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Indexed by:会议论文

Date of Publication:2010-06-26

Included Journals:EI、CPCI-S、Scopus

Volume:675-677

Page Number:1311-1314

Key Words:multicrystalline silicon; Si3N4 coating; minority-carrier lifetime

Abstract:The Si3N4 protective coating has an important impact on avoiding melting silicon from contacting with the crucible wall directly. A mixed Si/Si3N4 layer was formed on the interface of silicon and Si3N4 coating, and the declination of N content was observed in this mixed layer. With the ingots condition of 1500 degrees C for 2 h, the large Si3N4 and SiC particles appeared in the mixed layer and the formation mechanism was discussed. The Si3N4 coating had significantly increased the lifetime of minority carriers by decreasing impurity content.