Doping impact on the electro-optical properties of a TlBr crystal

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• 作者：Yuri Dmitriev ; Paul R. Bennett ; Leonard J. Cirignano ; Tapan K. Gupta ; William M. Higgins ; Kanai S. Shah ; Philip Wong
• 关键词：Doping ; Electric conductivity ; Segregation coefficient ; Thallium bromide ; X-ray
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2007
• 出版时间：11 August 2007
• 年：2007
• 卷：578
• 期：3
• 页码：510-514
• 全文大小：190 K

文摘

TlBr doped with In and Pb was synthesized and grown using a vertical Bridgman method. The segregation coefficients of both dopants in TlBr were calculated using the different experimental optical and electrical characteristics of (TlBr)_0.973–(InBr)_0.027 and (TlBr)_0.972–(PbBr₂)_0.078 crystals. The solubility of In and Pb in the liquid phase is higher than their solubility in solid TlBr: k_s(In)=1.06 and k_s(Pb)=1.3–1.6. Doping with both impurities leads to degradation of the electrical, optical, and detector properties of TlBr.