Integrated circuits with separate workfunction material layers and methods for fabricating the same

Integrated circuits employing replacement metal gate technologies with separate workfunction material layers and raised source/drain structures and methods for fabricating the same are disclosed herein. In one exemplary embodiment, a method of fabricating an integrated circuit includes forming a fir...

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Bibliographische Detailangaben
Hauptverfasser: JAKUBOWSKI FRANK, FAUL JUERGEN
Format: Patent
Sprache:eng
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Zusammenfassung:Integrated circuits employing replacement metal gate technologies with separate workfunction material layers and raised source/drain structures and methods for fabricating the same are disclosed herein. In one exemplary embodiment, a method of fabricating an integrated circuit includes forming a first workfunction material layer over an ILD layer, along the sidewall spacer structures, and over the high-k material layer. The method further includes forming a masking layer over the first workfunction material layer, performing a tilted ion implant wherein ions are implanted at the masking layer over the ILD layer and along the sidewall spacer structures, selectively etching the masking layer and the first workfunction material from over the ILD layer and from along the sidewall spacer structures, and forming a second workfunction material layer over the ILD layer, along the sidewall spacer structures, and over the first workfunction material layer.