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

Authors :: Zhang, Fang
Chen, Shi
Zhang, Hailong L.
Li, Jun
Yang, Yan
Zhou, Guohong H.
Liu, Xuejian J.
Wang, Shiwei W.
Li, Y.
Source :: Journal of the American Ceramic Society; Jan2012, Vol. 95 Issue 1, p27-29, 3p, 2 Diagrams, 2 Graphs
Publication Year :: 2012
Abstract: A new composition of phosphor material AlON:Er<superscript>3+</superscript> codoped with Mg<superscript>2+</superscript> were prepared by solid-state reaction method. The effect of Mg<superscript>2+</superscript> dopants on upconversion luminescence properties of the AlON:Er<superscript>3+</superscript> phosphor was investigated. At certain concentrations, Mg<superscript>2+</superscript> dopants were found to greatly enhance the red emission intensity of AlON:Er<superscript>3+</superscript> phosphors. From our results, the enhancement of the emission intensity by Mg<superscript>2+</superscript> dopants was discussed in terms of the Er<superscript>3+</superscript> distribution in crystal lattice and crystal symmetry by introducing oxygen vacancy. [ABSTRACT FROM AUTHOR]