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

Roy, Utpal N.; Camarda, Giuseppe S.; Cui, Yonggang; Gul, Rubi; Yang, Ge; Zazvorka, Jakub; Dedic, Vaclav; Franc, Jan; James, Ralph B.

doi:10.1038/s41598-019-43778-3

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

Journal Article · Mon May 13 00:00:00 EDT 2019 · Scientific Reports

DOI:https://doi.org/10.1038/s41598-019-43778-3· OSTI ID:1504371

Roy, Utpal N. ^[1]; Camarda, Giuseppe S. ^[1]; Cui, Yonggang ^[1]; Gul, Rubi ^[1]; Yang, Ge ^[1]; Zazvorka, Jakub ^[2]; Dedic, Vaclav ^[2]; Franc, Jan ^[2]; James, Ralph B. ^[1]

Brookhaven National Lab. (BNL), Upton, NY (United States)
Charles Univ., Prague (Czech Republic). Inst. of Physics

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.

View Accepted Manuscript (DOE)

Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States); Savannah River Site (SRS), Aiken, SC (United States); Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)

Sponsoring Organization:: USDOE; USDOE National Nuclear Security Administration (NNSA), Office of Nonproliferation and Verification Research and Development (NA-22)

Grant/Contract Number:: AC09-08SR22470; SC0012704

OSTI ID:: 1504371

Alternate ID(s):: OSTI ID: 1574673

Report Number(s):: BNL--211497-2019-JAAM; SRNL-STI--2019-00206

Journal Information:: Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 9; ISSN 2045-2322

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Study of CdZnTeSe Gamma-Ray Detector under Various Bias Voltages Drabo, Mebougna L.; Egarievwe, Stephen U.; Roy, Utpal N. Materials Sciences and Applications, Vol. 11, Issue 08 https://doi.org/10.4236/msa.2020.118036	journal	January 2020
Characterization of large-volume Frisch grid detector fabricated from as-grown CdZnTeSe Roy, Utpal N.; Camarda, Giuseppe S.; Cui, Yonggang Applied Physics Letters, Vol. 115, Issue 24 https://doi.org/10.1063/1.5133389	journal	December 2019

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