Chinese Journal of Applied Chemistry

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Improved Luminescence Properties of Cerium-doped Yttrium Aluminum Garnet Phosphor Through Post-processing

ZHOU Jun, LEI Xiaomin, WANG Xiao*, LUO Wei, JIAO Huan*   

  1. (School of Chemistry & Chemical Engineering,Shaanxi Normal University,Xi′an 710062,China)
  • Received:2013-07-25 Revised:2013-11-04 Published:2014-05-10 Online:2014-05-10
  • Contact: Huan

Abstract: In this work, a series of post-processing experiments was conducted on cerium-doped yttrium aluminum garnet(YAG∶Ce3+) yellow phosphor in order to improve their luminescent properties. Several kinds of alkali, e.g., ammonia, N,N-dimethylacetamide(DMAC), triethanolamine and polyacrylamide, were selected as post-processing reagents. Effect of the type, the concentration of the post-processing reagent, and the soaking on the PL intensity of YAG∶Ce3+ were investigated in details. The optimum condition is to soak the phosphor in a 30% ammonia solution for 50 min at 50 ℃. The PL intensity of the phosphor increased about 9.5%, and the agglomeration among particles decreased after post-process.

Key words: cerium-doped yttrium aluminum garnet, phosphor, post-processing, luminescent intensity

CLC Number: