Resistive random access memory integrated under a vertical field effect transistor

    公开(公告)号:US11355553B2

    公开(公告)日:2022-06-07

    申请号:US16704245

    申请日:2019-12-05

    摘要: A semiconductor structure may include a vertical field effect transistor, the vertical field effect transistor may include a top source drain, a bottom source drain, and an epitaxial channel and a resistive random access memory below the vertical field effect transistor. The resistive random access memory may include an epitaxial oxide layer, a top electrode, and a bottom electrode. The top electrode, which may function as the bottom source drain of the vertical field effect transistor, may be in direct contact with the epitaxial channel of the vertical field effect transistor. The epitaxial oxide layer may separate the top electrode from the bottom electrode. The top source drain may be arranged between a dielectric material and the epitaxial channel. The dielectric material may be in direct contact with a top surface of the epitaxial channel. The epitaxial oxide layer may be composed of a rare earth oxide.

    VERTICAL TRANSISTOR WITH BODY CONTACT
    7.
    发明申请

    公开(公告)号:US20200273967A1

    公开(公告)日:2020-08-27

    申请号:US16284422

    申请日:2019-02-25

    IPC分类号: H01L29/66 H01L29/78 H01L21/28

    摘要: A method for manufacturing a semiconductor device includes forming a fin on a semiconductor substrate, and forming a bottom source/drain region adjacent a base of the fin. In the method, a dielectric layer, a work function metal layer and a first gate metal layer are sequentially deposited on the bottom source/drain region and around the fin. The dielectric layer, the work function metal layer and the first gate metal layer form a gate structure. The method also includes removing the dielectric layer, the work function metal layer and the first gate metal layer from an end portion of the fin, and depositing a second gate metal layer around the end portion of fin in place of the removed dielectric layer, the removed work function metal layer and the removed first gate metal layer. The second gate metal layer contacts the end portion of the fin.