| Paper Abstract and Keywords |
| Presentation |
2026-01-30 10:30
[Poster Presentation]
Characteristic Evaluation of Rare Earth Doped Ultraviolet Emitting Phosphors
Kotaro Murata, Masaki Yasuda, Kanta Ito, Hiroko Kominami, Kazuhiko Hara (Shizuoka Univ.), Akihiro Yamaji (Tohoku Univ.), Shunsuke Kurosawa (Tokyo Univ.) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
This study investigates the luminescent properties of Y2O3- and YF3-based phosphors doped with Ce, Gd, and Pr, aiming to develop novel ultraviolet-emitting materials for EL lamp applications. Samples containing 5 mol% of each rare-earth element were synthesized and characterized using cathodoluminescence (CL) and photoluminescence excitation (PLE) measurements. The results revealed that YF3 hosts exhibit distinct ultraviolet emissions originating from Ce3+, Gd3+, and Pr3+, with Gd3+ showing a dominant excitation pathway independent of emission wavelength. In contrast, Y2O3 hosts displayed broad emissions primarily from the matrix, with limited rare-earth-specific transitions. These findings indicate that YF3 is a promising host material for stable ultraviolet emission. Future work will focus on optimizing dopant species and concentrations, controlling annealing conditions and particle size, and developing thin-film fabrication processes to enable practical EL device applications. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Rare-earth doped phosphors / YF3 host material / Ultraviolet emission, Cathodoluminescence (CL) / Photoluminescence excitation (PLE) / / / / |
| Reference Info. |
ITE Tech. Rep., vol. 50, no. 2, IDY2026-21, pp. 81-84, Jan. 2026. |
| Paper # |
IDY2026-21 |
| Date of Issue |
2026-01-22 (IDY) |
| ISSN |
Online edition: ISSN 2424-1970 |
| Download PDF |
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| Conference Information |
| Committee |
IEICE-EID IDY IEE-EDD SID-JC IEIJ-SSL |
| Conference Date |
2026-01-29 - 2026-01-30 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
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| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
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| Paper Information |
| Registration To |
IDY |
| Conference Code |
2026-01-EID-IDY-EDD-JC-SSL |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
Characteristic Evaluation of Rare Earth Doped Ultraviolet Emitting Phosphors |
| Sub Title (in English) |
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| Keyword(1) |
Rare-earth doped phosphors |
| Keyword(2) |
YF3 host material |
| Keyword(3) |
Ultraviolet emission, Cathodoluminescence (CL) |
| Keyword(4) |
Photoluminescence excitation (PLE) |
| Keyword(5) |
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| 1st Author's Name |
Kotaro Murata |
| 1st Author's Affiliation |
Shizuoka University (Shizuoka Univ.) |
| 2nd Author's Name |
Masaki Yasuda |
| 2nd Author's Affiliation |
Shizuoka University (Shizuoka Univ.) |
| 3rd Author's Name |
Kanta Ito |
| 3rd Author's Affiliation |
Shizuoka University (Shizuoka Univ.) |
| 4th Author's Name |
Hiroko Kominami |
| 4th Author's Affiliation |
Shizuoka University (Shizuoka Univ.) |
| 5th Author's Name |
Kazuhiko Hara |
| 5th Author's Affiliation |
Shizuoka University (Shizuoka Univ.) |
| 6th Author's Name |
Akihiro Yamaji |
| 6th Author's Affiliation |
Tohoku University (Tohoku Univ.) |
| 7th Author's Name |
Shunsuke Kurosawa |
| 7th Author's Affiliation |
Tokyo University (Tokyo Univ.) |
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| Speaker |
Author-1 |
| Date Time |
2026-01-30 10:30:00 |
| Presentation Time |
5 minutes |
| Registration for |
IDY |
| Paper # |
IDY2026-21 |
| Volume (vol) |
vol.50 |
| Number (no) |
no.2 |
| Page |
pp.81-84 |
| #Pages |
4 |
| Date of Issue |
2026-01-22 (IDY) |