The electrical properties and defect levels of Al doped CdZnTe crystal for detector applications

Ruihua Nan, Wanqi Jie, Gangqiang Zha, Weihua Liu, Yadong Xu, Li Fu, Tao Wang

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

CdZnTe (CZT) is one of the most promising materials for room-temperature X-ray and Gamma-ray detectors. The electrical properties of CZT crystal decide the performance of CZT detector to a large degree. For high quality CZT crystal using as detector, both high resistivity and high carrier transport properties are necessary. In this paper, the electrical properties and defect levels of Al-doped CZT (CZT:Al) crystal were discussed. Utilizing the thermally stimulated current (TSC) spectroscope measurement, the defect levels in CZT:Al crystal and their level-model were determined and inferred. The carrier transport properties of the CZT:Al were charactered with the carrier mobility-lifetime (μτ) products determined by the peak channel of 241 Am alpha particle 5.48 MeV spectrum as a function of the bias voltage. Fitted by the single carrier Hecht equation, the μτ for the electron was evaluated to be 4.6×10-4cm2·V-1.

源语言英语
主期刊名International Symposium on Photoelectronic Detection and Imaging 2009 - Terahertz and High Energy Radiation Detection Technologies and Applications
73850U
DOI
出版状态已出版 - 2009
活动International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications - Beijing, 中国
期限: 17 6月 200919 6月 2009

出版系列

姓名Proceedings of SPIE - The International Society for Optical Engineering
7385
ISSN(印刷版)0277-786X

会议

会议International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications
国家/地区中国
Beijing
时期17/06/0919/06/09

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