Control of Large-size SiC Growth Process Using Modeling tool

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	Control of Large-size SiC Growth Process Using Modeling tool
	Chen QS(陈启生)
	2004-08-09
会议名称	14th International Conference on Crystal Growth (ICCG-14, ICVGE-12),Aug. 9-13, 2004, Grenoble, France
通讯作者	陈启生
中文摘要	Large size bulk silicon carbide (SiC) crystals are commonly grown by the physical vapor transport (PVT) method. The PVT growth of SiC crystals involves sublimation and condensation, chemical reactions, stoichiometry, mass transport, induced thermal stress, as well as defect and micropipes generation and propagation. The quality and polytype of as-grown SiC crystals are related to the temperature distribution inside the growth chamber during the growth process, it is critical to predict the temperature distribution from the measured temperatures outside the crucible by pyrometers. A radio-frequency induction-heating furnace was used for the growth of large-size SiC crystals by the PVT method in the present study. Modeling and simulation have been used to develop the SiC growth process and to improve the SiC crystal quality. Parameters such as the temperature measured at the top of crucible, temperature measured at the bottom of the crucible, and inert gas pressure are used to control the SiC growth process. By measuring the temperatures at the top and bottom of the crucible, the temperatures inside the crucible were predicted with the help of modeling tool. SiC crystals of 6H polytype were obtained and characterized by the Raman scattering spectroscopy and SEM, and crystals of few millimeter size grown inside the crucible were found without micropipes. Expansion of the crystals were also performed with the help of modeling and simulation.
会议录	Proceedings of the 14th International Conference on Crystal Growth (ICCG-14, ICVGE-12),2004, p.289
学科主题	力学
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/13797]
专题	力学研究所_力学所知识产出(1956-2008)
通讯作者	Chen QS(陈启生)
推荐引用方式 GB/T 7714	Chen QS. Control of Large-size SiC Growth Process Using Modeling tool[C]. 见:14th International Conference on Crystal Growth (ICCG-14, ICVGE-12),Aug. 9-13, 2004, Grenoble, France.