Field effect transistor including channel formed of 2D material

    公开(公告)号:US11532709B2

    公开(公告)日:2022-12-20

    申请号:US17203010

    申请日:2021-03-16

    Abstract: A field effect transistor includes a substrate, a source electrode and a drain electrode on the substrate and apart from each other in a first direction, a plurality of channel layers, a gate insulating film surrounding each of the plurality of channel layers, and a gate electrode surrounding the gate insulating film. Each of the plurality of channel layers has ends contacting the source electrode and the drain electrode. The plurality of channel layers are spaced apart from each other in a second direction away from the substrate. The plurality of channel layers include a 2D semiconductor material.

    SEMICONDUCTOR DEVICES HAVING BURIED GATES

    公开(公告)号:US20220077154A1

    公开(公告)日:2022-03-10

    申请号:US17318563

    申请日:2021-05-12

    Abstract: A semiconductor device includes a substrate including an active region, a gate structure disposed in a gate trench in the substrate, a bit line disposed on the substrate and electrically connected to the active region on one side of the gate structure, and a capacitor disposed on the bit line and electrically connected to the active region on another side of the gate structure. The gate structure includes a gate dielectric layer disposed on bottom and inner side surfaces of the gate trench, a conductive layer disposed on the gate dielectric layer in a lower portion of the gate trench, sidewall insulating layers disposed on the gate dielectric layer, on an upper surface of the conductive layer, a graphene conductive layer disposed on the conductive layer, and a buried insulating layer disposed between the sidewall insulating layers on the graphene conductive layer.

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