Highly sensitive optical thermometry of Yb3+-Er3+ codoped AgLa(MoO4)2 green upconversion phosphor

Ting Li, Chongfeng Guo*, Shaoshuai Zhou, Changkui Duan, Min Yin

*Corresponding author for this work

Research output: Contribution to journalArticle

45 Citations (Scopus)


Er3+-Yb3+ codoped AgLa(MoO4)2 phosphors with intense green emission from 2H11/2/4S3/24I15/2 transitions and negligible red emission from 4F9/24I15/2 transition of Er3+ were synthesized by sol-gel process. Its temperature sensing performance was evaluated based on the temperature dependence of fluorescence intensity ratio (FIR) of two green emission bands in the range 300-510 K. The maximum sensitivity of AgLa(MoO4)2: 0.02Er3+/0.4Yb3+ is approximately 0.018 K-1 at 480 K, which is much higher than those of reported samples based on green emissions of Er3+. Result suggests that AgLa(MoO4)2: Er3+/Yb3+ has a great potential application in optical temperature sensors.

Original languageEnglish
Pages (from-to)2812-2816
Number of pages5
JournalJournal of the American Ceramic Society
Issue number9
Publication statusPublished - 1 Sep 2015

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