Selective nitride liner formation for shallow trench isolation
    22.
    发明申请
    Selective nitride liner formation for shallow trench isolation 有权
    用于浅沟槽隔离的选择性氮化物衬垫形成

    公开(公告)号:US20060099771A1

    公开(公告)日:2006-05-11

    申请号:US10970090

    申请日:2004-10-21

    IPC分类号: H01L21/76

    CPC分类号: H01L21/76232

    摘要: A method for forming a divot free nitride lined shallow trench isolation (STI) feature including providing a substrate including an STI trench extending through an uppermost hardmask layer into a thickness of the substrate exposing the substrate portions; selectively forming a first insulating layer lining the STI trench over said exposed substrate portions only; backfilling the STI trench with a second insulating layer; planarizing the second insulating layer; and, carrying out a wet etching process to remove the uppermost hardmask layer.

    摘要翻译: 一种用于形成无自由度的氮化物衬底浅沟槽隔离(STI)特征的方法,包括提供包括延伸穿过最上面的硬掩模层的STI沟槽的衬底,暴露衬底部分的衬底的厚度; 仅在所述暴露的衬底部分上选择性地形成衬在STI沟槽上的第一绝缘层; 用第二绝缘层回填STI槽; 平面化第二绝缘层; 并进行湿蚀刻处理以去除最上面的硬掩模层。

    MOSFET Device With Localized Stressor
    23.
    发明申请
    MOSFET Device With Localized Stressor 有权
    具有局部应力的MOSFET器件

    公开(公告)号:US20100015814A1

    公开(公告)日:2010-01-21

    申请号:US12176655

    申请日:2008-07-21

    IPC分类号: H01L21/31

    摘要: MOSFETs having localized stressors are provided. The MOSFET has a stress-inducing layer formed in the source/drain regions, wherein the stress-inducing layer comprises a first semiconductor material and a second semiconductor material. A treatment is performed on the stress-inducing layer such that a reaction is caused with the first semiconductor material and the second semiconductor material is forced lower into the stress-inducing layer. The stress-inducing layer may be either a recessed region or non-recessed region. A first method involves forming a stress-inducing layer, such as SiGe, in the source/drain regions and performing a nitridation or oxidation process. A nitride or oxide film is formed in the top portion of the stress-inducing layer, forcing the Ge lower into the stress-inducing layer. Another method embodiment involves forming a reaction layer over the stress-inducing layer and performing a treatment process to cause the reaction layer to react with the stress-inducing layer.

    摘要翻译: 提供具有局部应力的MOSFET。 MOSFET具有形成在源极/漏极区域中的应力诱导层,其中应力诱导层包括第一半导体材料和第二半导体材料。 对应力诱导层进行处理,使得由第一半导体材料引起反应,并且第二半导体材料被迫下降到应力诱导层中。 应力诱导层可以是凹陷区域或非凹陷区域。 第一种方法包括在源极/漏极区域中形成诸如SiGe的应力诱导层并进行氮化或氧化过程。 在应力诱导层的顶部形成氮化物或氧化物膜,迫使Ge较低进入应力诱导层。 另一方法实施例涉及在应力诱导层上形成反应层,并进行处理工艺以使反应层与应力诱导层反应。

    Super anneal for process induced strain modulation
    24.
    发明授权
    Super anneal for process induced strain modulation 有权
    过程诱导应变调制的超退火

    公开(公告)号:US07528028B2

    公开(公告)日:2009-05-05

    申请号:US11199011

    申请日:2005-08-08

    IPC分类号: H01L21/8238

    摘要: A method for forming a semiconductor structure includes providing a substrate, forming a first device region on the substrate, forming a stressor layer overlying the first device region, and super annealing the stressor layer in the first device region, preferably by exposing the substrate to a high-energy radiance source, so that the stressor layer is super annealed for a substantially short duration. Preferably, the method further includes masking a second device region on the substrate while the first device region is super annealed. Alternatively, after the stressor layer in the first region is annealed, the stressor layer in the second device region is super annealed. A semiconductor structure formed using the method has different strains in the first and second device regions.

    摘要翻译: 一种用于形成半导体结构的方法包括:提供衬底,在衬底上形成第一器件区域,形成覆盖第一器件区域的应力层,以及对第一器件区域中的应力层进行超退火,优选通过将衬底暴露于 高能量辐射源,使得应力层在超短时间内进行超退火。 优选地,该方法还包括在第一器件区域被超退火时掩蔽衬底上的第二器件区域。 或者,在第一区域中的应力层退火之后,第二器件区域中的应力层被超退火。 使用该方法形成的半导体结构在第一和第二器件区域中具有不同的应变。

    Method of making MOSFET device with localized stressor
    25.
    发明授权
    Method of making MOSFET device with localized stressor 有权
    制造具有局部应力源的MOSFET器件的方法

    公开(公告)号:US07335544B2

    公开(公告)日:2008-02-26

    申请号:US11012413

    申请日:2004-12-15

    IPC分类号: H01L29/739

    摘要: A metal-oxide-semiconductor field-effect transistors (MOSFET) having localized stressors is provided. In accordance with embodiments of the present invention, a transistor comprises a high-stress film over the source/drain regions, but not over the gate electrode. The high-stress film may be a tensile-stress film for use with n-channel devices or a compressive-stress film for use with p-channel devices. A method of fabricating a MOSFET with localized stressors over the source/drain regions comprises forming a transistor having a gate electrode and source/drain regions, forming a high-stress film over the gate electrode and the source/drain regions, and thereafter removing the high-stress film located over the gate electrode, thereby leaving the high-stress film located over the source/drain regions. A contact-etch stop layer may be formed over the transistor.

