Patent ID: 8860143

Claim:
A semiconductor structure with work function adjustment metal layer, comprising: a substrate; a gate dielectric layer formed on the substrate; a metal gate electrode layer formed on the gate dielectric layer; and at least one metal-containing adjusting layer for adjusting a work function of part of the semiconductor structure, wherein: one part of the metal-containing adjusting layer is formed in the gate dielectric layer, and the remaining part of the metal-containing adjusting layer is formed in the metal gate electrode layer; an interfacial layer is formed between the substrate and the gate dielectric laver, and first energy of a bond between a metal atom in the metal-containing adjusting layer and an oxygen atom is larger than second energy of a bond between an atom in the gate dielectric layer and an oxygen atom or third energy of a bond between an atom in the interfacial layer and an oxygen atom; the metal-containing adjusting layer is formed by implanting a metal ion, or the metal-containing adjusting layer is formed by atomic layer deposition, plasma enhanced chemical vapor deposition, or sputtering process; and an implantation depth of the metal-containing adjusting layer in a part of the semiconductor structure near a source and near a drain in the transversal direction of the semiconductor structure is larger than an implantation depth of the metal-containing adjusting layer in a middle part of the semiconductor structure in the transversal direction thereof.