Thallium Chalcohalides for X-ray and γ-ray Detection

被引:102
作者
Johnsen, Simon [2 ]
Liu, Zhifu [3 ]
Peters, John A. [3 ]
Song, Jung-Hwan [1 ]
Sandy Nguyen [2 ]
Malliakas, Christos D. [2 ]
Jin, Hosub [1 ]
Freeman, Arthur J. [1 ]
Wessels, Bruce W. [3 ]
Kanatzidis, Mercouri G. [2 ]
机构
[1] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA
[2] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA
[3] Northwestern Univ, Mat Res Ctr, Dept Mat Sci & Engn, Evanston, IL 60208 USA
关键词
SEMICONDUCTOR RADIATION DETECTORS; IODIDE; CDZNTE; TLBR; BR; CL; CRYSTALS; HGI2;
D O I
10.1021/ja202540t
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
We report that the chalcohalide compound Tl6SeI4 is a promising material for efficient X-ray and gamma-ray detection. This material has a higher figure of merit than the current state-of-the-art material for room-temperature operation, Cd0.9Zn0.1Te (CZT). We have synthesized high-quality single-crystalline wafers of Tl6SeI4 with detector-grade resistivities and good carrier transport of both electrons and holes. We demonstrate that pulse height spectra recorded using Co-57 radiation show an energy resolution matching that of a commercial CZT detector material.
引用
收藏
页码:10030 / 10033
页数:4
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