SOLIDIFICATION OF CRYSTALLINE SILICON FROM REUSABLE CRUCIBLE MOLDS
摘要
A process for making silicon ingots using a multi-part, reusable, graphite crucible of at least two mold pieces configured for assembly into an open top mold having an interior surface functional as a mold cavity for receiving molten silicon; removing or reducing a prior applied release coating from the interior surface until a uniformly smooth finish is achieved; coating the interior surface with a first layer of release coating comprising silicon nitride; coating the interior surface with a second layer of release coat comprising silica suspended in water; coating the interior surface with a third layer of release coat comprising silicon nitride; curing the release coat on said crucible; casting a silicon ingot in the crucible; and then repeating the prior steps multiple times.
申请公布号
WO2006107769(A3)
申请公布日期
2007.12.21
申请号
WO2006US12017
申请日期
2006.03.31
申请人
GT SOLAR INCORPORATED;PARTHASARATHY, SANTHANA RAGHAVAN;WAN, YUEPENG;CHARTIER, CARL;TALBOTT, JONATHAN, A.;GUPTA, KEDAR, P.
发明人
PARTHASARATHY, SANTHANA RAGHAVAN;WAN, YUEPENG;CHARTIER, CARL;TALBOTT, JONATHAN, A.;GUPTA, KEDAR, P.