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2 November 2016 Evaluation of ZnO:Al as a contact material to CdZnTe for radiation detector applications (Conference Presentation)
Utpal N. Roy, Giuseppe S. Camarda, Yonggang Cui, Rubi Gul, Anwar Hossain, Ge Yang, Ralph B. James, Aswini K. Pradhan, Rajeh Mundle
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Proceedings Volume 9968, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XVIII; 99680O (2016) https://doi.org/10.1117/12.2240393
Event: SPIE Optical Engineering + Applications, 2016, San Diego, California, United States
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.
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Utpal N. Roy, Giuseppe S. Camarda, Yonggang Cui, Rubi Gul, Anwar Hossain, Ge Yang, Ralph B. James, Aswini K. Pradhan, and Rajeh Mundle "Evaluation of ZnO:Al as a contact material to CdZnTe for radiation detector applications (Conference Presentation)", Proc. SPIE 9968, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XVIII, 99680O (2 November 2016); https://doi.org/10.1117/12.2240393
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KEYWORDS
Metals
Sensors
Aluminum
Zinc oxide
Electrodes
Current controlled current source
Gamma radiation
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