標題: Effect of host compositions on the afterglow properties of phosphorescent strontium aluminate phosphors derived from the sol-gel method
作者: Chen, IC
Chen, TM
應用化學系
Department of Applied Chemistry
公開日期: 1-五月-2001
摘要: The effect of compositions of host precursors on the afterglow and phosphorescent decay properties of Eu2+- and Dy3+-coactivated strontium aluminates (SAED) synthesized by a sol-gel process has been investigated. A variety of strontium aluminates such as Sr3Al2O6, SrAl2O4, and SrAl12O19 have been identified in the samples prepared from starting precursors with Al/Sr ratios ranging from 1 to 12, respectively. The initial afterglow intensity (I-0) for SAED phases was found to vary with Al/Sr ratio of the sol-gel precursor, with a maximal I-0 appearing in the sample with Al/Sr of 2 in which SrAl2O4 dominated. The afterglow decay rate was found to be fastest for sample with Al/Sr ratio of 1:1 in which Sr3Al2O6 phase dominated. Moreover, the afterglow decay rates for those with Al/Sr ratio of 2:1 to 12:1, in which SrAl2O4 and SrAl12O19 dominated, were found to be slow and similar.
URI: http://hdl.handle.net/11536/29683
ISSN: 0884-2914
期刊: JOURNAL OF MATERIALS RESEARCH
Volume: 16
Issue: 5
起始頁: 1293
結束頁: 1300
顯示於類別:期刊論文


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  1. 000168494700014.pdf