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Abstract
Research & Development in Material Science
Calculation of Carrier Distribution, Space Charge Accumulation, and Internal Electric Field Distribution in CdZnTe Detectors under Extremely High X-Ray Doses
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Open or CloseXiangxiang Luo, Zhuotong Du, Gangqiang Zha, Lingyan Xu and Wanqi Jie*
State Key Laboratory of Solidification Processing, China
*Corresponding author: Wanqi Jie, State Key Laboratory of Solidification Processing, and MIIT Key Laboratory of Radiation Detection Materials and Devices, China
Submission: January 23, 2019; Published: January 29, 2019
ISSN: 2576-8840Volume9 Issue4
Abstract
We calculated the carrier density, space charge and internal electric field distribution in CdZnTe planar detectors with the consideration of four kinds of defect traps to understand its detection properties under ultrahigh X-ray flux. The results showed that severe space charge collection occurred, and the internal electric field was distorted when the X-ray flux was ultrahigh. This could strongly influence detector performance.
Keywords:Carrier distribution; X-ray detector; CdZnTe crystal
PACS:66.30.J-, 72.20.Jv, 71.55.Gs
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