Possibilities of CdTe-based X/γ-ray detectors with MoOx contacts

O. L. Maslyanchuk, M. M. Solovan, V. V. Kulchynsky, V. V. Brus, P. D. Maryanchuk, I. M. Fodchuk, V. A. Gnatyuk, T. Aoki, C. Potinadis, Y. Kaissas

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Transport properties of the CdTe X/y-ray detectors prepared by the deposition of molybdenum oxide thin films by DC reactive magnetron sputtering onto semi-insulating p-type single-crystal CdTe were studied. Current-voltage characteristics of both detectors with two Ohmic contacts and barrier structure were investigated at different temperatures. The conduction mechanism in the MoOx.p-CdTe/MoOx heteroj unction is dominated by generation-recombination in the space-charge region. The Schottky barrier height, concentration of uncompensated impurities and charge carrier lifetime were determined from the comparison of the experimental and calculated results. Finally, the spectra of the miAm isotope measured by the detectors are presented. It is shown that the Mo-MoOx.p-CdTe/MoOxMo structures can be used as X/γ-ray detector in the spectrometric mode.

Original languageEnglish
Title of host publication2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509016426
DOIs
Publication statusPublished - Oct 16 2017
Externally publishedYes
Event2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016 - Strasbourg, France
Duration: Oct 29 2016Nov 6 2016

Publication series

Name2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016
Volume2017-January

Conference

Conference2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016
CountryFrance
CityStrasbourg
Period10/29/1611/6/16

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Instrumentation
  • Nuclear and High Energy Physics
  • Electronic, Optical and Magnetic Materials

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