Symmetrical contours of deep level EL2 in liquid encapsulated Czochralski GaAs
作者:
D. E. Holmes,
R. T. Chen,
K. R. Elliott,
C. G. Kirkpatrick,
期刊:
Applied Physics Letters
(AIP Available online 1983)
卷期:
Volume 43,
issue 3
页码: 305-307
ISSN:0003-6951
年代: 1983
DOI:10.1063/1.94294
出版商: AIP
数据来源: AIP
摘要:
We have determined the isoconcentration contours of the deep level EL2 across 3‐in.‐diam, semi‐insulating GaAs crystals grown by the liquid encapsulated Czochralski technique. The contours are essentially fourfold symmetric at the seed end of the crystals. The symmetrical pattern is independent of the melt stoichiometry and the relative direction of crystal and crucible rotation. EL2 distributions in the tail of the same crystals are often of lower symmetry. The results support a native defect model for EL2 in which the formation of the defect is enhanced by stress in the crystal.
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