| Presentation | 2022-12-09 Development of Phosphors for Deep Ultraviolet Field Emission Lamps Gai Hashimoto, Yoichiro Neo, Takahiro Matsumoto, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(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) |
| Keyword(in English) | FEL / UV-C / Sterilizing lamps / Phosphors |
| Paper # | ED2022-59 |
| Date of Issue | 2022-12-01 (ED) |
| Conference Information | |
| Committee | ED |
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| Conference Date | 2022/12/8(2days) |
| 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 |
| Chair | Hiroki Fujishiro(Tokyo Univ. of Science) |
| Vice Chair | Seiya Sakai(Hokkaido Univ.) |
| Secretary | Seiya Sakai(Saga Univ.) |
| Assistant | Masatoshi Koyama(Osaka Inst. of Tech.) / Yoshitugu Yamamoto(Mitsubishi Electric) |
| Paper Information | |
| Registration To | Technical Committee on Electron Devices |
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| Language | JPN |
| 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 |
| 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.) |
| Date | 2022-12-09 |
| Paper # | ED2022-59 |
| Volume (vol) | vol.122 |
| Number (no) | ED-298 |
| Page | pp.pp.31-34(ED), |
| #Pages | 4 |
| Date of Issue | 2022-12-01 (ED) |