Optical properties of annealed lead-tungstate single crystals

被引：0

作者：

Kim, T ^{[1
]}

机构：

[1] Jeonju Natl Univ Educ, Dept Sci Educ, Jeonju 560757, South Korea

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2005年 / 46卷 / 06期

关键词：

PbWO4; thermoluminescence; defects; annealing; optical absorption;

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

PbWO4 single crystals were grown in argon by using the Czochralski method and annealed in air. The thermoluminescence (TL) peaks below 110 K originate from intrinsic defect centers generated during growth, and those above 154 K are related to a local oxygen excess. The 420-nm absorption bands of annealed PbWO4 are related to the annealing temperature. The TL emission spectrum of as-grown PbWO4 mainly originate from the WO3 associated with oxygen vacancies or F-centers and that of annealed PbWO4 is due to the WO42- complex interacting with O2- owing to oxygen diffusion during the annealing process. The correlation between annealing and luminescence shows that structural defects are greatly influenced by the post-growth annealing.

引用

页码：1371 / 1374

页数：4

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