HIGH MOBILITY STRAINED CHANNELS FOR FIN-BASED TRANSISTORS
    4.
    发明申请
    HIGH MOBILITY STRAINED CHANNELS FOR FIN-BASED TRANSISTORS 有权
    用于基于晶体的晶体管的高移动性应变通道

    公开(公告)号:US20140027816A1

    公开(公告)日:2014-01-30

    申请号:US13560474

    申请日:2012-07-27

    IPC分类号: H01L29/78 H01L29/165

    摘要: Techniques are disclosed for incorporating high mobility strained channels into fin-based transistors (e.g., FinFETs such as double-gate, trigate, etc), wherein a stress material is cladded onto the channel area of the fin. In one example embodiment, silicon germanium (SiGe) is cladded onto silicon fins to provide a desired stress, although other fin and cladding materials can be used. The techniques are compatible with typical process flows, and the cladding deposition can occur at a plurality of locations within the process flow. In some cases, the built-in stress from the cladding layer may be enhanced with a source/drain stressor that compresses both the fin and cladding layers in the channel. In some cases, an optional capping layer can be provided to improve the gate dielectric/semiconductor interface. In one such embodiment, silicon is provided over a SiGe cladding layer to improve the gate dielectric/semiconductor interface.

    摘要翻译: 公开了用于将高迁移率应变通道结合到鳍状晶体管(例如,诸如双栅极,三相等等的FinFET)中的技术,其中应力材料被包覆到鳍的沟道区域上。 在一个示例性实施例中,硅锗(SiGe)被包覆到硅散热片上以提供期望的应力,尽管可以使用其它鳍和包层材料。 这些技术与典型的工艺流程兼容,并且包层沉积可以发生在工艺流程内的多个位置处。 在一些情况下,来自包覆层的内置应力可以通过压缩通道中的鳍和覆层的源极/漏极应力来增强。 在一些情况下,可以提供可选的封盖层以改善栅极电介质/半导体界面。 在一个这样的实施例中,硅被提供在SiGe包覆层上以改善栅极电介质/半导体界面。

    High mobility strained channels for fin-based transistors
    7.
    发明授权
    High mobility strained channels for fin-based transistors 有权
    用于鳍式晶体管的高迁移率应变通道

    公开(公告)号:US08847281B2

    公开(公告)日:2014-09-30

    申请号:US13560474

    申请日:2012-07-27

    IPC分类号: H01L29/165

    摘要: Techniques are disclosed for incorporating high mobility strained channels into fin-based transistors (e.g., FinFETs such as double-gate, trigate, etc), wherein a stress material is cladded onto the channel area of the fin. In one example embodiment, silicon germanium (SiGe) is cladded onto silicon fins to provide a desired stress, although other fin and cladding materials can be used. The techniques are compatible with typical process flows, and the cladding deposition can occur at a plurality of locations within the process flow. In some cases, the built-in stress from the cladding layer may be enhanced with a source/drain stressor that compresses both the fin and cladding layers in the channel. In some cases, an optional capping layer can be provided to improve the gate dielectric/semiconductor interface. In one such embodiment, silicon is provided over a SiGe cladding layer to improve the gate dielectric/semiconductor interface.

    摘要翻译: 公开了用于将高迁移率应变通道结合到鳍状晶体管(例如,诸如双栅极,三相等等的FinFET)中的技术,其中应力材料被包覆到鳍的沟道区域上。 在一个示例性实施例中,硅锗(SiGe)被包覆到硅散热片上以提供期望的应力,尽管可以使用其它鳍和包层材料。 这些技术与典型的工艺流程兼容,并且包层沉积可以发生在工艺流程内的多个位置处。 在一些情况下,来自包覆层的内置应力可以通过压缩通道中的鳍和覆层的源极/漏极应力来增强。 在一些情况下,可以提供可选的封盖层以改善栅极电介质/半导体界面。 在一个这样的实施例中,硅被提供在SiGe包覆层上以改善栅极电介质/半导体界面。

    Two-dimensional condensation for uniaxially strained semiconductor fins
    8.
    发明授权
    Two-dimensional condensation for uniaxially strained semiconductor fins 有权
    用于单轴应变半导体翅片的二维冷凝

    公开(公告)号:US08211772B2

    公开(公告)日:2012-07-03

    申请号:US12646427

    申请日:2009-12-23

    IPC分类号: H01L21/336

    摘要: Techniques are disclosed for enabling multi-sided condensation of semiconductor fins. The techniques can be employed, for instance, in fabricating fin-based transistors. In one example case, a strain layer is provided on a bulk substrate. The strain layer is associated with a critical thickness that is dependent on a component of the strain layer, and the strain layer has a thickness lower than or equal to the critical thickness. A fin is formed in the substrate and strain layer, such that the fin includes a substrate portion and a strain layer portion. The fin is oxidized to condense the strain layer portion of the fin, so that a concentration of the component in the strain layer changes from a pre-condensation concentration to a higher post-condensation concentration, thereby causing the critical thickness to be exceeded.

    摘要翻译: 公开了用于实现半导体翅片的多面冷凝的技术。 这些技术可以用于例如制造基于鳍的晶体管。 在一个示例的情况下,在体基板上设置应变层。 应变层与取决于应变层的部件的临界厚度相关联,并且应变层具有低于或等于临界厚度的厚度。 在基板和应变层中形成翅片,使得翅片包括基板部分和应变层部分。 将翅片氧化以冷凝翅片的应变层部分,使得应变层中的组分的浓度从预凝结浓度变为较高的缩合后浓度,从而超过临界厚度。