| Presentation | 2020-11-26 Examination of GaN-based photodetectors for optical wireless power transmission system Kosuke 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) | Aiming at a high-efficiency photodetectors for the optical wireless power transmission system consisting of semiconductor light-emitting devices and photodetectors, a photodetector epi-structure employing GaN/GaInN-MQWs was grown by metalorganic chemical vapor deposition (MOCVD) on c-plane sapphire. Then, the epitaxial structure, spectral sensitivity and photo-electrical characteristics were evaluated. The maximum external quantum efficiency (EQE) was measured to be 74% at a wavelength of 382 nm, and the short-circuit current density of 1.14 mA/cm2, open-circuit voltage of 2.23 V and energy conversion efficiency of 32% was obtained at a 382-nm-wavelength light irradiation with a light power of 5mW/cm2. While there still are a few issues regarding shunt and series resistances, further improvement in enegry efficiency might be obtained under higher-power light irradiation. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | GaInN-MQW / MOCVD |
| Paper # | ED2020-5,CPM2020-26,LQE2020-56 |
| Date of Issue | 2020-11-19 (ED, CPM, LQE) |
| Conference Information | |
| Committee | LQE / CPM / ED |
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| Conference Date | 2020/11/26(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Hiroshi Yasaka(Tohoku Univ.) / Mayumi Takeyama(Kitami Inst. of Tech.) / Michihiko Suhara(TMU) |
| Vice Chair | Toshitada Umezawa(NICT) / Yuichi Nakamura(Toyohashi Univ. of Tech.) / Hiroki Fujishiro(Tokyo Univ. of Science) |
| Secretary | Toshitada Umezawa(Osaka Univ.) / Yuichi Nakamura(NTT) / Hiroki Fujishiro(Hirosaki Univ.) |
| Assistant | Kazuue Fujita(Hamamatsu) / Nobuhiko Nishiyama(Tokyo Inst. of Tech.) / Yasuo Kimura(Tokyo Univ. of Tech.) / Tomoaki Terasako(Ehime Univ.) / Fumihiko Hirose(Yamagata Univ.) / Takuya Tsutsumi(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Lasers and Quantum Electronics / Technical Committee on Component Parts and Materials / Technical Committee on Electron Devices |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Examination of GaN-based photodetectors for optical wireless power transmission system |
| Sub Title (in English) | |
| Keyword(1) | GaInN-MQW |
| Keyword(2) | MOCVD |
| 1st Author's Name | Kosuke Yamamoto |
| 1st Author's Affiliation | Nagoya Institute of Technology(NIT) |
| 2nd Author's Name | Pradip Dalapati |
| 2nd Author's Affiliation | Nagoya Institute of Technology(NIT) |
| 3rd Author's Name | Takashi Egawa |
| 3rd Author's Affiliation | Nagoya Institute of Technology(NIT) |
| 4th Author's Name | Makoto Miyoshi |
| 4th Author's Affiliation | Nagoya Institute of Technology(NIT) |
| Date | 2020-11-26 |
| Paper # | ED2020-5,CPM2020-26,LQE2020-56 |
| Volume (vol) | vol.120 |
| Number (no) | ED-254,CPM-255,LQE-256 |
| Page | pp.pp.17-20(ED), pp.17-20(CPM), pp.17-20(LQE), |
| #Pages | 4 |
| Date of Issue | 2020-11-19 (ED, CPM, LQE) |