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Proceedings Paper

Evaluation of ZnO:Al as a contact material to CdZnTe for radiation detector applications (Conference Presentation)

Paper Abstract

Aluminum (Al) doped ZnO with very high Al concentration acts as metal regarding its electrical conductivity. ZnO offers many advantages over the commonly-known metals being used today as electrode materials for nuclear detector fabrication. Often, the common metals show poor adhesion to CdZnTe or CdTe surfaces and have a tendency to peel off. In addition, there is a large mismatch of the coefficients of thermal expansion (CTE) between the metals and underlying CdZnTe, which is one of the reasons for mechanical degradation of the contact. In contrast ZnO has a close match of the CTE with CdZnTe and possesses 8-20 times higher hardness than the commonly-used metals. In this presentation, we will explore and discuss the properties of CdZnTe detectors with ZnO:Al contacts.

Paper Details

Date Published: 2 November 2016
PDF: 1 pages
Proc. SPIE 9968, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XVIII, 99680O (2 November 2016); doi: 10.1117/12.2240393
Show Author Affiliations
Utpal N. Roy, Brookhaven National Lab. (United States)
Giuseppe S. Camarda, Brookhaven National Lab. (United States)
Yonggang Cui, Brookhaven National Lab. (United States)
Rubi Gul, Brookhaven National Lab. (United States)
Anwar Hossain, Brookhaven National Lab. (United States)
Ge Yang, Brookhaven National Lab. (United States)
Ralph B. James, Brookhaven National Lab. (United States)
Aswini K. Pradhan, Norfolk State Univ. (United States)
Rajeh Mundle, Norfolk State Univ. (United States)

Published in SPIE Proceedings Vol. 9968:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XVIII
Ralph B. James; Michael Fiederle; Arnold Burger; Larry Franks, Editor(s)

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