SEMICONDUCTOR DEVICE WITH ISOLATION STRUCTURES

    公开(公告)号:US20210265220A1

    公开(公告)日:2021-08-26

    申请号:US17006161

    申请日:2020-08-28

    Abstract: A method of fabricating a semiconductor device with superlattice structures on a substrate with an embedded isolation structure is disclosed. The method includes forming an etch stop layer on a substrate, forming a superlattice structure on the etch stop layer, depositing an isolation layer on the superlattice structure, depositing a semiconductor layer on the isolation layer, forming a bi-layer isolation structure on the semiconductor layer, removing the substrate and the etch stop layer, etching the superlattice structure, the isolation layer, the semiconductor layer, and the bi-layer isolation structure to form a fin structure, and forming a gate-all-around structure on the fin structure.

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