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| Presentation | 2021-11-25 13:30 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 (Kanazawa Inst. of Tech.)  ED2021-20 CPM2021-54 LQE2021-32 Link to ES Tech. Rep. Archives: ED2021-20 CPM2021-54 LQE2021-32 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (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) |
| (in English) | InGaN quantum well / carrier dynamics / internal quantum efficiency / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 261, LQE2021-32, pp. 29-32, Nov. 2021. | |
| Paper # | LQE2021-32 | |
| Date of Issue | 2021-11-18 (ED, CPM, LQE) | |
| ISSN | Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | ED2021-20 CPM2021-54 LQE2021-32 Link to ES Tech. Rep. Archives: ED2021-20 CPM2021-54 LQE2021-32 |
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| Conference Information | |
| Committee | ED CPM LQE |
| Conference Date | 2021-11-25 - 2021-11-26 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | LQE |
| Conference Code | 2021-11-ED-CPM-LQE |
| Language | Japanese |
| 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 |
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| 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.) |
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| Speaker | Author-1 |
| Date Time | 2021-11-25 13:30:00 |
| Presentation Time | 25 minutes |
| Registration for | LQE |
| Paper # | ED2021-20, CPM2021-54, LQE2021-32 |
| Volume (vol) | vol.121 |
| Number (no) | no.259(ED), no.260(CPM), no.261(LQE) |
| Page | pp.29-32 |
| #Pages | 4 |
| Date of Issue | 2021-11-18 (ED, CPM, LQE) |
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