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Title: Evaluation of CdZnTeSe as a high-quality gamma-ray spectroscopic material with better compositional homogeneity and reduced defects

Abstract

X- and gamma-ray detectors have broad applications ranging from medical imaging to security, non-proliferation, high-energy physics and astrophysics. Detectors with high energy resolution, e.g. less than 1.5% resolution at 662 keV at room temperature, are critically important in most uses. The efficacy of adding selenium to the cadmium zinc telluride (CdZnTe) matrix for radiation detector applications has been studied. In this paper, the growth of a new quaternary compound Cd 0.9Zn 0.1Te 0.98Se 0.02 by the Traveling Heater Method (THM) is reported. The crystals possess a very high compositional homogeneity with less extended defects, such as secondary phases and sub-grain boundary networks. Virtual Frisch-grid detectors fabricated from as-grown ingots revealed ~0.87-1.5% energy resolution for 662-keV gamma rays. The superior material quality with a very low density of defects and very high compositional homogeneity heightens the likelihood that Cd 0.9Zn 0.1Te 0.98Se 0.02 will be the next generation room-temperature detector material.

Authors:
 [1];  [1];  [1];  [1];  [1];  [2];  [2];  [2];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States)
  2. Charles Univ., Prague (Czech Republic). Inst. of Physics
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA), Office of Nonproliferation and Verification Research and Development (NA-22)
OSTI Identifier:
1504371
Report Number(s):
BNL-211497-2019-JAAM
Journal ID: ISSN 2045--2322
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 2045--2322
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Roy, Utpal N., Camarda, Giuseppe S., Cui, Yonggang, Gul, Rubi, Yang, Ge, Zazvorka, Jakub, Dedic, Vaclav, Franc, Jan, and James, Ralph B. Evaluation of CdZnTeSe as a high-quality gamma-ray spectroscopic material with better compositional homogeneity and reduced defects. United States: N. p., 2019. Web. doi:10.1038/s41598-019-43778-3.
Roy, Utpal N., Camarda, Giuseppe S., Cui, Yonggang, Gul, Rubi, Yang, Ge, Zazvorka, Jakub, Dedic, Vaclav, Franc, Jan, & James, Ralph B. Evaluation of CdZnTeSe as a high-quality gamma-ray spectroscopic material with better compositional homogeneity and reduced defects. United States. doi:10.1038/s41598-019-43778-3.
Roy, Utpal N., Camarda, Giuseppe S., Cui, Yonggang, Gul, Rubi, Yang, Ge, Zazvorka, Jakub, Dedic, Vaclav, Franc, Jan, and James, Ralph B. Tue . "Evaluation of CdZnTeSe as a high-quality gamma-ray spectroscopic material with better compositional homogeneity and reduced defects". United States. doi:10.1038/s41598-019-43778-3.
@article{osti_1504371,
title = {Evaluation of CdZnTeSe as a high-quality gamma-ray spectroscopic material with better compositional homogeneity and reduced defects},
author = {Roy, Utpal N. and Camarda, Giuseppe S. and Cui, Yonggang and Gul, Rubi and Yang, Ge and Zazvorka, Jakub and Dedic, Vaclav and Franc, Jan and James, Ralph B.},
abstractNote = {X- and gamma-ray detectors have broad applications ranging from medical imaging to security, non-proliferation, high-energy physics and astrophysics. Detectors with high energy resolution, e.g. less than 1.5% resolution at 662 keV at room temperature, are critically important in most uses. The efficacy of adding selenium to the cadmium zinc telluride (CdZnTe) matrix for radiation detector applications has been studied. In this paper, the growth of a new quaternary compound Cd0.9Zn0.1Te0.98Se0.02 by the Traveling Heater Method (THM) is reported. The crystals possess a very high compositional homogeneity with less extended defects, such as secondary phases and sub-grain boundary networks. Virtual Frisch-grid detectors fabricated from as-grown ingots revealed ~0.87-1.5% energy resolution for 662-keV gamma rays. The superior material quality with a very low density of defects and very high compositional homogeneity heightens the likelihood that Cd0.9Zn0.1Te0.98Se0.02 will be the next generation room-temperature detector material.},
doi = {10.1038/s41598-019-43778-3},
journal = {Scientific Reports},
number = 1,
volume = 9,
place = {United States},
year = {2019},
month = {4}
}

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This content will become publicly available on April 30, 2020
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