Characterization of detector-grade CdZnTe:Al crystals obtained by annealing

✍ Scribed by Pengfei Yu; Yihui He; Tao Wang; Wanqi Jie

• Book ID: 104022408
• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 282 KB
• Volume: 324
• Category: Article
• ISSN: 0022-0248
• DOI: 10.1016/j.jcrysgro.2011.03.036

✦ Synopsis

Detector-grade CdZnTe:Al (CZT:Al) crystals were obtained by introducing Te antisites after annealing under Te atmosphere. Characterizations revealed that no inclusions were observed in both the as-grown and the annealed crystals. The resistivity and IR transmittance of annealed CZT:Al crystals were greatly enhanced. Moreover, (D 0 ,X) peak representing the quality of crystal appeared in PL spectrum of annealed crystal. 120 h annealed CZT:Al crystal with the energy resolution of 8.19% and mt value of 1.18 Â 10 À 3 cm 2 /V had the best detector performance.