SOI wafers with buried dielectric layers to prevent CU diffusion

    公开(公告)号:US10242947B2

    公开(公告)日:2019-03-26

    申请号:US15713756

    申请日:2017-09-25

    Abstract: An SOI semiconductor device includes a first wafer having an active semiconductor layer and a first oxide layer and a second wafer having a semiconductor substrate and a second oxide layer, the first oxide layer being bonded to the second oxide layer, and one of the first wafer and the second wafer includes a nitride layer. The nitride layer can be formed between the semiconductor substrate and the second oxide layer. A third oxide layer can be formed on the semiconductor substrate and the nitride layer is formed between the second oxide layer and the third oxide layer. The nitride layer can be formed between the active semiconductor layer and the first oxide layer. The first wafer can include a third oxide layer formed on the active semiconductor layer and the nitride layer is formed between the third oxide layer and the first oxide layer.

    Integrated circuit with replacement gate stacks and method of forming same
    6.
    发明授权
    Integrated circuit with replacement gate stacks and method of forming same 有权
    具有更换栅极堆叠的集成电路及其形成方法

    公开(公告)号:US09589806B1

    公开(公告)日:2017-03-07

    申请号:US14886424

    申请日:2015-10-19

    Abstract: An IC structure including: a first replacement gate stack for the pFET, the first replacement gate stack including: an interfacial layer in a first opening in the dielectric layer; a high-k layer over the interfacial layer in the first opening; a pFET work function metal layer over the high-k layer in the first opening; and a first gate electrode layer over the pFET work function metal layer and substantially filling the first opening; and a second replacement gate stack for the nFET, the second gate stack laterally adjacent to the first gate stack and including: the interfacial layer in a second opening in the dielectric layer; the high-k layer over the interfacial layer in the second opening; a nFET work function metal layer over the high-k layer in the second opening; and a second gate electrode layer over the nFET work function metal layer and substantially filling the second opening.

    Abstract translation: 一种IC结构,包括:用于pFET的第一替换栅极堆叠,所述第一替换栅极堆叠包括:在所述介电层中的第一开口中的界面层; 在第一开口的界面层上的高k层; 在第一开口中的高k层上的pFET功函数金属层; 以及在pFET功函数金属层上方的基本上填充第一开口的第一栅极电极层; 以及用于nFET的第二替代栅极堆叠,所述第二栅极堆叠横向邻近所述第一栅极堆叠并且包括:所述介电层中的第二开口中的界面层; 在第二开口的界面层上的高k层; 在第二开口的高k层上的nFET功函数金属层; 以及在nFET功函数金属层上方的第二栅电极层,并基本上填充第二开口。

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