EFFECT OF VIBRATIONAL STIRRING ON THE QUALITY OF BRIDGMAN-GROWN CDTE

被引:33
作者
LU, YC [1 ]
SHIAU, JJ [1 ]
FEIGELSON, RS [1 ]
ROUTE, RK [1 ]
机构
[1] STANFORD UNIV,CTR MAT RES,STANFORD,CA 94305
基金
美国国家科学基金会;
关键词
D O I
10.1016/0022-0248(90)90846-D
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
The coupled vibrational stirring (CVS) method was applied to the vertical Bridgman growth of CdTe. This new stirring method involves orthogonally coupling a set of low frequency transverse vibrations to a growth ampoule. The motion imparted to the ampoule gives rise to rapid, controlled spiral flows. Dopant distributions in CVS grown, phosphorous-doped CdTe boules were studied by measuring free carrier concentrations. CVS improved the chemical homogeneity of Bridgman-grown crystals. From the isoconcentration curves, the growth interface was observed to be much flatter than in boules grown without CVS, which is desirable to minimize radial strain. Some degradation in microstructure was detected from the CVS processing conditions used in these experiments. This effect needs to be studied further. © 1990.
引用
收藏
页码:807 / 813
页数:7
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