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| Presentation | 2019-11-22 14:20 Estimation of Internal Quantum Efficiency in Various InGaN Single Quantum Wells with Different Qualities by Simultaneous Photoacoustic and Photoluminescence Measurements Keito Mori, Yuchi Takahashi, Yuya Morimoto, Atsushi A. Yamaguchi (KIT), Susumu Kusanagi, Yuya Kanitani, Yoshihiro Kudo, Shigetaka Tomiya (SONY)  ED2019-57 CPM2019-76 LQE2019-100 Link to ES Tech. Rep. Archives: ED2019-57 CPM2019-76 LQE2019-100 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In order to comprehensively understand the optical properties of nitride semiconductors, we believe accurate measurement of internal quantum efficiency (IQE) would be very important. In our previous studies, we performed simultaneous photoacoustic (PA) and photoluminescence (PL) measurements to estimate IQE values of GaN films and obtained reasonable results. However, the measurement was not very easy for InGaN single quantum well (SQW) samples because the active layers in InGaN SQW samples are very thin, and S/N ratio was too small to obtain reproducible results. In this study, we have successfully reduced the noise level of PA measurements by one order of magnitude. By using this method, we have measured the IQE values for various InGaN SQW samples with different qualities. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | InGaN / quantum well / internal quantum efficiency / photo-acoustic / radiative recombination / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 119, no. 304, LQE2019-100, pp. 101-106, Nov. 2019. | |
| Paper # | LQE2019-100 | |
| Date of Issue | 2019-11-14 (ED, CPM, LQE) | |
| ISSN | Print edition: ISSN 0913-5685 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 | ED2019-57 CPM2019-76 LQE2019-100 Link to ES Tech. Rep. Archives: ED2019-57 CPM2019-76 LQE2019-100 |
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| Conference Information | |
| Committee | CPM LQE ED |
| Conference Date | 2019-11-21 - 2019-11-22 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Shizuoka Univ. (Hamamatsu) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Nitride Semiconductor Devices, Materials, Related Technologies |
| Paper Information | |
| Registration To | LQE |
| Conference Code | 2019-11-CPM-LQE-ED |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Estimation of Internal Quantum Efficiency in Various InGaN Single Quantum Wells with Different Qualities by Simultaneous Photoacoustic and Photoluminescence Measurements |
| Sub Title (in English) | |
| Keyword(1) | InGaN |
| Keyword(2) | quantum well |
| Keyword(3) | internal quantum efficiency |
| Keyword(4) | photo-acoustic |
| Keyword(5) | radiative recombination |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Keito Mori |
| 1st Author's Affiliation | Kanazawa Institute of Technology (KIT) |
| 2nd Author's Name | Yuchi Takahashi |
| 2nd Author's Affiliation | Kanazawa Institute of Technology (KIT) |
| 3rd Author's Name | Yuya Morimoto |
| 3rd Author's Affiliation | Kanazawa Institute of Technology (KIT) |
| 4th Author's Name | Atsushi A. Yamaguchi |
| 4th Author's Affiliation | Kanazawa Institute of Technology (KIT) |
| 5th Author's Name | Susumu Kusanagi |
| 5th Author's Affiliation | SONY Corporation (SONY) |
| 6th Author's Name | Yuya Kanitani |
| 6th Author's Affiliation | SONY Corporation (SONY) |
| 7th Author's Name | Yoshihiro Kudo |
| 7th Author's Affiliation | SONY Corporation (SONY) |
| 8th Author's Name | Shigetaka Tomiya |
| 8th Author's Affiliation | SONY Corporation (SONY) |
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| Speaker | Author-1 |
| Date Time | 2019-11-22 14:20:00 |
| Presentation Time | 20 minutes |
| Registration for | LQE |
| Paper # | ED2019-57, CPM2019-76, LQE2019-100 |
| Volume (vol) | vol.119 |
| Number (no) | no.302(ED), no.303(CPM), no.304(LQE) |
| Page | pp.101-106 |
| #Pages | 6 |
| Date of Issue | 2019-11-14 (ED, CPM, LQE) |
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