Method of fabricating ferroelectric field-effect transistor

    公开(公告)号:US10672894B2

    公开(公告)日:2020-06-02

    申请号:US16216833

    申请日:2018-12-11

    Applicant: IMEC vzw

    Abstract: The disclosed technology generally relates to methods of fabricating a semiconductor device, and more particularly to methods of fabricating a ferroelectric field-effect transistor (FeFET). According to one aspect, a method of fabricating a FeFET includes forming a layer stack on a gate structure, wherein forming the layer stack comprises a ferroelectric layer followed by forming a sacrificial stressor layer. The method additionally includes heat-treating the layer stack to cause a phase transition in the ferroelectric layer. The method additionally includes, subsequent to the heat treatment, replacing the sacrificial stressor layer with a two-dimensional (2D) material channel layer. The method further includes forming a source contact and a drain contact contacting the 2D material channel layer.

    METHOD OF FABRICATING FERROELECTRIC FIELD-EFFECT TRANSISTOR

    公开(公告)号:US20190198638A1

    公开(公告)日:2019-06-27

    申请号:US16216833

    申请日:2018-12-11

    Applicant: IMEC vzw

    Abstract: The disclosed technology generally relates to methods of fabricating a semiconductor device, and more particularly to methods of fabricating a ferroelectric field-effect transistor (FeFET). According to one aspect, a method of fabricating a FeFET includes forming a layer stack on a gate structure, wherein forming the layer stack comprises a ferroelectric layer followed by forming a sacrificial stressor layer. The method additionally includes heat-treating the layer stack to cause a phase transition in the ferroelectric layer. The method additionally includes, subsequent to the heat treatment, replacing the sacrificial stressor layer with a two-dimensional (2D) material channel layer. The method further includes forming a source contact and a drain contact contacting the 2D material channel layer.

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