A sensitive x-ray storage phosphor based on BaFBr:Eu2+, KF/LiF with higher storage stability

被引：1

作者：

Sangeetha, L. ^{[1
]}

Lakshmanan, Arunachalam ^{[1
]}

机构：

[1] Saveetha Engn Coll, Chennai 602105, Tamil Nadu, India

来源：

RADIATION MEASUREMENTS | 2019年 / 129卷

关键词：

X-ray storage phosphor; BaFBr:Eu2+; Monovalent co-dopants; Synergistic flux action; High storage stability; Stimulated luminescence process; THERMALLY STIMULATED LUMINESCENCE; PHOTOSTIMULATED LUMINESCENCE; F-CENTERS; GENERATION; BAFBR-EU2+;

D O I：

10.1016/j.radmeas.2019.106209

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

A sensitive x-ray storage phosphor based on fluorine excess BaFBr:Eu2+KF/LiF possessing high storage stability has been synthesized. The electron-hole recombination process giving rise to photostimulated luminescence (PSL) is described. No red shift in the stimulation spectra on alkali co-doping and thus no electron trapping at the Br- vacancies beside the alkali compounds were observed. The enhanced photoluminescence (PL) and PSL efficiencies could very well be explained by the synergistic flux action of the co-dopant(s) and BaBr2 at 850 degrees C which increases the crystallinity and doping efficiency. Sintering temperatures >900 degrees C enhanced the luminescence efficiencies of BaFBr:Eu2+ and BaFBr:Eu2+,KBr due to thermal migration of F-i(-) ions.

引用

页数：9

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