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Crystal Growth of CdTe by Gradient Freeze in Universal Multizone Crystallizator (UMC)In the case of unsealed melt growth of an array of II-VI compounds, namely, CdTe, CdZnTe and ZnSe, there is a tremendous amount of experimental data describing the correlations between melt conditions and crystal quality. The results imply that the crystallinity quality can be improved if the melt was markedly superheated or long-time held before growth. It is speculated that after high superheating the associated complex dissociate and the spontaneous nucleation is retarded. In this study, crystals of CdTe were grown from melts which have undergone different thermal history by the unseeded gradient freeze method using the Universal Multizone Crystallizator (UMC). The effects of melt conditions on the quality of grown crystal were studied by various characterization techniques, including Synchrotron White Beam X-ray Topography (SWSXT), infrared microscopy, chemical analysis by glow discharge mass spectroscopy (GDMS), electrical conductivity and Hall measurements.
Document ID
20040170450
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Su, Ching-Hua
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Lehoczky, S. L.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Li, C.
(Alabama Univ. Birmingham, AL, United States)
Knuteson, D.
(BAE Systems United States)
Raghothamachar, B.
(State Univ. of New York Stony Brook, NY, United States)
Dudley, M.
(State Univ. of New York Stony Brook, NY, United States)
Szoke, J.
(Admatis Ltd. Unknown)
Barczy, P.
(Miskolc Univ. Miskolc-Egyetemvarous, Hungary)
Date Acquired
August 22, 2013
Publication Date
January 1, 2004
Subject Category
Chemistry And Materials (General)
Meeting Information
Meeting: 4th International Conference on Solidification and Gravity
Location: Miskolc
Country: Hungary
Start Date: September 6, 2004
End Date: September 10, 2004
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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