Methods for fabricating semiconductor devices including surface treatment processes

    公开(公告)号:US10128148B2

    公开(公告)日:2018-11-13

    申请号:US15636889

    申请日:2017-06-29

    Abstract: Methods for fabricating semiconductor devices may provide enhanced performance and reliability by recovering quality of a low-k insulating film damaged by a plasma process. A method may include forming a first interlayer insulating film having a trench therein on a substrate, filling at least a portion of the trench with a metal wiring region, exposing a surface of the metal wiring region and a surface of the first interlayer insulating film to a plasma in a first surface treatment process, then exposing the surface of the first interlayer insulating film to a recovery gas containing a methyl group (—CH3) in a second surface treatment process, and then forming an etch stop layer on the metal wiring region and the first interlayer insulating film.

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