%0 Journal Article
%T Effect of Al/Sr Ratio on Properties of Strontium Aluminate Long Lasting Phosphor
%A LUAN Lin
%A GUO Chong-Feng
%A HUANG De-Xiu
%J 无机材料学报
%D 2009
%I Science Press
%R 10.3724/sp.j.1077.2009.00053
%X The relation between properties of strontium aluminate phosphor and Al/Sr ratio was investigated. A series of strontium aluminate phosphors with different Al/Sr ratios from 1.0 to 12.0 were synthesized by solid-state method. The samples were characterized by X-ray diffraction and photoluminescence spectra. The results reveal that single phases of SrAl2O4:Eu2+,Dy3+, Sr4Al14O25:Eu2+,Dy3+ and SrAl12O19:Eu2+,Dy3+ are obtained with Al/Sr ratios of 2.0, 3.5 and 10.0 respectively. When Al/Sr selects other values, the final products are mixture. Moreover, the emission spectra of the samples shift to blue-ultraviolet short wavelength from yellow-green long wave with the increase of Al/Sr ratios, which result from change of products ˉ composition.
%K aluminate
%K long afterglow
%K Al/Sr
%U http://www.jim.org.cn/fileup/PDF/20090111.pdf