Hybrid fin structure of semiconductor device and method of forming same

    公开(公告)号:US12148672B2

    公开(公告)日:2024-11-19

    申请号:US17581611

    申请日:2022-01-21

    Abstract: A semiconductor device and a method of forming the same are provided. A device includes a substrate, a first isolation structure over the substrate, a first fin and a second fin over the substrate and extending through the first isolation structure, and a hybrid fin extending into the first isolation structure and interposed between the first fin and the second fin. A top surface of the first fin and a top surface of the second fin are above a top surface of the first isolation structure. A top surface of the hybrid fin is above the top surface of the first isolation structure. The hybrid fin includes an upper region, and a lower region under the upper region. The lower region includes a seam. A topmost portion of the seam is below the top surface of the first fin and the top surface of the second fin.

    Seamless Gap Fill
    5.
    发明申请
    Seamless Gap Fill 审中-公开

    公开(公告)号:US20180350906A1

    公开(公告)日:2018-12-06

    申请号:US16043244

    申请日:2018-07-24

    Abstract: A method includes depositing a first dielectric layer in an opening, the first dielectric layer comprising a semiconductor element and a non-semiconductor element. The method further includes depositing a semiconductor layer on the first dielectric layer, the semiconductor layer comprising a first element that is the same as the semiconductor element. The method further includes introducing a second element to the semiconductor layer wherein the second element is the same as the non-semiconductor element. The method further includes applying a thermal annealing process to the semiconductor layer to change the semiconductor layer into a second dielectric layer.

    Seamless Gap Fill
    6.
    发明申请

    公开(公告)号:US20220157934A1

    公开(公告)日:2022-05-19

    申请号:US17588478

    申请日:2022-01-31

    Abstract: A method includes depositing a first dielectric layer in an opening, the first dielectric layer comprising a semiconductor element and a non-semiconductor element. The method further includes depositing a semiconductor layer on the first dielectric layer, the semiconductor layer comprising a first element that is the same as the semiconductor element. The method further includes introducing a second element to the semiconductor layer wherein the second element is the same as the non-semiconductor element. The method further includes applying a thermal annealing process to the semiconductor layer to change the semiconductor layer into a second dielectric layer.

    Seamless gap fill
    7.
    发明授权

    公开(公告)号:US11239310B2

    公开(公告)日:2022-02-01

    申请号:US16889401

    申请日:2020-06-01

    Abstract: A method includes depositing a first dielectric layer in an opening, the first dielectric layer comprising a semiconductor element and a non-semiconductor element. The method further includes depositing a semiconductor layer on the first dielectric layer, the semiconductor layer comprising a first element that is the same as the semiconductor element. The method further includes introducing a second element to the semiconductor layer wherein the second element is the same as the non-semiconductor element. The method further includes applying a thermal annealing process to the semiconductor layer to change the semiconductor layer into a second dielectric layer.

    FORMATION AND IN-SITU TREATMENT PROCESSES FOR GAP FILL LAYERS

    公开(公告)号:US20190341294A1

    公开(公告)日:2019-11-07

    申请号:US16517934

    申请日:2019-07-22

    Abstract: The present disclosure relates to a semiconductor device and a manufacturing method, and more particularly to a semiconductor device having an enhanced gap fill layer in trenches. The present disclosure provides a novel gap fill layer formed using a multi-step deposition and in-situ treatment process. The deposition process can be a flowable chemical vapor deposition (FCVD) utilizing one or more assist gases and molecules of low reactive sticking coefficient (RSC). The treatment process can be an in-situ process after the deposition process and includes exposing the deposited gap fill layer to plasma activated assist gas. The assist gas can be formed of ammonia. The low RSC molecule can be formed of trisilylamin (TSA) or perhydropolysilazane (PHPS).

Patent Agency Ranking