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

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationECS Transactions - Physics and Chemistry of Luminescent Materials, Including the 4th Symposium on Persistent Phosphors
Pages135-140
Number of pages6
Edition31
Publication statusPublished - 2009 Nov 25
EventPhysics and Chemistry of Luminescent Materials, Including the 4th Symposium on Persistent Phosphors - 214th ECS Meeting - Honolulu, HI, United States
Duration: 2008 Oct 122008 Oct 17

Publication series

NameECS Transactions
Number31
Volume16
ISSN (Print)1938-5862
ISSN (Electronic)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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  • Cite this

    Muto, T., Takeshita, S., Isobe, T., Sawayama, T., & Niikura, S. (2009). Photobleaching properties of YVO4:Eu3+ nanophosphors synthesized by hydrothermal treatment. In ECS Transactions - Physics and Chemistry of Luminescent Materials, Including the 4th Symposium on Persistent Phosphors (31 ed., pp. 135-140). (ECS Transactions; Vol. 16, No. 31).