Preliminary study of non-isothermal phase change phenomena in vertical Bridgman crystal growth
Preliminary study of non-isothermal phase change phenomena in vertical Bridgman crystal growth
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DOI：
10.1007/s11434-007-0102-7
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发表时间：
2007-03
影响因子：
--
通讯作者：
Liu Jie;Lu Wenqiang
中科院分区：
文献类型：
--
作者：
Liu Jie;Lu Wenqiang
Axisymmetric dual reciprocity boundary element method (DRBEM) with augmented items is extended to simulate the heat and mass transfer problems in the vertical Bridgman method (VBM) crystal growth of HgCdTe and CdZnTe. Axial solute concentration redistribution of three regions numerically reappears, and the influence of the pulling rate of the ampoule on it is further studied. Secondly, one dimensional transient phase change phenomena is studied, and non-isothermal phase change phenomena is obtained from the initial transient region through the steady growth region to the final transient region. Thirdly, the two-dimensional axisymmetric phase change interface position, interfacial shape and the temperature field of the melt and the crystal are numerically captured under the condition to arrive at the steady state with zero pulling rate of the ampoule. Finally, the study of transient axisymmetric non-isothermal phase change phenomena is stressed and the results are compared with those in isothermal phase change. The influence of the pulling rate on non-isothermal phase change phenomena is revealed.
