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Title: Purification of CdZnTe by Electromigration

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.4917460· OSTI ID:1224178
 [1];  [2];  [3];  [3];  [4];  [2];  [4];  [4]
  1. Korea Univ., Seoul (South Korea)
  2. Korea Univ., Sejong (South Korea)
  3. AbyzR Corp., Gyeonggi (South Korea)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States)
+ Show Author Affiliations

Electro-migration of ionized/electrically active impurities in CdZnTe (CZT) was successfully demonstrated at elevated temperature with an electric field of 20 V/mm. Copper, which exists in positively charged states, electro-migrated at a speed of 15 lm/h in an electric field of 20 V/mm. A notable variation in impurity concentration along the growth direction with the segregation tendency of the impurities was observed in an electro-migrated CZT boule. Notably, both Ga and Fe, which exist in positively charged states, exhibited the opposite distribution to that of their segregation tendency in Cd(Zn)Te. Furthermore, a CZT detector fabricated from the middle portion of the electromigrated CZT boule showed an improved mobility-lifetime product of 0.91 10-2 cm2 /V, compared to that of 1.4 10-3 cm2 /V, observed in an as-grown (non-electro-migrated) CZT detector. The optimum radiation detector material would have minimum concentration of deep traps required for compensation.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA), Office of Nonproliferation and Verification Research and Development (NA-22); USDOE
Grant/Contract Number:
SC00112704
OSTI ID:
1224178
Alternate ID(s):
OSTI ID: 1228597
Report Number(s):
BNL-108136-2015-JA; NN2001; TRN: US1500783
Journal Information:
Journal of Applied Physics, Vol. 117, Issue 14; ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 20 works
Citation information provided by
Web of Science

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Cited By (6)

Two-dimensional (PEA) 2 PbBr 4 perovskite single crystals for a high performance UV-detector journal January 2019
Detection of gamma photons using solution-grown single crystals of hybrid lead halide perovskites text January 2016
Highly sensitive X-ray detector made of layered perovskite-like (NH4)3Bi2I9 single crystal with anisotropic response journal June 2019
Exploring Lead‐Free Hybrid Double Perovskite Crystals of (BA) 2 CsAgBiBr 7 with Large Mobility‐Lifetime Product toward X‐Ray Detection journal September 2019
Exploring Lead‐Free Hybrid Double Perovskite Crystals of (BA) 2 CsAgBiBr 7 with Large Mobility‐Lifetime Product toward X‐Ray Detection journal September 2019
Detection of gamma photons using solution-grown single crystals of hybrid lead halide perovskites journal July 2016

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