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Computer Aided Synchrotron White Beam X-Ray Topographic Analysis of Multipolytype SiC Device Configurations

Published online by Cambridge University Press:  15 February 2011

W. Huang
Affiliation:
Dept. of Materials Science and Engineering, SUNY at SB, Stony Brook, NY11794–2275
S. Wang
Affiliation:
Dept. of Materials Science and Engineering, SUNY at SB, Stony Brook, NY11794–2275
M. Dudley
Affiliation:
Dept. of Materials Science and Engineering, SUNY at SB, Stony Brook, NY11794–2275
P. Neudeck
Affiliation:
Dept. of Materials Science and Engineering, SUNY at SB, Stony Brook, NY11794–2275
J. A. Powell
Affiliation:
NASA Lewis Research Center, 21000 Brookpark Road, MS 77–1, Cleveland, Ohio 44135
C. Fazi
Affiliation:
U.S. Army Research Laboratory, 2800 Powder Mill Road, Adelphi, MD 20783, USA
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Abstract

SiC device configurations comprising various polytypes have been analyzed using synchrotron white beam x-ray topography with the aid of computer simulation. Diffracted intensity maps for the various polytypes and their combinations in various diffraction geometries, including transmission, reflection, grazing-reflection and back-reflection are generated. This method is used to determine the structures of SiC devices fabricated via CVD epilayer growth of nominally 3C-SiC or 6H-SiC, or 6H-SiC substrates grown by the Lely technique. The work indicates that those devices which were initially considered to be of 3C structure also contain some 6H structure. Defect structures associated with the polytype configurations are also presented.

Type
Research Article
Copyright
Copyright © Materials Research Society 1995

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