Photostimulation redshift for nonstoichiometric Ba1-xSrxFBr:Eu2+

被引：20

作者：

Dietze, C ^{[1
]}

Hangleiter, T ^{[1
]}

Willems, P ^{[1
]}

Leblans, PJR ^{[1
]}

Struye, L ^{[1
]}

Spaeth, JM ^{[1
]}

机构：

[1] AGFA GEVAERT NV,B-2640 MORTSEL,BELGIUM

来源：

JOURNAL OF APPLIED PHYSICS | 1996年 / 80卷 / 02期

关键词：

D O I：

10.1063/1.362843

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The oxygen-free x-ray storage phosphor BaFBr, doped with Sr2+ and having Br- vacancies due to fluorine excess, is shown to have a high photostimulability shifted appreciably to lower photon energy compared to nondoped BaFBr because of the predominant generation of F-A(Sr2+) centers on the Br- sublattice upon room-temperature x irradiation. The F-A(Br-,Sr2+) centers are less stable than unperturbed F(Br-) centers3. Therefore, the redshift of the photostimulability disappears upon thermal activation above room temperature. From the failure to observe an F center infrared emission, it is concluded that F and F-A centers are spatially correlated to hole centers of yet unknown nature. (C) 1996 American Institute of Physics.

引用

页码：1074 / 1078

页数：5

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