Crystal defects and charge collection in CdTe-based x- and gamma-ray detectors

O. Maslyanchuk; I. Fodchuk; M. Solovan; I. Boledzyuk; A. Kuzmin; V. Gnatyuk; T. Aoki

doi:10.1117/12.2615504

20 December 2021 Crystal defects and charge collection in CdTe-based x- and gamma-ray detectors

O. Maslyanchuk, I. Fodchuk, M. Solovan, I. Boledzyuk, A. Kuzmin, V. Gnatyuk, T. Aoki

Proceedings Volume 12126, Fifteenth International Conference on Correlation Optics; 121260K (2021) https://doi.org/10.1117/12.2615504
Event: Fifteenth International Conference on Correlation Optics, 2021, Chernivtsi, Ukraine

Abstract

The defects structure, charge collection, and detection efficiency of the Ni(NiO)/p-CdTe/Au/Cu Schottky-diode detector have been investigated. The spectroscopic properties of the obtained heterostructures have been studied experimentally and analyzed theoretically. The optimal reverse bias voltage for higher performance of the detectors under study was determined. The reasons of poor charge collection in the detectors and low detection efficiency of photons emitted by an ²⁴¹Am (59.5 keV) radioisotope have been established and discussed. The techniques of increasing the functional parameters of Ni(NiO)/p-CdTe/Au/Cu Schottky diodes have the investigated and the optimal ways for improvement of the detector performance have been formulated.

Citation Download Citation

O. Maslyanchuk, I. Fodchuk, M. Solovan, I. Boledzyuk, A. Kuzmin, V. Gnatyuk, and T. Aoki "Crystal defects and charge collection in CdTe-based x- and gamma-ray detectors", Proc. SPIE 12126, Fifteenth International Conference on Correlation Optics, 121260K (20 December 2021); https://doi.org/10.1117/12.2615504

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