Research on annealing and properties of TlBr crystals for radiation detector use

• DOI: 10.1016/j.nima.2013.12.049
• Publication Date: 2014-01-02T21:51:14Z
• Authors: Zheng Zhiping; Yu Yongtao; Zhou Dongxiang; Gong Shuping; Fu Qiuyun
• Keywords: 03 medical and health sciences; 0302 clinical medicine

Abstract In this paper, annealing was carried out in air after cutting, polishing and etching to eliminate defects introduced by crystal and wafer preparation work. The effect of annealing temperature and time on the properties of TlBr crystals was investigated. The crystal quality was characterized by infrared (IR) transmittance spectrum, I–V measurement, XRD and energy response spectrum. In the annealing temperature range (100–320 °C) applied, it was found that higher temperature was more effective for improving quality. Furthermore, it is proved that an appropriate annealing time is vital for better crystal quality.