Method and structure for forming strained Si for CMOS devices
    2.
    发明授权
    Method and structure for forming strained Si for CMOS devices 失效
    用于形成CMOS器件的应变Si的方法和结构

    公开(公告)号:US07129126B2

    公开(公告)日:2006-10-31

    申请号:US10605906

    申请日:2003-11-05

    IPC分类号: H01L21/8238

    摘要: A method for manufacturing a device including an n-type device and a p-type device. In an aspect of the invention, the method involves doping a portion of a semiconductor substrate and forming a gap in the semiconductor substrate by removing at least a portion of the doped portion of the semiconductor substrate. The method further involves growing a strain layer in at least a portion of the gap in the semiconductor substrate. For the n-type device, the strain layer is grown on at least a portion which is substantially directly under a channel of the n-type device. For the p-type device, the strain layer is grown on at least a portion which is substantially directly under a source region or drain region of the p-type device and not substantially under a channel of the p-type device.

    摘要翻译: 一种制造包括n型器件和p型器件的器件的方法。 在本发明的一个方面,该方法包括通过去除半导体衬底的掺杂部分的至少一部分来掺杂半导体衬底的一部分并在半导体衬底中形成间隙。 该方法还包括在半导体衬底中的间隙的至少一部分中生长应变层。 对于n型器件,应变层在基本上直接位于n型器件的沟道下方的至少一部分上生长。 对于p型器件,应变层生长在基本上直接位于p型器件的源极区域或漏极区域的部分上,并且基本上不在p型器件的沟道下生长。

    Trench sidewall passivation for lateral RIE in a selective silicon-on-insulator process flow
    9.
    发明授权
    Trench sidewall passivation for lateral RIE in a selective silicon-on-insulator process flow 失效
    在选择性绝缘体上硅工艺流程中横向RIE的沟槽侧壁钝化

    公开(公告)号:US07081397B2

    公开(公告)日:2006-07-25

    申请号:US10929990

    申请日:2004-08-30

    IPC分类号: H01L21/76

    CPC分类号: H01L21/76232

    摘要: A lateral trench in a semiconductor substrate is formed by the following steps. Form a lateral implant mask (LIM) over a top surface of the semiconductor substrate. Implant a heavy dopant concentration into the substrate through the LIM to form a lateral implant region (LIR) in the substrate. Strip the LIM exposing the top surface of the substrate. Form an epitaxial silicon layer over the top surface of the substrate burying the LIR. Form a trench mask over the epitaxial layer. Etch a trench reaching through the epitaxial layer and the LIR. Form oxidized trench sidewalls, an oxidized trench bottom and oxidized sidewalls of the LIR. Etch the oxidized sidewalls of the LIR until the LIR is exposed. Form laterally extending trenches by etching away the LIR.

    摘要翻译: 通过以下步骤形成半导体衬底中的横向沟槽。 在半导体衬底的顶表面上形成横向植入掩模(LIM)。 通过LIM将重掺杂浓度植入到衬底中,以在衬底中形成横向植入区域(LIR)。 剥离LIM暴露衬底的顶部表面。 在掩埋LIR的衬底的顶表面上形成外延硅层。 在外延层上形成沟槽掩模。 蚀刻穿过外延层和LIR的沟槽。 形成氧化的沟槽侧壁,氧化沟槽底部和LIR的氧化侧壁。 蚀刻LIR的氧化侧壁,直到LIR暴露。 通过蚀刻掉LIR形成横向延伸的沟槽。