Structures for tuning threshold voltage

    公开(公告)号:US11610822B2

    公开(公告)日:2023-03-21

    申请号:US16925893

    申请日:2020-07-10

    Abstract: A semiconductor device includes a first gate structure that includes a first interfacial layer, a first gate dielectric layer disposed over the first interfacial layer, and a first gate electrode disposed over the first gate dielectric layer. The semiconductor device also includes a second gate structure that includes a second interfacial layer, a second gate dielectric layer disposed over the second interfacial layer, and a second gate electrode disposed over the second gate dielectric layer. The first interfacial layer contains a different amount of a dipole material than the second interfacial layer.

    BARRIER LAYER FOR METAL INSULATOR METAL CAPACITORS

    公开(公告)号:US20220367606A1

    公开(公告)日:2022-11-17

    申请号:US17815524

    申请日:2022-07-27

    Abstract: The present disclosure is directed to a method for the fabrication of MiM capacitor structures with metallic electrodes having nitrogen-rich metal nitride layers. The method includes depositing a first electrode bilayer on a first interconnect disposed on a substrate, where the first electrode includes a first layer and a second layer with a different nitrogen concentration. The method also includes depositing a dielectric layer on the first electrode bilayer and depositing a second electrode bilayer on the first interconnect where the second electrode includes a third layer and a fourth layer with a different nitrogen concentration. The method further includes patterning the first electrode bilayer, the dielectric layer, and the second electrode bilayer to form a capacitor structure on the first interconnect layer.

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