| Presentation | 2009-07-23 Optical Degradation Characteristics of nano-sized Eu-Complex Encapsulated by Sol-Gel Derived Silica Glass Sayaka KATO, Takeshi FUKUDA, Zentaro HONDA, Norihiko KAMATA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Since Eu-complex generates bright red-emission by a violet excitation, it has been attracted much attention as phosphors for white light-emitting diodes (LEDs). However, the organic-ligand of Eu-complex is easily decomposed by free oxygen and water. In previous papers, we demonstrated the encapsulation technique of Eu-complex using the sol-gel derived silica glass. In this research, we used tetraethoxysilane, deionized water, ethanol, N,N-Dimethoxyformamide, and ammonia for a starting solution to form the silica glass around Eu-complex. By optimizing the fabrication condition, the nano-sized Eu(TTA)_3phen encapsulated by the sol-gel derived silica glass was successfully achieved. The Eu(TTA)_3phen powder showed a half brightness time of 67 minute while irradiating the ultraviolet light with the center wavelength of 360nm and the optical intensity of 5mW/cm^2, however, that of the encapsulated sample indicated that of 262 minutes. The improvement in the half brightness time was realized approximately 4-times by optimizing the encapsulating process. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Sol-Gel Process / Eu-Complex / Encapsulation / Silica Glass / Optical Degradation Characteristics |
| Paper # | EID2009-13 |
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| Conference Information | |
| Committee | EID |
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| Conference Date | 2009/7/16(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Electronic Information Displays (EID) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Optical Degradation Characteristics of nano-sized Eu-Complex Encapsulated by Sol-Gel Derived Silica Glass |
| Sub Title (in English) | |
| Keyword(1) | Sol-Gel Process |
| Keyword(2) | Eu-Complex |
| Keyword(3) | Encapsulation |
| Keyword(4) | Silica Glass |
| Keyword(5) | Optical Degradation Characteristics |
| 1st Author's Name | Sayaka KATO |
| 1st Author's Affiliation | Graduate School of Science and Engineering, Saitama University() |
| 2nd Author's Name | Takeshi FUKUDA |
| 2nd Author's Affiliation | Graduate School of Science and Engineering, Saitama University |
| 3rd Author's Name | Zentaro HONDA |
| 3rd Author's Affiliation | Graduate School of Science and Engineering, Saitama University |
| 4th Author's Name | Norihiko KAMATA |
| 4th Author's Affiliation | Graduate School of Science and Engineering, Saitama University |
| Date | 2009-07-23 |
| Paper # | EID2009-13 |
| Volume (vol) | vol.109 |
| Number (no) | 146 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |