发明名称 Methods of forming hemispherical grain polysilicon
摘要 In one aspect, the invention encompasses a semiconductor processing method comprising contacting a surface with a liquid solution comprising at least one fluorine-containing species and a temperature of at least about 40° C. In another aspect, the invention encompasses a method of passivating a silicon-comprising layer comprising contacting the layer with a liquid solution comprising hydrogen fluoride and a temperature of at least about 40° C. In yet another aspect, the invention encompasses a method of forming hemispherical grain polysilicon comprising: a) forming a layer comprising substantially amorphous silicon over a substrate; b) contacting the layer comprising substantially amorphous silicon with a liquid solution comprising fluorine-containing species and a temperature of at least about 40° C.; c) seeding the layer comprising substantially amorphous silicon; and d) annealing the seeded layer to convert at least a portion of the seeded layer to hemispherical grain polysilicon.
申请公布号 US6344418(B1) 申请公布日期 2002.02.05
申请号 US20000501802 申请日期 2000.02.09
申请人 MICRON TECHNOLOGY, INC. 发明人 PING ER-XUAN;LI LI
分类号 C09K13/06;H01L21/02;H01L21/306;(IPC1-7):H01L21/00 主分类号 C09K13/06
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