Thermodynamic Fundamental of Purification of Silicon
Along with the rapid development in photovoltaic market, silicon is used to produce solar cell more than 90％ as the starting material for crystalline silicon wafers. This article is to discuss the academic thermodynamics in the process of silicon purification, which contains acid leaching, vacuum refining, directional solidification. The feasibility in this process was discussed based on thermodynamics and phase diagrams. Besides, authors have done some experiments on metallography to prove the process. The purpose is in order to do some favor for update existing silicon refining technology, and seek a low - cost process to produce solar grade silicon (SOG - Si) which is different with SIEMENS technique.
silicon purification solar grade silicon thermodynamic
XU Wen-ting MA Wen-hui YANG Bin DAI Yong-nian
Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology//National Engineering Laboratory of Vacuum Metallurgy, Kunming 650093, China
国际会议
北京
英文
88-90
2006-08-03（万方平台首次上网日期，不代表论文的发表时间）