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Control of Defects and Impurities in Production of CdZnTe Crystals by the Bridgman Method

Published online by Cambridge University Press:  10 February 2011

H. L. Glass ,
A. J. Socha ,
D. W. Bakken ,
V. M. Speziale  and
J. P. Flint
H. L. Glass
Affiliation:
Johnson Matthey Electronics, 15128 E. Euclid Ave., Spokane, WA 99216, [email protected]
A. J. Socha
Affiliation:
Johnson Matthey Electronics, 15128 E. Euclid Ave., Spokane, WA 99216, [email protected]
D. W. Bakken
Affiliation:
Johnson Matthey Electronics, 15128 E. Euclid Ave., Spokane, WA 99216, [email protected]
V. M. Speziale
Affiliation:
Johnson Matthey Electronics, 15128 E. Euclid Ave., Spokane, WA 99216, [email protected]
J. P. Flint
Affiliation:
Johnson Matthey Electronics, 15128 E. Euclid Ave., Spokane, WA 99216, [email protected]
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Abstract

Cadmium zinc telluride crystals were grown by vertical Bridgman processes using in situ compdunding from high purity elements into pyrolytic boron nitride crucibles within sealed fused quartz ampoules containing cadmium vapor at a pressure of roughly one atmosphere. These conditions produce material having the low etch pit density, low precipitate density, high infrared transmission and high purity required for use as substrates for infrared focal plane detector arrays fabricated in epitaxial mercury cadmium telluride. Similar processes should be satisfactory for producing cadmium zinc telluride for gamma ray detectors.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 484: Symposium F – Infrared Applications of Semiconductors II , 1997 , 335
Copyright
Copyright © Materials Research Society 1998

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