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Title: Characterization of large-volume Frisch grid detector fabricated from as-grown CdZnTeSe

Abstract

CdZnTe (CZT) has been under continuous development as a room-temperature radiation detector for the past 2-3 decades. Due to its intrinsic defects, such as a high concentration sub-grain boundary network, it has been very challenging to consistently produce high-quality CZT detectors with high yield, particularly for detector volumes exceeding a few cm 3. In this paper, we report characterization of a relatively large-volume Frisch-grid detector (dimensions: 11x10.8x19.4 mm 3) fabricated from a new material Cd 0.9Zn 0.1Te 0.985Se 0.015. Furthermore, the detector was fabricated from an as-grown ingot with a two-inch diameter grown by the Traveling Heater Method (THM). The detector sample was evaluated by infrared (IR) transmission microscopy to study the presence of Te inclusions. X-ray topography using a synchrotron light source was deployed to measure the presence of sub-grain boundaries and their networks. Finally, the detector performance was measured for an optimized Frisch-grid length to extract the best energy resolution at room temperature.

Authors:
ORCiD logo [1];  [2];  [2];  [2]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States); Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
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); USDOE
OSTI Identifier:
1579480
Alternate Identifier(s):
OSTI ID: 1577885
Report Number(s):
BNL-212393-2019-JAAM
Journal ID: ISSN 0003-6951
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 115; Journal Issue: 24; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Roy, Utpal N., Camarda, Giuseppe S., Cui, Yonggang, and James, Ralph B. Characterization of large-volume Frisch grid detector fabricated from as-grown CdZnTeSe. United States: N. p., 2019. Web. doi:10.1063/1.5133389.
Roy, Utpal N., Camarda, Giuseppe S., Cui, Yonggang, & James, Ralph B. Characterization of large-volume Frisch grid detector fabricated from as-grown CdZnTeSe. United States. doi:10.1063/1.5133389.
Roy, Utpal N., Camarda, Giuseppe S., Cui, Yonggang, and James, Ralph B. Mon . "Characterization of large-volume Frisch grid detector fabricated from as-grown CdZnTeSe". United States. doi:10.1063/1.5133389.
@article{osti_1579480,
title = {Characterization of large-volume Frisch grid detector fabricated from as-grown CdZnTeSe},
author = {Roy, Utpal N. and Camarda, Giuseppe S. and Cui, Yonggang and James, Ralph B.},
abstractNote = {CdZnTe (CZT) has been under continuous development as a room-temperature radiation detector for the past 2-3 decades. Due to its intrinsic defects, such as a high concentration sub-grain boundary network, it has been very challenging to consistently produce high-quality CZT detectors with high yield, particularly for detector volumes exceeding a few cm3. In this paper, we report characterization of a relatively large-volume Frisch-grid detector (dimensions: 11x10.8x19.4 mm3) fabricated from a new material Cd0.9Zn0.1Te0.985Se0.015. Furthermore, the detector was fabricated from an as-grown ingot with a two-inch diameter grown by the Traveling Heater Method (THM). The detector sample was evaluated by infrared (IR) transmission microscopy to study the presence of Te inclusions. X-ray topography using a synchrotron light source was deployed to measure the presence of sub-grain boundaries and their networks. Finally, the detector performance was measured for an optimized Frisch-grid length to extract the best energy resolution at room temperature.},
doi = {10.1063/1.5133389},
journal = {Applied Physics Letters},
number = 24,
volume = 115,
place = {United States},
year = {2019},
month = {12}
}

Journal Article:
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