Cross relaxation of Sm3+ and energy transfer between Sm3+ and Eu3+ Ions in (Ca0.97Sr0.03)3(VO4)2 phosphor host

Chung Hao Chiang, Han Yu Lin, Sheng Yuan Chu

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

An attempt was made to verify that the inhibition of Sm3+→Eu3+ energy transfer in (Ca0.97Sr0.03)2.82(VO4)2:Sm3+,0.12Eu3+ phosphors at Sm3+ content levels of >0.06 mol can be ascribed to the cross-relaxation effect. The emission peak at around 951 nm attributed to the 6F11/26H5/2 transition of Sm3+, which should be barely detectable according to the energy-gap law, was observed in this work by exciting the 4K11/2 state of Sm3 +. The results indicate that cross-relaxation channels, which can depopulate the 4F3/2 state of Sm3+, such as 1st Sm3+ (4F3/2) + 2nd Sm3+ (6H5/2)→1st Sm3+ (6F11/2) + 2nd Sm3+ (6F5/2) and 1st Sm3+ (4F3/2) + 2nd Sm3+ (6H5/2)→1st Sm3+ (6F5/2) + 2nd Sm3+ (6F11/2), may form and become efficient at an Sm3+ doping level of 0.06 mol. It was found that the 951-nm emission suffered from concentration quenching, which resulted from a dipole-dipole multipolar interaction.

Original languageEnglish
Pages (from-to)3737-3739
Number of pages3
JournalJournal of the American Ceramic Society
Volume97
Issue number12
DOIs
Publication statusPublished - 2014 Dec

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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