    摘要翻译: 提供了具有局部应力源的金属氧化物半导体场效应晶体管(MOSFET)。 根据本发明的实施例,晶体管包括源/漏区上的高应力膜,但不在栅电极上。 高应力膜可以是用于n沟道器件的拉伸应力膜或用于p沟道器件的压应力膜。 在源极/漏极区域上制造具有局部应力源的MOSFET的方法包括形成具有栅电极和源极/漏极区的晶体管,在栅电极和源极/漏极区上形成高应力膜,然后除去 高应力膜位于栅电极之上,从而使高应力膜位于源极/漏极区之上。 接触蚀刻停止层可以形成在晶体管上。

    SOI-like structures in a bulk semiconductor substrate
    26.
    发明申请
    SOI-like structures in a bulk semiconductor substrate 审中-公开
    体半导体衬底中的SOI类结构

    公开(公告)号:US20070063282A1

    公开(公告)日:2007-03-22

    申请号:US11599931

    申请日:2006-11-15

    IPC分类号: H01L27/12 H01L29/00

    摘要: Bulk silicon is transformed into an SOI-like structure by annealing. Trenches are formed in a bulk substrate to define device sites. The lower portions of the trenches are annealed at low pressure in a hydrogen atmosphere. This transforms the lower trench portions to expanded, spheroidal voids that extend under the device sites. Neighboring voids each reside about half way under an intervening site. A silicon-consuming process forms a liner on the walls of the voids, with the liners on neighboring voids abutting to isolate the intervening device site from the substrate and other device sites.

    摘要翻译: 通过退火将体硅转变成SOI样结构。 沟槽形成在大量衬底中以限定器件位置。 沟槽的下部在氢气气氛中在低压下退火。 这将下沟槽部分转变成在器件位置下延伸的膨胀的球状空隙。 相邻的空洞每个居住在中间位置的一半左右。 消耗硅的过程在空隙的壁上形成衬垫,相邻空隙上的衬垫邻接以将介入的器件位置与衬底和其它器件位置隔离。

    Impurity co-implantation to improve transistor performance
    27.
    发明申请
    Impurity co-implantation to improve transistor performance 审中-公开
    杂质共注入提高晶体管性能

    公开(公告)号:US20060284249A1

    公开(公告)日:2006-12-21

    申请号:US11157515

    申请日:2005-06-21

    IPC分类号: H01L21/8238

    摘要: A pMOS transistor having reduced diffusion from source/drain regions and a method of forming the same are provided. The pMOS transistor includes a source/drain region doped with a p-type impurity and a diffusion-retarding material in a semiconductor substrate. The pMOS transistor further includes a gate dielectric over a channel region in the semiconductor substrate, a gate electrode over the gate dielectric, and a lightly doped source/drain (LDD) region substantially aligned with an edge of the gate electrode. The diffusion-retarding material preferably includes carbon, fluorine, nitrogen, and combinations thereof.

    摘要翻译: 提供了具有从源极/漏极区域的扩散减小的pMOS晶体管及其形成方法。 pMOS晶体管包括掺杂有p型杂质的源极/漏极区域和在半导体衬底中的扩散阻滞材料。 pMOS晶体管还包括在半导体衬底中的沟道区域上的栅极电介质,栅极电介质上的栅极电极以及基本上与栅电极的边缘对齐的轻掺杂源极/漏极(LDD)区域。 扩散阻滞材料优选包括碳,氟,氮及其组合。

    MOSFET Device With Localized Stressor
    30.
    发明申请
    MOSFET Device With Localized Stressor 审中-公开
    具有局部应力的MOSFET器件

    公开(公告)号:US20080128765A1

    公开(公告)日:2008-06-05

    申请号:US12016499

    申请日:2008-01-18

    IPC分类号: H01L29/78

    摘要: A metal-oxide-semiconductor field-effect transistors (MOSFET) having localized stressors is provided. In accordance with embodiments of the present invention, a transistor comprises a high-stress film over the source/drain regions, but not over the gate electrode. The high-stress film may be a tensile-stress film for use with n-channel devices or a compressive-stress film for use with p-channel devices. A method of fabricating a MOSFET with localized stressors over the source/drain regions comprises forming a transistor having a gate electrode and source/drain regions, forming a high-stress film over the gate electrode and the source/drain regions, and thereafter removing the high-stress film located over the gate electrode, thereby leaving the high-stress film located over the source/drain regions. A contact-etch stop layer may be formed over the transistor.

    摘要翻译: 提供了具有局部应力源的金属氧化物半导体场效应晶体管(MOSFET)。 根据本发明的实施例,晶体管包括源/漏区上的高应力膜,但不在栅电极上。 高应力膜可以是用于n沟道器件的拉伸应力膜或用于p沟道器件的压应力膜。 在源极/漏极区域上制造具有局部应力源的MOSFET的方法包括形成具有栅电极和源/漏区的晶体管,在栅电极和源/漏区上形成高应力膜,然后除去 高应力膜位于栅电极之上,从而使高应力膜位于源极/漏极区之上。 接触蚀刻停止层可以形成在晶体管上。