发明名称 Post rinse to improve selective deposition of electroless cobalt on copper for ULSI application
摘要 A method for depositing a passivation layer on a substrate surface using one or more electroplating techniques is provided. Embodiments of the method include selectively depositing an initiation layer on a conductive material by exposing the substrate surface to a first electroless solution, depositing a passivating material on the initiation layer by exposing the initiation layer to a second electroless solution, and cleaning the substrate surface with an acidic solution. In another aspect, the method includes applying ultrasonic or megasonic energy to the substrate surface during the application of the acidic solution. In still another aspect, the method includes using the acidic solution to remove between about 100 Å and about 200 Å of the passivating material. In yet another aspect, the method includes cleaning the substrate surface with a first acidic solution prior to the deposition of the initiation layer.
申请公布号 US2004087141(A1) 申请公布日期 2004.05.06
申请号 US20020284855 申请日期 2002.10.30
申请人 APPLIED MATERIALS, INC. 发明人 RAMANATHAN SIVAKAMI;PADHI DEENESH;GANDIKOTA SRINIVAS;DIXIT GIRISH A.
分类号 B05D1/40;B05D3/00;C23C18/16;C23C18/31;C23C18/44;C23C18/50;C23G1/10;H01L21/288;H01L21/302;H01L21/31;H01L21/44;H01L21/461;H01L21/768;(IPC1-7):H01L21/44 主分类号 B05D1/40
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