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Vapor Growth and Characterization of Cr-Doped ZnSe CrystalsCr-doped ZnSe single crystals were grown by a self-seeded physical vapor transport technique in both vertical (stabilized) and horizontal configurations. The source materials were mixtures of ZnSe and CrSe. Growth temperatures were in the range of 1140-1150 C and the furnace translation rates were 1.9-2.2 mm/day. The surface morphology of the as-grown crystals was examined by scanning electron microscopy (SEM) and atomic force microscopy (AFM). Different features of the as-grown surface of the vertically and horizontally grown crystals suggest that different growth mechanisms were involved in the two growth configurations. The [Cr] doping levels were determined to be in the range of 1.8-8.3 x 10 (exp 19) cm (exp -3) from optical absorption measurements. The crystalline quality of the grown crystals were examined by high-resolution triple-crystal X-ray diffraction (HRTXD) analysis.
Document ID
20000012408
Document Type
Reprint (Version printed in journal)
Authors
Su, Ching-Hua
(NASA Marshall Space Flight Center Huntsville, AL United States)
Feth, Shari
(NASA Marshall Space Flight Center Huntsville, AL United States)
Volz, M. P.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Matyi, R.
(Wisconsin Univ. Madison, WI United States)
George, M. A.
(Alabama Univ. Huntsville, AL United States)
Chattopadhyay, K.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Burger, A.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Lehoczky, S. L.
(NASA Marshall Space Flight Center Huntsville, AL United States)
Date Acquired
August 19, 2013
Publication Date
January 1, 1999
Publication Information
Publication: Journal of Crystal Growth
Publisher: Elsevier Science B.V.
Volume: 207
ISSN: 0022-0248
Subject Category
Solid-State Physics
Funding Number(s)
CONTRACT_GRANT: NCC8-145
CONTRACT_GRANT: NCC8-133
CONTRACT_GRANT: B336497
Distribution Limits
Public
Copyright
Other

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