Investigation of annealing on Au/p-CdZnTe Contact

Gong, Hao; Sang, Wenbin; Min, Jiahua; Teng, Jianyong; Yue, Qian

doi:10.1109/icsict.2006.306607

Cited by 2 publications

(1 citation statement)

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“… 10 ). The CZT-metal contact is known to degrade at ~100 °C and above 11 12 causing increased leakage current of the detector and deterioration of its performance. In order to increase the throughput of fabricating high-quality detectors, we performed the AZO deposition process at a moderately low temperature of 85 °C.…”

Section: Resultsmentioning

confidence: 99%

Novel ZnO:Al contacts to CdZnTe for X- and gamma-ray detectors

Roy

Mundle

Camarda

et al. 2016

Sci Rep

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CdZnTe (CZT) has made a significant impact as a material for room-temperature nuclear-radiation detectors due to its potential impact in applications related to nonproliferation, homeland security, medical imaging, and gamma-ray telescopes. In all such applications, common metals, such as gold, platinum and indium, have been used as electrodes for fabricating the detectors. Because of the large mismatch in the thermal-expansion coefficient between the metal contacts and CZT, the contacts can undergo stress and mechanical degradation, which is the main cause for device instability over the long term. Here, we report for the first time on our use of Al-doped ZnO as the preferred electrode for such detectors. The material was selected because of its better contact properties compared to those of the metals commonly used today. Comparisons were conducted for the detector properties using different contacts, and improvements in the performances of ZnO:Al-coated detectors are described in this paper. These studies show that Al:ZnO contacts to CZT radiation detectors offer the potential of becoming a transformative replacement for the common metallic contacts due to the dramatic improvements in the performance of detectors and improved long-term stability.

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Section: Resultsmentioning

confidence: 99%