Upconversion Luminescence of γ-AlON:Er3+ Phosphors with Mg2+ Co-Doping

Authors


  • Supported by Natural Science Foundation of China (Grant Nos. 50802106 and 50672113) and Postdoctoral Science Foundation of China (Grant No. 20070420676).

Author to whom correspondence should be addressed. e-mail: swwang51@mail.sic.ac.cn.

Abstract

A new composition of phosphor material AlON:Er3+ codoped with Mg2+ were prepared by solid-state reaction method. The effect of Mg2+ dopants on upconversion luminescence properties of the AlON:Er3+ phosphor was investigated. At certain concentrations, Mg2+ dopants were found to greatly enhance the red emission intensity of AlON:Er3+ phosphors. From our results, the enhancement of the emission intensity by Mg2+ dopants was discussed in terms of the Er3+ distribution in crystal lattice and crystal symmetry by introducing oxygen vacancy.

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