Semiconductor structure
    2.
    发明授权

    公开(公告)号:US11177172B2

    公开(公告)日:2021-11-16

    申请号:US16685948

    申请日:2019-11-15

    Abstract: A semiconductor structure includes a substrate, a gate structure disposed over the substrate, a source/drain structure disposed in the substrate at two sides of the gate structure, and a conductive plug. The source/drain structure includes an epitaxial layer and a dual metal silicide on the epitaxial layer. The epitaxial layer includes a first semiconductor material and a second semiconductor material. A lattice constant of the second semiconductor material is greater than a lattice constant of the first semiconductor material. The dual metal silicide includes the first semiconductor material, the second semiconductor material, a first metal material and a second metal material. An atomic size of the second metal material is greater than an atomic size of the first metal material. The conductive plug penetrates the dual metal silicide.

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