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Characterization of CdZnTeSe Nuclear Detector Chemically Etched in Bromine Methanol

Journal Article · · Materials Sciences and Applications
 [1];  [2];  [3];  [4];  [5];  [6];  [2];  [7]
  1. Federal Univ. of Petroleum Resources, Effurun (Nigeria)
  2. Alabama A&M Univ., Huntsville, AL (United States)
  3. Alabama A&M Univ., Huntsville, AL (United States); Univ. of South Alabama, Mobile, AL (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States); Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)
  5. Stanford Univ., CA (United States)
  6. Alabama A&M Univ., Huntsville, AL (United States); Univ. of South Alabama, Mobile, AL (United States)
  7. Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)
Semiconductor nuclear radiation detectors made from tertiary and quaternary compounds of cadmium telluride (CdTe) can operate at room temperature without cryogenic cooling. One of such materials that have become of great interest is cadmium zinc telluride selenide (CdZnTeSe). Compared to other CdTe-based materials, such as cadmium zinc telluride (CdZnTe), CdZnTeSe can be grown with much less Te inclusions and sub-grain boundary networks. Chemical etching is often used to smoothen wafer surfaces during detector fabrication. This paper presents the characterization of CdZnTeSe that is chemically etched using bromine methanol solution. Infrared imaging shows that the wafer has no sub-grain boundary networks that often limit detector performance. The current-voltage (I-V) characterization experiment gave a resistivity of 4.6 × 1010 Ω-cm for the sample. The I-V curve was linear in the ±10 to ±50 volts range. An energy resolution of 7.2% was recorded at 100 V for the 59.6-keV gamma line of 241Am.
Research Organization:
Savannah River National Lab (SRNL), Aiken, SC (United States); Savannah River Site (SRS), Aiken, SC (United States)
Sponsoring Organization:
USDOE Office of Environmental Management (EM)
Grant/Contract Number:
89303321CEM000080
OSTI ID:
1828521
Report Number(s):
SRNL-STI--2021-00321
Journal Information:
Materials Sciences and Applications, Journal Name: Materials Sciences and Applications Journal Issue: 08 Vol. 12; ISSN 2153-117X
Publisher:
Scientific Research Publishing, Inc.Copyright Statement
Country of Publication:
United States
Language:
English

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