Photobleaching properties of YVO4:Eu3+ nanophosphors synthesized by hydrothermal treatment

Tetsuhito Muto, Satoru Takeshita, Tetsuhiko Isobe, Tomohiro Sawayama, Seiji Niikura

研究成果: Conference contribution

4 被引用数 (Scopus)

抄録

When YVO4:Eu3+ nanophosphors synthesized by a low-temperature wet chemical process in the presence of citrate ions are continuously excited by UV light, the photoluminescence (PL) intensity gradually decreases. This photobleaching is accompanied with the reduction of V 5+ to V4+, as confirmed by electron paramagnetic resonance spectroscopy. Hydrothermal treatment of YVO4:Eu3+ nanophosphors in the presence of PO43- ions produces Y(V, P)O 4:Eu3+ through the partial replacement berween VO4 3- and PO43-, and hence results in the increase in the PL intensity and the suppression of photobleaching.

本文言語English
ホスト出版物のタイトルECS Transactions - Physics and Chemistry of Luminescent Materials, Including the 4th Symposium on Persistent Phosphors
ページ135-140
ページ数6
31
出版ステータスPublished - 2009 11 25
イベントPhysics and Chemistry of Luminescent Materials, Including the 4th Symposium on Persistent Phosphors - 214th ECS Meeting - Honolulu, HI, United States
継続期間: 2008 10 122008 10 17

出版物シリーズ

名前ECS Transactions
番号31
16
ISSN(印刷版)1938-5862
ISSN(電子版)1938-6737

Other

OtherPhysics and Chemistry of Luminescent Materials, Including the 4th Symposium on Persistent Phosphors - 214th ECS Meeting
CountryUnited States
CityHonolulu, HI
Period08/10/1208/10/17

ASJC Scopus subject areas

  • Engineering(all)

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