Stress inducing spacers
    41.
    发明授权
    Stress inducing spacers 有权
    应力诱导垫片

    公开(公告)号:US06825529B2

    公开(公告)日:2004-11-30

    申请号:US10318602

    申请日:2002-12-12

    IPC分类号: H01L2976

    摘要: A substrate under tension and/or compression improves performance of devices fabricated therein. Tension and/or compression can be imposed on a substrate through selection of appropriate gate sidewall spacer material disposed above a device channel region wherein the spacers are formed adjacent both the gate and the substrate and impose forces on adjacent substrate areas. Another embodiment comprises compressive stresses imposed in the plane of the channel using SOI sidewall spacers made of polysilicon that is expanded by oxidation. The substrate areas under compression or tension exhibit charge mobility characteristics different from those of a non-stressed substrate. By controllably varying these stresses within NFET and PFET devices formed on a substrate, improvements in IC performance have been demonstrated.

    摘要翻译: 在张力和/或压缩下的基底改善了在其中制造的器件的性能。 可以通过选择设置在器件沟道区域上方的适当的栅极侧壁间隔物施加张力和/或压缩,其中间隔物邻近栅极和衬底形成,并且在邻近衬底区域上施加力。 另一个实施例包括使用通过氧化扩展的多晶硅制成的SOI侧壁间隔施加在沟道的平面中的压应力。 在压缩或张力下的衬底区域表现出不同于非应力衬底的电荷迁移率特性。 通过可控地改变在衬底上形成的NFET和PFET器件内的这些应力,已经证明了IC性能的提高。

    MOSFET performance improvement using deformation in SOI structure
    48.
    发明授权
    MOSFET performance improvement using deformation in SOI structure 失效
    使用SOI结构中的变形的MOSFET性能改进

    公开(公告)号:US07745277B2

    公开(公告)日:2010-06-29

    申请号:US11065061

    申请日:2005-02-25

    IPC分类号: H01L21/8238

    摘要: A method for manufacturing a semiconductor device is provided. The method includes forming a semiconductor layer on a substrate. The first region of the substrate is expanded to push up the first portion of the semiconductor layer, thereby applying tensile stress to the first portion. The second region of the substrate is compressed to pull down the second portion of the semiconductor layer, thereby applying compressive stress to the second portion. An N type device is formed over the first portion of the semiconductor layer, and a P type device is formed over the second portion of the semiconductor layer.

    摘要翻译: 提供一种制造半导体器件的方法。 该方法包括在衬底上形成半导体层。 衬底的第一区域被膨胀以向上推动半导体层的第一部分,从而对第一部分施加拉伸应力。 衬底的第二区域被压缩以拉下半导体层的第二部分,从而向第二部分施加压应力。 在半导体层的第一部分上形成N型器件,并且在半导体层的第二部分上形成P型器件。

    Method for reduced N+ diffusion in strained Si on SiGe substrate
    49.
    发明授权
    Method for reduced N+ diffusion in strained Si on SiGe substrate 有权
    SiGe衬底上应变Si中N +扩散减少的方法

    公开(公告)号:US07345329B2

    公开(公告)日:2008-03-18

    申请号:US11057129

    申请日:2005-02-15

    IPC分类号: H01L31/112

    摘要: The first source and drain regions are formed in an upper surface of a SiGe substrate. The first source and drain regions containing an N type impurity. Vacancy concentration in the first source and drain regions are reduced in order to reduce diffusion of the N type impurity contained in the first source and drain regions. The vacancy concentration is reduced by an interstitial element or a vacancy-trapping element in the first source and drain regions. The interstitial element or the vacancy-trapping element is provided by ion-implantation.

    摘要翻译: 第一源区和漏区形成在SiGe衬底的上表面中。 含有N型杂质的第一源区和漏区。 为了减少包含在第一源极和漏极区域中的N型杂质的扩散,第一源区和漏区中的空位浓度被降低。 空位浓度通过第一源极和漏极区域中的间隙元素或空穴捕获元件而减小。 间隙元素或空位捕获元件通过离子注入提供。