Presentation | 2021-11-25 Indium Composition Dependence of Internal Quantum Efficiency in InGaN Quantum-Wells Measured by Simultaneous Microscopic Photoacoustic and Photoluminescence Spectroscopy Keito Mori, Yuchi Takahashi, Yuya Morimoto, Atsushi A. Yamaguchi, |
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PDF Download Page | PDF download Page Link |
Abstract(in Japanese) | (See Japanese page) |
Abstract(in English) | Accurate estimation of internal quantum efficiency (IQE) is necessary for comprehensive understanding of the carrier dynamics in InGaN quantum wells (QWs). In this study, we have measured the IQE values for a series of InGaN-QWs with systematically different indium compositions by using the simultaneous photoacoustic (PA) and photoluminescence (PL) measurements. It is observed that the IQE values decreased with increasing indium composition. Furthermore, we have analyzed the excitation power dependence of IQE values by using two essentially different theoretical model in order to check which model is correct, but it is found that both the models can explain the experimental results. Therefore, separate evaluation of the radiative and non-radiative lifetimes combined with the time-resolved PL measurements is needed. |
Keyword(in Japanese) | (See Japanese page) |
Keyword(in English) | InGaN quantum well / carrier dynamics / internal quantum efficiency |
Paper # | ED2021-20,CPM2021-54,LQE2021-32 |
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) | Indium Composition Dependence of Internal Quantum Efficiency in InGaN Quantum-Wells Measured by Simultaneous Microscopic Photoacoustic and Photoluminescence Spectroscopy |
Sub Title (in English) | |
Keyword(1) | InGaN quantum well |
Keyword(2) | carrier dynamics |
Keyword(3) | internal quantum efficiency |
1st Author's Name | Keito Mori |
1st Author's Affiliation | Kanazawa Institute of Technology(Kanazawa Inst. of Tech.) |
2nd Author's Name | Yuchi Takahashi |
2nd Author's Affiliation | Kanazawa Institute of Technology(Kanazawa Inst. of Tech.) |
3rd Author's Name | Yuya Morimoto |
3rd Author's Affiliation | Kanazawa Institute of Technology(Kanazawa Inst. of Tech.) |
4th Author's Name | Atsushi A. Yamaguchi |
4th Author's Affiliation | Kanazawa Institute of Technology(Kanazawa Inst. of Tech.) |
Date | 2021-11-25 |
Paper # | ED2021-20,CPM2021-54,LQE2021-32 |
Volume (vol) | vol.121 |
Number (no) | ED-259,CPM-260,LQE-261 |
Page | pp.pp.29-32(ED), pp.29-32(CPM), pp.29-32(LQE), |
#Pages | 4 |
Date of Issue | 2021-11-18 (ED, CPM, LQE) |