Photoresist and Method
    57.
    发明公开

    公开(公告)号:US20230154750A1

    公开(公告)日:2023-05-18

    申请号:US17674575

    申请日:2022-02-17

    CPC classification number: H01L21/0332 H01L21/0337 H01L21/0276 G03F7/405

    Abstract: Photoresists and methods of forming and using the same are disclosed. In an embodiment, a method includes spin-on coating a first hard mask layer over a target layer; depositing a photoresist layer over the first hard mask layer using chemical vapor deposition or atomic layer deposition, the photoresist layer being deposited using one or more organometallic precursors; heating the photoresist layer to cause cross-linking between the one or more organometallic precursors; exposing the photoresist layer to patterned energy; heating the photoresist layer to cause de-crosslinking in the photoresist layer forming a de-crosslinked portion of the photoresist layer; and removing the de-crosslinked portion of the photoresist layer.

    Source/drain isolation structures for leakage prevention

    公开(公告)号:US11532702B2

    公开(公告)日:2022-12-20

    申请号:US16877800

    申请日:2020-05-19

    Abstract: The present disclosure is directed to gate-all-around (GAA) transistor structures with a low level of leakage current and low power consumption. For example, the GAA transistor includes a semiconductor layer with a first source/drain (S/D) epitaxial structure and a second S/D epitaxial structure disposed thereon, where the first and second S/D epitaxial structures are spaced apart by semiconductor nano-sheet layers. The semiconductor structure further includes isolation structures interposed between the semiconductor layer and each of the first and second S/D epitaxial structures. The GAA transistor further includes a gate stack surrounding the semiconductor nano-sheet layers.

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