摘要
本文采用有限元分析法，应用软件COMSOL，对Cd0.9Zn0.1Te（CZT）晶体垂直布里奇曼生长法进行模拟计算。为了研究固液界面过冷度的影响，通过改进传统的晶体生长模型只考虑热传导和热对流，加上了固液界面前沿过冷度的计算模型，组分过冷临界边界条件约束模型，研究分析了不同温度梯度和生长速率生长CZT晶体的曲率过冷度，组分过冷度，固液界面前沿的过冷度和热应力值。
Abstract The Cd0.9 Zn0.1Te crystal growth （LPVB - -Low Pressure Vertical Bridgman） was numerically simulated and analyzed by the simulation software of Comsol Mutiphysics. The traditional model only considers about heat conduction and convection. To study the effect of undercooling about solid - liquid interface, the undercooling model and the constitutional supercooling boundary constraint model have been added. The curvature findercooling, composition undercooling, forefront of solid - liquid interface undercooling and thermal stress have been analyzed with different temperature gradient and growth rates.
出处
《功能材料与器件学报》
CAS
CSCD
北大核心
2011年第5期513-519,共7页
Journal of Functional Materials and Devices
基金
国家自然科学基金（10675080）资助项目.上海市重点学科（$30107）资助项目
关键词
材料科学基础学科
数值模拟
组分过冷度
曲率过冷度
热应力
Foundational Discipline in Materials Science
Numerical Simulation
Constitutional Supercooling
Curvature Undercooling
Thermal Stress
