9 citations Open access
Semantic Scholar
High-Efficiency 1064 nm Metamorphic Photonic Power Converters for Spacecraft Wireless Power Transfer
Carmine Pellegrino, H. Helmers, J. Ohlmann, O. Höhn +1 more
20232023 13th European Space Power Conference (ESPC)9 citations
Semantic Scholar
Pushing the Boundaries of Photovoltaic Light to Electricity Conversion: A GaAs Based Photonic Power Converter with 68.9% Efficiency
H. Helmers, E. López, O. Höhn, D. Lackner +5 more
2021Photovoltaic Specialists Conference9 citations Open access
Semantic Scholar
Highly Efficient III-V Based Photovoltaic Laser Power Converters
H. Helmers
20199 citations
Semantic Scholar
Transient analysis of luminescent coupling effects in multi-junction solar cells
T. Tayagaki, S. K. Reichmuth, H. Helmers, G. Siefer
2018Journal of Applied Physics9 citations Open access
Semantic Scholar
Integrated Power and Data Transceiver Devices for Power-by-Light Systems – a Concept Study
H. Helmers, D. Lackner, G. Siefer, E. Oliva +2 more
20169 citations
Semantic Scholar
Advanced Processing Techniques Used for the Development of Dual‐Junction Monolithic Interconnected Modules
H. Helmers, E. Oliva, W. Bronner, F. Dimroth +1 more
20109 citations
Semantic Scholar
On the Influence of the Photo-Induced Leakage Current in Monolithically Interconnected Modules
R. Kimovec, H. Helmers, A. Bett, M. Topič
2018IEEE Journal of Photovoltaics8 citations
Semantic Scholar
Photovoltaic laser power converters for wireless optical power supply of sensor systems
H. Helmers, A. Bett
2016International Conference on Wireless for Space and Extreme Environments8 citations
Semantic Scholar
Sheet Resistance Optimization in (Al)GaInP Solar Cells for Concentrator Quadruple–Junction Solar Cells
Malte Klitzke, Patrick Schygulla, J. Schön, O. Höhn +4 more
2024Solar RRL7 citations Open access
Semantic Scholar

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