| Presentation | 2021-11-25 Evaluation of PV performance of GaInN besed photovoltaic cells under monochromatic light illumination for optical wireless power transmission system Taiki Nakabayashi, Kousuke Yamamoto, Pradip Dalapati, Takashi Egawa, Makoto Miyoshi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | GaInN-based photovoltaic (PV) devices are highly promising for application to optical wireless power transmission (OWPT) systems as well as solar cells. In this study, we attempted to improve the diode I-V characteristics focusing on improving the quality of epitaxial films employing GaInN-MQWs as a PV device for optical wireless power transmission systems. As a result of the MOCVD study, the epilayer qualities in the PV cell improved significantly through the adoption of an optimized growth temperature for the GaInN MQWs and of the two-step growth for the top p-GaN layers. Furthermore, the improved epilayer qualities resulted in the decrease in carrier recombination currents and series resistance for the forward diode characteristics without a light illumination. Accordingly, sample with the improved qualities exhibited a high open-circuit voltage and a high fill factor in the PV characteristics. Eventually, the highest power conversion efficiency (PCE) was measured to be 42.7% at a monochromatic light illumination with 389 nm in wavelength and 5 mW cm−2 in optical power density. The dependency of the PV performance on the optical power densities at monochromatic lights predicted that a higher PCE value may be achievable at a higher optical-power-density illumination. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | GaInN-MQW / MOCVD / OWPT system |
| Paper # | ED2021-27,CPM2021-61,LQE2021-39 |
| Date of Issue | 2021-11-18 (ED, CPM, LQE) |
| Conference Information | |
| Committee | ED / CPM / LQE |
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| Conference Date | 2021/11/25(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Hiroki Fujishiro(Tokyo Univ. of Science) / Yuichi Nakamura(Toyohashi Univ. of Tech.) / Toshitada Umezawa(NICT) |
| Vice Chair | Seiya Sakai(Hokkaido Univ.) / Hideki Nakazawa(Hirosaki Univ.) / Junichi Takahara(Osaka Univ.) |
| Secretary | Seiya Sakai(Fjitsu Lab.) / Hideki Nakazawa(NTT) / Junichi Takahara(Ehime Univ.) |
| Assistant | Ryota Isonoi(SCIOCS) / Yoshitugu Yamamoto(Mitsubishi Electric) / Yasuo Kimura(Tokyo Univ. of Tech.) / Fumihiko Hirose(Yamagata Univ.) / Noriko Bamba(Shinshu Univ.) / Shinsuke Tanaka(Fujitsu) / Nobuhiko Nishiyama(Tokyo Inst. of Tech.) |
| Paper Information | |
| Registration To | Technical Committee on Electron Devices / Technical Committee on Component Parts and Materials / Technical Committee on Lasers and Quantum Electronics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Evaluation of PV performance of GaInN besed photovoltaic cells under monochromatic light illumination for optical wireless power transmission system |
| Sub Title (in English) | |
| Keyword(1) | GaInN-MQW |
| Keyword(2) | MOCVD |
| Keyword(3) | OWPT system |
| 1st Author's Name | Taiki Nakabayashi |
| 1st Author's Affiliation | Nagoya Institute of Technology(NIT) |
| 2nd Author's Name | Kousuke Yamamoto |
| 2nd Author's Affiliation | Nagoya Institute of Technology(NIT) |
| 3rd Author's Name | Pradip Dalapati |
| 3rd Author's Affiliation | Nagoya Institute of Technology(NIT) |
| 4th Author's Name | Takashi Egawa |
| 4th Author's Affiliation | Nagoya Institute of Technology(NIT) |
| 5th Author's Name | Makoto Miyoshi |
| 5th Author's Affiliation | Nagoya Institute of Technology(NIT) |
| Date | 2021-11-25 |
| Paper # | ED2021-27,CPM2021-61,LQE2021-39 |
| Volume (vol) | vol.121 |
| Number (no) | ED-259,CPM-260,LQE-261 |
| Page | pp.pp.59-62(ED), pp.59-62(CPM), pp.59-62(LQE), |
| #Pages | 4 |
| Date of Issue | 2021-11-18 (ED, CPM, LQE) |