Investigation of the Effects of Parameters of Graphite Susceptor and Base Plate for Melting Process of Polycrystalline Silicon
| Autor: | Chen, Y.H., Chu, S.C., Lian, K.L., Lian, S.-S., Tsao, S. |
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| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: | |
| DOI: | 10.4229/25theupvsec2010-2cv.1.30 |
| Popis: | 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 1554-1557 Graphite susceptor and cooling base-plate play a key role in controlling the temperature of silicon melt in the induction melting of polycrystal silicon for solar cells. Different thickness and properties such as density and electrical conductivity of graphite susceptors could influence the heating effects of induction melting. These parameters have great influence not only on the melting temperature of silicon melt but also on the efficiency of induction heating, impurity distribution, dendrite and the direction of crystalline grains, which ultimately affect the properties of the solar cells. To have an optimized control of processing parameters, a finite element based software COMSOL was used to simulate the temperature distribution of silicon melt in a polycrystalline vacuum induction refining furnace. The simulation takes into account the interaction of the induced eddy current and the heat transfer coupling in the vacuum induction furnace. The simulation results show that the material properties of the graphite susceptor have great influence on the temperature distribution. Also, the cooling base plate made of stainless steel 304 performs better than the copper base plate for the temperature distribution. |
| Databáze: | OpenAIRE |
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