18-22 February 2019
Vienna University of Technology
Europe/Vienna timezone

Study of metal contacts on Cd1-xZnxTe and Cd1-xMnxTe crystals for radiation detector applications

Not scheduled
20m
Vienna University of Technology

Vienna University of Technology

Gusshausstraße 27-29, 1040 Wien
Board: 74
Poster Semiconductor Detectors Poster Session A

Speaker

Mr Artem Brovko (Tel Aviv University, School of EE)

Description

This work describes a comprehensive study of metal contacts on single crystals of II-VI group semiconductors, Cd1-xZnxTe and Cd1-xMnxTe. Both materials are candidates for numerous detector applications, while the former is more established, the latter has potential advantages. In this work we formed metal contacts on high resistivity Bridgman grown Cd1-xZnxTe and Cd1-xMnxTe crystals by thermal evaporation method. Usage of different contact materials and various surface preparation processes of the Me-Semiconductor interface allowed a comprehensive comparison of the resulting performance of obtained devices. The characterization of the detectors included varied techniques such: I-V measurements, noise PSD (Power Spectral Density), determination of the activation energy (temperature behavior), etc. The results of comparison reveal the advantages and drawbacks of produced detectors. This work emphasizes the pronounced potential of Cd1-xMnxTe crystals for radiation detectors.

Primary authors

Mr Artem Brovko (Tel Aviv University, School of EE) Prof. Arie Ruzin (Tel Aviv University (IL))

Presentation Materials