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| Presentation | 2009-11-19 13:05 High spatial resolution PL mapping of {11-22} InGaN quantum wells by scanning near-field optical microscope Akio Kaneta, Masaya Ueda, Mitsuru Funato, Yoichi Kawakami (Kyoto Univ.)  ED2009-135 CPM2009-109 LQE2009-114 Link to ES Tech. Rep. Archives: ED2009-135 CPM2009-109 LQE2009-114 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Spatially resolved photoluminescence mapping was performed for c plane and {11-22} InGaN/GaN quantum wells (QWs) by a scanning near field optical microscope, and differences of recombination dynamics between them were investigated at cryogenic temperature. For the c plane QW, despite the cryogenic temperature, the PL intensity map consists of island like structure where the strong PL intensity domains correspond to the lower emission energy bands. Moreover, the PL spectra are composed of several emission peaks, and the shape of spectra is different in each position. These results indicate that the carriers/excitons are diffused to localization centers and recombine radiatively. On the other hand, such PL intensity fluctuations and position dependence of PL spectra have not been observed in the {11-22} QW. These findings strongly suggest that the density of localization centers in the {11-22} QW is much higher than that in the c plane QW. Additionally, the carrier diffusion length of the {11-22} QW is much shorter than that of the c plane QW. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | c plane InGaN QW / {11-22} InGaN QW / scanning near field optical microscope / localization center / diffusion / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 109, no. 290, LQE2009-114, pp. 35-38, Nov. 2009. | |
| Paper # | LQE2009-114 | |
| Date of Issue | 2009-11-12 (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 | ED2009-135 CPM2009-109 LQE2009-114 Link to ES Tech. Rep. Archives: ED2009-135 CPM2009-109 LQE2009-114 |
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| Conference Information | |
| Committee | ED LQE CPM |
| Conference Date | 2009-11-19 - 2009-11-20 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Univ. of Tokushima (Josanjima Campus, Kogyo-Kaikan) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | LQE |
| Conference Code | 2009-11-ED-LQE-CPM |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | High spatial resolution PL mapping of {11-22} InGaN quantum wells by scanning near-field optical microscope |
| Sub Title (in English) | |
| Keyword(1) | c plane InGaN QW |
| Keyword(2) | {11-22} InGaN QW |
| Keyword(3) | scanning near field optical microscope |
| Keyword(4) | localization center |
| Keyword(5) | diffusion |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Akio Kaneta |
| 1st Author's Affiliation | Kyoto University (Kyoto Univ.) |
| 2nd Author's Name | Masaya Ueda |
| 2nd Author's Affiliation | Kyoto University (Kyoto Univ.) |
| 3rd Author's Name | Mitsuru Funato |
| 3rd Author's Affiliation | Kyoto University (Kyoto Univ.) |
| 4th Author's Name | Yoichi Kawakami |
| 4th Author's Affiliation | Kyoto University (Kyoto Univ.) |
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| Speaker | Author-1 |
| Date Time | 2009-11-19 13:05:00 |
| Presentation Time | 25 minutes |
| Registration for | LQE |
| Paper # | ED2009-135, CPM2009-109, LQE2009-114 |
| Volume (vol) | vol.109 |
| Number (no) | no.288(ED), no.289(CPM), no.290(LQE) |
| Page | pp.35-38 |
| #Pages | 4 |
| Date of Issue | 2009-11-12 (ED, CPM, LQE) |
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