| Increasing the efficiency of fluorescent concentrator systems JC Goldschmidt, M Peters, A Bösch, H Helmers, F Dimroth, SW Glunz, ... Solar Energy Materials and Solar Cells 93 (2), 176-182, 2009 | 288 | 2009 |
| 68.9% efficient GaAs‐based photonic power conversion enabled by photon recycling and optical resonance H Helmers, E Lopez, O Höhn, D Lackner, J Schön, M Schauerte, ... physica status solidi (RRL)–Rapid Research Letters 15 (7), 2100113, 2021 | 112 | 2021 |
| Influence of temperature and irradiance on triple-junction solar subcells H Helmers, M Schachtner, AW Bett Solar Energy Materials and Solar Cells 116, 144-152, 2013 | 112 | 2013 |
| 0.5-Gb/s OFDM-based laser data and power transfer using a GaAs photovoltaic cell J Fakidis, S Videv, H Helmers, H Haas 2018 IEEE Photonics Conference (IPC), 1-4, 2018 | 75 | 2018 |
| 6-W optical power link with integrated optical data transmission H Helmers, C Armbruster, M von Ravenstein, D Derix, C Schöner IEEE Transactions on power electronics 35 (8), 7904-7909, 2020 | 71 | 2020 |
| A high-efficiency hybrid high-concentration photovoltaic system S Zimmermann, H Helmers, MK Tiwari, S Paredes, B Michel, ... International Journal of Heat and Mass Transfer 89, 514-521, 2015 | 71 | 2015 |
| Optimal laser wavelength for efficient laser power converter operation over temperature O Höhn, AW Walker, AW Bett, H Helmers Applied Physics Letters 108 (24), 2016 | 67 | 2016 |
| Multi-linear performance model for hybrid (C) PVT solar collectors H Helmers, K Kramer Solar Energy 92, 313-322, 2013 | 63 | 2013 |
| Modeling of concentrating photovoltaic and thermal systems H Helmers, AW Bett, J Parisi, C Agert Progress in Photovoltaics: Research and Applications 22 (4), 427-439, 2014 | 61 | 2014 |
| Simultaneous wireless data and power transfer for a 1-Gb/s GaAs VCSEL and photovoltaic link J Fakidis, H Helmers, H Haas IEEE Photonics Technology Letters 32 (19), 1277-1280, 2020 | 56 | 2020 |
| Bandgap determination based on electrical quantum efficiency H Helmers, C Karcher, AW Bett Applied Physics Letters 103 (3), 2013 | 53 | 2013 |
| Reliable and lightning‐safe monitoring of wind turbine rotor blades using optically powered sensors K Worms, C Klamouris, F Wegh, L Meder, D Volkmer, SP Philipps, ... Wind Energy 20 (2), 345-360, 2017 | 50 | 2017 |
| On the temperature dependence of dual‐junction laser power converters SK Reichmuth, H Helmers, SP Philipps, M Schachtner, G Siefer, AW Bett Progress in Photovoltaics: Research and Applications 25 (1), 67-75, 2017 | 44 | 2017 |
| The interaction of standards and innovation: Hybrid photovoltaic–thermal collectors K Kramer, H Helmers Solar Energy 98, 434-439, 2013 | 40 | 2013 |
| Comprehensive electrical loss analysis of monolithic interconnected multi‐segment laser power converters R Kimovec, H Helmers, AW Bett, M Topič Progress in Photovoltaics: Research and Applications 27 (3), 199-209, 2019 | 32 | 2019 |
| Advanced concepts in concentrating photovoltaics (CPV) M Wiesenfarth, H Helmers, SP Philipps, M Steiner, AW Bett Proceeding of 27th European PV Solar Energy Conference and Exhibition 24, 28, 2012 | 32 | 2012 |
| Impact of photon recycling and luminescence coupling on III–V single and dual junction photovoltaic devices AW Walker, O Höhn, DN Micha, L Wagner, H Helmers, AW Bett, F Dimroth Journal of Photonics for Energy 5 (1), 053087-053087, 2015 | 27 | 2015 |
| Optical analysis of deviations in a concentrating photovoltaics central receiver system with a flux homogenizer H Helmers, WY Thor, T Schmidt, DW van Rooyen, AW Bett Applied optics 52 (13), 2974-2984, 2013 | 27 | 2013 |
| Temperature‐dependent electroluminescence and voltages of multi‐junction solar cells C Karcher, H Helmers, M Schachtner, F Dimroth, AW Bett Progress in Photovoltaics: Research and Applications 22 (7), 757-763, 2014 | 25 | 2014 |
| Processing techniques for monolithic interconnection of solar cells at wafer level H Helmers, E Oliva, W Bronner, F Dimroth, AW Bett IEEE Transactions on electron devices 57 (12), 3355-3360, 2010 | 25 | 2010 |
Frank DimrothFraunhofer Institut für Solare Energiesysteme ISEBestätigte E-Mail-Adresse bei ise.fraunhofer.de
