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Characterization of precipitates in CdTe and Cd(1-x)Zn(x)Te grown by vertical Bridgman-Stockbarger techniqueDifferent polishing solutions were tested for exposing precipitates in CdTe and Cd(0.96)Zn(0.04) single crystals grown by vertical Bridgman-Stockbarger technique. A solution of 5-7% Br2 in methanol and E-solution were both effective. High resolution scanning electron microscopy with energy dispersive spectroscopy (SEM/EDS) was employed to characterize those exposed precipitates. Most of the polyhedral-shaped Te precipitates with a size range from 3 to 20 microns had voids inside. Partially dissolved Te precipitates were observed in CdTe samples that had been annealed in Cd vapor at 700 C for 10 min. Isolated areas mis-oriented from the matrix were observed in CdTe and Cd(0.96)Zn(0.04)Te that had been annealed in Cd vapor at 700 C for 20 and 50 h, respectively. Te precipitate images were recorded with EDS. By SEM/EDS, Cd-rich precipitates were observed in some Cd-annealed CdTe. C and Na impurities were detected in some Te precipitates.
Document ID
19960016387
Acquisition Source
Headquarters
Document Type
Reprint (Version printed in journal)
Authors
Shen, J.
(Clarkson Univ. Potsdam, NY United States)
Aidun, D. K.
(Clarkson Univ. Potsdam, NY United States)
Regel, L.
(Clarkson Univ. Potsdam, NY United States)
Wilcox, W. R.
(Clarkson Univ. Potsdam, NY United States)
Date Acquired
August 17, 2013
Publication Date
January 1, 1993
Publication Information
ISSN: 0022-0248
Subject Category
Solid-State Physics
Report/Patent Number
NASA-CR-200324
NAS 1.26:200324
Accession Number
96N71039
Distribution Limits
Public
Copyright
Public Use Permitted.
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