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| Presentation | 2022-12-09 09:50 Development of Phosphors for Deep Ultraviolet Field Emission Lamps Gai Hashimoto, Yoichiro Neo (Shizuoka Univ.), Takahiro Matsumoto (Nagoya City Univ.)  ED2022-59 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Recently, the effectiveness of UV-C light (wavelength: 100-280 nm) irradiation for coronavirus suppression has been demonstrated and has attracted much attention. However, UV-C germicidal lamps (wavelength: 254 nm), which are widely used today, may cause skin cancer and cataracts. The purpose of this study is to realize a deep ultraviolet field emission lamp (FEL) with a wavelength of 230 nm or less, which is reported to have no effect on the human body. The emission wavelength depends on the band structure of the phosphor, and the luminous intensity depends on the amount of emission current and acceleration voltage. A carbon-based electron source, which can emit a large current and is inexpensive and easy to handle, is used to excite the UV phosphor, which is a mixture of MgO and Al2O3 wide-gap semiconductors. We report the experimental results of shortening the central wavelength and increasing the luminescence intensity of the phosphors toward the realization of deep-ultraviolet FEL. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | FEL / UV-C / Sterilizing lamps / Phosphors / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 122, no. 298, ED2022-59, pp. 31-34, Dec. 2022. | |
| Paper # | ED2022-59 | |
| Date of Issue | 2022-12-01 (ED) | |
| 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 | ED2022-59 |
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| Conference Information | |
| Committee | ED |
| Conference Date | 2022-12-08 - 2022-12-09 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | 12/8 Nagoya University, 12/9 WINC AICHI |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Applications of electron and ion beam |
| Paper Information | |
| Registration To | ED |
| Conference Code | 2022-12-ED |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Development of Phosphors for Deep Ultraviolet Field Emission Lamps |
| Sub Title (in English) | |
| Keyword(1) | FEL |
| Keyword(2) | UV-C |
| Keyword(3) | Sterilizing lamps |
| Keyword(4) | Phosphors |
| Keyword(5) | |
| Keyword(6) | |
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| Keyword(8) | |
| 1st Author's Name | Gai Hashimoto |
| 1st Author's Affiliation | Shizuoka University (Shizuoka Univ.) |
| 2nd Author's Name | Yoichiro Neo |
| 2nd Author's Affiliation | Shizuoka University (Shizuoka Univ.) |
| 3rd Author's Name | Takahiro Matsumoto |
| 3rd Author's Affiliation | Nagoya City University (Nagoya City Univ.) |
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| Speaker | Author-1 |
| Date Time | 2022-12-09 09:50:00 |
| Presentation Time | 25 minutes |
| Registration for | ED |
| Paper # | ED2022-59 |
| Volume (vol) | vol.122 |
| Number (no) | no.298 |
| Page | pp.31-34 |
| #Pages | 4 |
| Date of Issue | 2022-12-01 (ED) |
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