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Proceedings Paper

Purification, crystal growth and detector performance of TlBr
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Paper Abstract

TlBr is a promising semiconductor for gamma-ray detection at room temperature, but it has to be extremely pure to become useful. We investigated the purification and crystal growth of TlBr to improve the mobility and lifetime of charge carriers, and produce TlBr detectors for radioisotopic detection. Custom equipment was built for purification and crystal growth of TlBr. The zone refining and crystal growth were done in a horizontal configuration. The process parameters were optimized and detector grade material with an electron mobility-lifetime product of up to 3x10-3 cm2/V has been produced. The material analysis and detector characterization results are included.

Paper Details

Date Published: 4 September 2008
PDF: 8 pages
Proc. SPIE 7079, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics X, 70790K (4 September 2008); doi: 10.1117/12.794838
Show Author Affiliations
Alexei V. Churilov, Radiation Monitoring Devices, Inc. (United States)
William M. Higgins, Radiation Monitoring Devices, Inc. (United States)
Guido Ciampi, Radiation Monitoring Devices, Inc. (United States)
Hadong Kim, Radiation Monitoring Devices, Inc. (United States)
Leonard J. Cirignano, Radiation Monitoring Devices, Inc. (United States)
Fred Olschner, Cremat, Inc. (United States)
Kanai S. Shah, Radiation Monitoring Devices, Inc. (United States)


Published in SPIE Proceedings Vol. 7079:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics X
Arnold Burger; Larry A. Franks; Ralph B. James, Editor(s)

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