Method and process for forming a self-aligned silicide contact
    11.
    发明申请
    Method and process for forming a self-aligned silicide contact 有权
    用于形成自对准硅化物接触的方法和工艺

    公开(公告)号:US20060051961A1

    公开(公告)日:2006-03-09

    申请号:US10935497

    申请日:2004-09-07

    IPC分类号: H01L21/44

    摘要: The present invention provides a method for forming a self-aligned Ni alloy silicide contact. The method of the present invention begins by first depositing a conductive Ni alloy with Pt and optionally at least one of the following metals Pd, Rh, Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W or Re over an entire semiconductor structure which includes at least one gate stack region. An oxygen diffusion barrier comprising, for example, Ti, TiN or W is deposited over the structure to prevent oxidation of the metals. An annealing step is then employed to cause formation of a NiSi, PtSi contact in regions in which the metals are in contact with silicon. The metal that is in direct contact with insulating material such as SiO2 and Si3N4 is not converted into a metal alloy silicide contact during the annealing step. A selective etching step is then performed to remove unreacted metal from the sidewalls of the spacers and trench isolation regions.

    摘要翻译: 本发明提供一种形成自对准Ni合金硅化物接触的方法。 本发明的方法首先首先用Pt和任选的以下金属Pd,Rh,Ti,V,Cr,Zr,Nb,Mo,Hf,Ta,W或Re中的至少一种沉积导电Ni合金, 整个半导体结构,其包括至少一个栅极堆叠区域。 包含例如Ti,TiN或W的氧扩散阻挡层沉积在结构上以防止金属的氧化。 然后使用退火步骤在金属与硅接触的区域中形成NiSi,PtSi接触。 与诸如SiO 2和Si 3 N 4 N之类的绝缘材料直接接触的金属在金属合金硅化物接触期间不会转化为金属合金硅化物接触 退火步骤。 然后执行选择性蚀刻步骤以从间隔物和沟槽隔离区域的侧壁去除未反应的金属。

    Mobility Enhanced FET Devices
    13.
    发明申请
    Mobility Enhanced FET Devices 审中-公开
    移动增强型FET器件

    公开(公告)号:US20080217700A1

    公开(公告)日:2008-09-11

    申请号:US11684619

    申请日:2007-03-11

    IPC分类号: H01L29/76 H01L21/336

    摘要: NFET and PFET devices with separately stressed channel regions, and methods of their fabrication is disclosed. A FET is disclosed which includes a gate, which gate includes a metal in a first state of stress. The FET also includes a channel region hosted in a single crystal Si based material, which channel region is overlaid by the gate and is in a second state of stress. The second state of stress of the channel region is of an opposite sign than the first state of stress of the metal included in the gate. The NFET channel is usually in a tensile state of stress, while the PFET channel is usually in a compressive state of stress. The methods of fabrication include the deposition of metal layers by physical vapor deposition (PVD), in such manner that the layers are in stressed states.

    摘要翻译: 具有单独应力通道区域的NFET和PFET器件及其制造方法。 公开了一种FET,其包括栅极,该栅极包括处于第一应力状态的金属。 FET还包括托管在单晶Si基材料中的沟道区域,该沟道区域被栅极覆盖并处于第二应力状态。 沟道区域的第二应力状态与包括在栅极中的金属的第一应力状态相反。 NFET通道通常处于应力的拉伸状态,而PFET通道通常处于应力的压缩状态。 制造方法包括通过物理气相沉积(PVD)沉积金属层,使得层处于应力状态。

    STRUCTURE AND METHOD TO GENERATE LOCAL MECHANICAL GATE STRESS FOR MOSFET CHANNEL MOBILITY MODIFICATION
    16.
    发明申请
    STRUCTURE AND METHOD TO GENERATE LOCAL MECHANICAL GATE STRESS FOR MOSFET CHANNEL MOBILITY MODIFICATION 有权
    用于产生用于MOSFET通道移动性修改的局部机械栅极应力的结构和方法

    公开(公告)号:US20070111421A1

    公开(公告)日:2007-05-17

    申请号:US11618751

    申请日:2006-12-30

    IPC分类号: H01L21/8238

    摘要: A semiconductor structure and method that is capable of generating a local mechanical gate stress for channel mobility modification are provided. The semiconductor structure includes at least one NFET and at least one PFET on a surface of a semiconductor substrate. The at least one NFET has a gate stack structure comprising a gate dielectric, a first gate electrode layer, a barrier layer, a Si-containing second gate electrode layer and a compressive metal, and the at least one PFET has a gate stack structure comprising a gate dielectric, a first gate electrode layer, a barrier layer and a tensile metal or a silicide.

    摘要翻译: 提供了能够产生用于信道迁移率修改的局部机械栅极应力的半导体结构和方法。 半导体结构在半导体衬底的表面上包括至少一个NFET和至少一个PFET。 所述至少一个NFET具有包括栅极电介质,第一栅极电极层,阻挡层,含Si的第二栅极电极层和压缩金属的栅极堆叠结构,并且所述至少一个PFET具有包括 栅极电介质,第一栅电极层,阻挡层和拉伸金属或硅化物。