Structure and method of applying stresses to PFET and NFET transistor channels for improved performance
    1.
    发明授权
    Structure and method of applying stresses to PFET and NFET transistor channels for improved performance 有权
    对PFET和NFET晶体管通道施加应力的结构和方法,以提高性能

    公开(公告)号:US07193254B2

    公开(公告)日:2007-03-20

    申请号:US10904808

    申请日:2004-11-30

    IPC分类号: H01L29/80

    摘要: A semiconductor device structure is provided which includes a first semiconductor device; a second semiconductor device; and a unitary stressed film disposed over both the first and second semiconductor devices. The stressed film has a first portion overlying the first semiconductor device, the first portion imparting a first magnitude compressive stress to a conduction channel of the first semiconductor device, the stressed film further having a second portion overlying the second semiconductor device, the second portion not imparting the first magnitude compressive stress to a conduction channel of the second semiconductor device, the second portion including an ion concentration not present in the second portion such that the second portion imparts one of a compressive stress having a magnitude much lower than the first magnitude, zero stress, and a tensile stress to the conduction channel of the second semiconductor device.

    摘要翻译: 提供一种半导体器件结构,其包括第一半导体器件; 第二半导体器件; 以及设置在第一和第二半导体器件两者上的单一应力膜。 应力膜具有覆盖第一半导体器件的第一部分,第一部分向第一半导体器件的导电通道施加第一大小的压缩应力,应力膜还具有覆盖第二半导体器件的第二部分,第二部分不 将第一强度压缩应力施加到第二半导体器件的导电通道,第二部分包括不存在于第二部分中的离子浓度,使得第二部分施加具有远低于第一大小的量级的压缩应力之一, 零应力和对第二半导体器件的导电通道的拉伸应力。

    Method of applying stresses to PFET and NFET transistor channels for improved performance
    2.
    发明授权
    Method of applying stresses to PFET and NFET transistor channels for improved performance 有权
    向PFET和NFET晶体管通道施加应力以提高性能的方法

    公开(公告)号:US07442611B2

    公开(公告)日:2008-10-28

    申请号:US11657154

    申请日:2007-01-24

    IPC分类号: H01L21/8234

    摘要: A method is provided for fabricating a semiconductor device structure. In such method a p-type field effect transistor (PFET) and an n-type field effect transistor (NFET), each of the NFET and the PFET having a conduction channel disposed in a single-crystal semiconductor region of a substrate. A stressed film having a compressive stress at a first magnitude can be formed to overlie the PFET and the NFET. Desirably, a mask is formed to cover the PFET while exposing the NFET, after which, desirably, a portion of the stressed film overlying the NFET is subjected to ion implantation, while the mask protects another portion of the stressed film overlying the PFET from the ion implantation. The substrate can then be annealed, whereby, desirably, the compressive stress of the implanted portion of the stressed film is much reduced from the first magnitude by the annealing. In such way, the implanted portion of the stressed film overlying the NFET desirably imparts one of a much reduced magnitude compressive stress, a zero stress and a tensile stress to the conduction channel of the NFET. Another portion of the stressed film can continue to impart the compressive stress at the first magnitude to the conduction channel of the PFET.

    摘要翻译: 提供了制造半导体器件结构的方法。 在这种方法中,p型场效应晶体管(PFET)和n型场效应晶体管(NFET),NFET和PFET中的每一个具有设置在基板的单晶半导体区域中的导电沟道。 可以形成具有第一大小的压应力的应力膜覆盖在PFET和NFET上。 期望地,形成掩模以在暴露NFET的同时覆盖PFET,之后理想地,覆盖NFET的应力膜的一部分经受离子注入,而掩模保护覆盖PFET的应力膜的另一部分与 离子注入。 然后可以对衬底进行退火,因此期望地,应力膜的注入部分的压缩应力通过退火从第一量级大大降低。 以这种方式,覆盖NFET的应力膜的注入部分期望地将大大减小的压缩应力,零应力和拉伸应力中的一个施加到NFET的传导通道。 应力膜的另一部分可以继续将第一大小的压应力赋予PFET的传导通道。