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Title: Growth of detector-grade CZT by Traveling Heater Method (THM): An advancement

Abstract

In this present work we report the growth of Cd{sub 0.9}Zn{sub 0.1}Te doped with In by a modified THM technique. It has been demonstrated that by controlling the microscopically flat growth interface, the size distribution and concentration can be drastically reduced in the as-grown ingots. This results in as-grown detector-grade CZT by the THM technique. The three-dimensional size distribution and concentrations of Te inclusions/precipitations were studied. The size distributions of the Te precipitations/inclusions were observed to be below the 10-{micro}m range with the total concentration less than 10{sup 5} cm{sup -3}. The relatively low value of Te inclusions/precipitations results in excellent charge transport properties of our as-grown samples. The ({mu}{tau}){sub e} values for different as-grown samples varied between 6-20 x 10{sup -3} cm{sup 2}/V. The as-grown samples also showed fairly good detector response with resolution of {approx}1.5%, 2.7% and about 3.8% at 662 keV for quasi-hemispherical geometry for detector volumes of 0.18 cm{sup 3}, 1 cm{sup 3} and 4.2 cm{sup 3}, respectively.

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
DOE - NATIONAL NUCLEAR SECURITY ADMINISTRATION
OSTI Identifier:
1020946
Report Number(s):
BNL-95068-2011-CP
NN2001000; TRN: US201116%%971
DOE Contract Number:  
DE-AC02-98CH10886
Resource Type:
Conference
Resource Relation:
Conference: 2011 MRS Spring Meeting and Exhibit; San Francisco, CA; 20110425 through 20110429
Country of Publication:
United States
Language:
English
Subject:
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; CHARGE TRANSPORT; DISTRIBUTION; GEOMETRY; HEATERS; RESOLUTION; CZT; Traveling Heater Method (THM); inclusions; precipitations

Citation Formats

ROY, U N, JAMES, R, WEILER, S, STEIN, J, GROZA, M, BURGER, A, BOLOTNIKOV, A E, CAMARDA, G S, HOSSAIN, A, and YANG, G. Growth of detector-grade CZT by Traveling Heater Method (THM): An advancement. United States: N. p., 2011. Web.
ROY, U N, JAMES, R, WEILER, S, STEIN, J, GROZA, M, BURGER, A, BOLOTNIKOV, A E, CAMARDA, G S, HOSSAIN, A, & YANG, G. Growth of detector-grade CZT by Traveling Heater Method (THM): An advancement. United States.
ROY, U N, JAMES, R, WEILER, S, STEIN, J, GROZA, M, BURGER, A, BOLOTNIKOV, A E, CAMARDA, G S, HOSSAIN, A, and YANG, G. Mon . "Growth of detector-grade CZT by Traveling Heater Method (THM): An advancement". United States. https://www.osti.gov/servlets/purl/1020946.
@article{osti_1020946,
title = {Growth of detector-grade CZT by Traveling Heater Method (THM): An advancement},
author = {ROY, U N and JAMES, R and WEILER, S and STEIN, J and GROZA, M and BURGER, A and BOLOTNIKOV, A E and CAMARDA, G S and HOSSAIN, A and YANG, G},
abstractNote = {In this present work we report the growth of Cd{sub 0.9}Zn{sub 0.1}Te doped with In by a modified THM technique. It has been demonstrated that by controlling the microscopically flat growth interface, the size distribution and concentration can be drastically reduced in the as-grown ingots. This results in as-grown detector-grade CZT by the THM technique. The three-dimensional size distribution and concentrations of Te inclusions/precipitations were studied. The size distributions of the Te precipitations/inclusions were observed to be below the 10-{micro}m range with the total concentration less than 10{sup 5} cm{sup -3}. The relatively low value of Te inclusions/precipitations results in excellent charge transport properties of our as-grown samples. The ({mu}{tau}){sub e} values for different as-grown samples varied between 6-20 x 10{sup -3} cm{sup 2}/V. The as-grown samples also showed fairly good detector response with resolution of {approx}1.5%, 2.7% and about 3.8% at 662 keV for quasi-hemispherical geometry for detector volumes of 0.18 cm{sup 3}, 1 cm{sup 3} and 4.2 cm{sup 3}, respectively.},
doi = {},
url = {https://www.osti.gov/biblio/1020946}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {4}
}

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