SEMICONDUCTOR DEVICE AND SEMICONDUCTOR DEVICE MANUFACTURING METHOD

    公开(公告)号:US20200294861A1

    公开(公告)日:2020-09-17

    申请号:US16559390

    申请日:2019-09-03

    Abstract: According to one embodiment, a semiconductor device includes: a semiconductor substrate; a gate insulating film provided on the semiconductor substrate; a gate electrode film, provided on the gate insulating film, that includes boron; a side wall insulating film extending along a side surface of the gate electrode film; a barrier film including a first portion provided between the side surface of the gate electrode film and the side wall insulating film, and a second portion, connected to the first portion, that is provided between the gate insulating film and a bottom surface of the side wall insulating film. The barrier film includes carbon as a main component to limit diffusion of the boron in the gate electrode film.

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