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| Presentation | 2023-12-01 16:40 Development of Shorter Wavelength 230 nm-Band Far-UVC LEDs and Realization of High Output Power LED Panels Mitsuhiro Muta, Hiroyuki Oogami, Kengo Mouri, Hirokazu Kawashima (Nippon Tungsten), Noritoshi Maeda, Ajmal Khan, Yukio Kashima, Eriko Katsuura, Yuuki Nakamura, Kou Sumishi, Taiga Kirihara (RIKEN), Sachie Fujikawa, Hiroyuki Yaguchi (Saitama Univ), Yasushi Iwaisako (Nippon Tungsten), Hideki Hirayama (RIKEN)  ED2023-37 CPM2023-79 LQE2023-77 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | AlGaN-based 230nm-band far-UVC LEDs that is harmless to the human body were developed toward achievements of shorter wavelength and higher efficiency operations. The efficiency of 221-236nm LEDs was improved by increasing the Al composition of the AlGaN buffer layer, optimizing the structure of the quantum-well emission layer, and introducing a polarization doping effect p-type transparent contact layer. We demonstrated the output power of approximately 3 mW in 230 nm LED. In addition, by mounting them in parallel, we created an LED panel that emits an output of 88 mW in CW operation and 220 mW in pulse operation. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | far-UVC LED / AlGaN / LED panel / virus inactivation / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 123, no. 290, LQE2023-77, pp. 102-105, Nov. 2023. | |
| Paper # | LQE2023-77 | |
| Date of Issue | 2023-11-23 (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 | ED2023-37 CPM2023-79 LQE2023-77 |
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| Conference Information | |
| Committee | LQE ED CPM |
| Conference Date | 2023-11-30 - 2023-12-01 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | LQE |
| Conference Code | 2023-11-LQE-ED-CPM |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Development of Shorter Wavelength 230 nm-Band Far-UVC LEDs and Realization of High Output Power LED Panels |
| Sub Title (in English) | |
| Keyword(1) | far-UVC LED |
| Keyword(2) | AlGaN |
| Keyword(3) | LED panel |
| Keyword(4) | virus inactivation |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Mitsuhiro Muta |
| 1st Author's Affiliation | Nippon Tungsten (Nippon Tungsten) |
| 2nd Author's Name | Hiroyuki Oogami |
| 2nd Author's Affiliation | Nippon Tungsten (Nippon Tungsten) |
| 3rd Author's Name | Kengo Mouri |
| 3rd Author's Affiliation | Nippon Tungsten (Nippon Tungsten) |
| 4th Author's Name | Hirokazu Kawashima |
| 4th Author's Affiliation | Nippon Tungsten (Nippon Tungsten) |
| 5th Author's Name | Noritoshi Maeda |
| 5th Author's Affiliation | RIKEN (RIKEN) |
| 6th Author's Name | Ajmal Khan |
| 6th Author's Affiliation | RIKEN (RIKEN) |
| 7th Author's Name | Yukio Kashima |
| 7th Author's Affiliation | RIKEN (RIKEN) |
| 8th Author's Name | Eriko Katsuura |
| 8th Author's Affiliation | RIKEN (RIKEN) |
| 9th Author's Name | Yuuki Nakamura |
| 9th Author's Affiliation | RIKEN (RIKEN) |
| 10th Author's Name | Kou Sumishi |
| 10th Author's Affiliation | RIKEN (RIKEN) |
| 11th Author's Name | Taiga Kirihara |
| 11th Author's Affiliation | RIKEN (RIKEN) |
| 12th Author's Name | Sachie Fujikawa |
| 12th Author's Affiliation | Saitama University (Saitama Univ) |
| 13th Author's Name | Hiroyuki Yaguchi |
| 13th Author's Affiliation | Saitama University (Saitama Univ) |
| 14th Author's Name | Yasushi Iwaisako |
| 14th Author's Affiliation | Nippon Tungsten (Nippon Tungsten) |
| 15th Author's Name | Hideki Hirayama |
| 15th Author's Affiliation | RIKEN (RIKEN) |
| Speaker | Author-1 |
| Date Time | 2023-12-01 16:40:00 |
| Presentation Time | 25 minutes |
| Registration for | LQE |
| Paper # | ED2023-37, CPM2023-79, LQE2023-77 |
| Volume (vol) | vol.123 |
| Number (no) | no.288(ED), no.289(CPM), no.290(LQE) |
| Page | pp.102-105 |
| #Pages | 4 |
| Date of Issue | 2023-11-23 (ED, CPM, LQE) |
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