Presentation | 2019-01-25 [Poster Presentation] Improvement of luminescent characteristics by atmospheric post-annealing for Y4Si2O7N2:Eu3+ red phosphor synthesized in NH3 Kodai Nakamoto, Misa Kawashima, Ken Kinoshita, Yuichiro Hatanaka, Tadashi Ishigaki, Takashi Kunimoto, Tetsuo Honma, Koutoku Ohmi, |
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PDF Download Page | PDF download Page Link |
Abstract(in Japanese) | (See Japanese page) |
Abstract(in English) | Y4Si2O7N2:Eu3+ phosphor has been synthesized in an NH3 atmosphere. The synthesized sample shows a red emission due to Eu3+ and a broad charge transfer state (CTS) excitation band in the near-UV region. The corresponding CTS energy is about 3.61 eV, which is almost same as 3.58 eV of La2O2S: Eu3+. The PL intensity is furthermore increased by post-annealing in air. From the X-ray Absorption Fine Structure (XAFS) measurement, it is confirmed that the Eu3+ in the post-annealed phosphor sample is more than 90%. It concludes that stoichiometric N composition is achieved by the synthesis in NH3, resulting in the enhancement of Eu3+ activation. |
Keyword(in Japanese) | (See Japanese page) |
Keyword(in English) | Y4Si2O7N2:Eu3+ / red phosphor / white LED / CTS excitation band / synthesis in NH3 |
Paper # | EID2018-16 |
Date of Issue | 2019-01-17 (EID) |
Conference Information | |
Committee | EID / ITE-IDY / IEIJ-SSL / SID-JC / IEE-EDD |
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Conference Date | 2019/1/24(2days) |
Place (in Japanese) | (See Japanese page) |
Place (in English) | Kagoshima University |
Topics (in Japanese) | (See Japanese page) |
Topics (in English) | |
Chair | 小南 裕子(静岡大) / Yoshihide Fujisaki(NHK) |
Vice Chair | 木村 睦(龍谷大) / 志賀 智一(電通大) / 山口 留美子(秋田大) / Munehiro Kimura(Nagaoka Univ. of Tech.) |
Secretary | 木村 睦(NTT) / 志賀 智一(東工大) / 山口 留美子(Shizuoka Univ.) / Munehiro Kimura(Tohoku Univ.) |
Assistant | 奥野 武志(ファーウェイ) / 中田 充(NHK) / 野中 亮助(東芝) / Takuya Hasegawa(Koch Univ.) |
Paper Information | |
Registration To | Technical Committee on Electronic Information Displays / Technical Group on Information Display / * / Society for Information Display Japan Chapter / Technical Group 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) | [Poster Presentation] Improvement of luminescent characteristics by atmospheric post-annealing for Y4Si2O7N2:Eu3+ red phosphor synthesized in NH3 |
Sub Title (in English) | |
Keyword(1) | Y4Si2O7N2:Eu3+ |
Keyword(2) | red phosphor |
Keyword(3) | white LED |
Keyword(4) | CTS excitation band |
Keyword(5) | synthesis in NH3 |
1st Author's Name | Kodai Nakamoto |
1st Author's Affiliation | Tottori University(Tottori Unv.) |
2nd Author's Name | Misa Kawashima |
2nd Author's Affiliation | Tottori University(Tottori Unv.) |
3rd Author's Name | Ken Kinoshita |
3rd Author's Affiliation | Tottori University(Tottori Unv.) |
4th Author's Name | Yuichiro Hatanaka |
4th Author's Affiliation | Tottori University(Tottori Unv.) |
5th Author's Name | Tadashi Ishigaki |
5th Author's Affiliation | Tottori University(Tottori Unv.) |
6th Author's Name | Takashi Kunimoto |
6th Author's Affiliation | Tokushima Bunri University(Tokushima Bunri Univ.) |
7th Author's Name | Tetsuo Honma |
7th Author's Affiliation | Japan Synchrotron Radiation Research Institute(JASRI) |
8th Author's Name | Koutoku Ohmi |
8th Author's Affiliation | Tottori University(Tottori Unv.) |
Date | 2019-01-25 |
Paper # | EID2018-16 |
Volume (vol) | vol.118 |
Number (no) | EID-422 |
Page | pp.pp.109-112(EID), |
#Pages | 4 |
Date of Issue | 2019-01-17 (EID) |