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

✍ Scribed by Yuri Dmitriev; Paul R. Bennett; Leonard J. Cirignano; Tapan K. Gupta; William M. Higgins; Kanai S. Shah; Philip Wong

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 191 KB
• Volume: 578
• Category: Article
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2007.06.001

✦ Synopsis

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 -(PbBr 2 ) 0.078 crystals. The solubility of In and Pb in the liquid phase is higher than their solubility in solid TlBr: k s (In) ¼ 1.06 and k s (Pb) ¼ 1.3-1.6. Doping with both impurities leads to degradation of the electrical, optical, and detector properties of TlBr.