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    Methods to fabricate MOSFET devices using selective deposition process
    2.
    发明申请
    Methods to fabricate MOSFET devices using selective deposition process 有权
    使用选择性沉积工艺制造MOSFET器件的方法

    公开(公告)号：US20050079692A1

    公开(公告)日：2005-04-14

    申请号：US10845984

    申请日：2004-05-14

    申请人： Arkadii Samoilov ,  Yihwan Kim ,  Errol Sanchez ,  Nicholas Dalida

    发明人： Arkadii Samoilov ,  Yihwan Kim ,  Errol Sanchez ,  Nicholas Dalida

    IPC分类号： H01L21/20 ,  H01L21/205 ,  H01L21/28 ,  H01L21/331 ,  H01L21/336 ,  H01L21/8238 ,  H01L21/36

    CPC分类号： H01L21/823814 ,  H01L21/0245 ,  H01L21/0251 ,  H01L21/02529 ,  H01L21/02532 ,  H01L21/02576 ,  H01L21/02579 ,  H01L21/0262 ,  H01L21/02636 ,  H01L21/28044 ,  H01L21/28114 ,  H01L21/823807 ,  H01L29/165 ,  H01L29/66242 ,  H01L29/665 ,  H01L29/66545 ,  H01L29/6656 ,  H01L29/66628 ,  H01L29/66636 ,  H01L29/78 ,  H01L29/7834 ,  H01L29/7848

    摘要： In one embodiment, a method for fabricating a silicon-based device on a substrate surface is provided which includes depositing a first silicon-containing layer by exposing the substrate surface to a first process gas comprising Cl2SiH2, a germanium source, a first etchant and a carrier gas and depositing a second silicon-containing layer by exposing the first silicon-containing layer to a second process gas comprising SiH4 and a second etchant. In another embodiment, a method for depositing a silicon-containing material on a substrate surface is provided which includes depositing a first silicon-containing layer on the substrate surface with a first germanium concentration of about 15 at % or more. The method further provides depositing on the first silicon-containing layer a second silicon-containing layer wherein a second germanium concentration of about 15 at % or less, exposing the substrate surface to air to form a native oxide layer, removing the native oxide layer to expose the second silicon-containing layer, and depositing a third silicon-containing layer on the second silicon-containing layer. In another embodiment, a method for depositing a silicon-containing material on a substrate surface is provided which includes depositing epitaxially a first silicon-containing layer on the substrate surface with a first lattice strain, and depositing epitaxially on the first silicon-containing layer a second silicon-containing layer with a second lattice strain greater than the first lattice strain.

    摘要翻译： 在一个实施例中，提供了一种在衬底表面上制造硅基器件的方法，其包括通过将衬底表面暴露于包括Cl 2 SiH 2，锗源，第一蚀刻剂和第二蚀刻剂的第一工艺气体来沉积第一含硅层 载气并通过将第一含硅层暴露于包含SiH 4和第二蚀刻剂的第二工艺气体而沉积第二含硅层。 在另一个实施例中，提供了一种用于在衬底表面上沉积含硅材料的方法，其包括以约15at％或更多的第一锗浓度在衬底表面上沉积第一含硅层。 该方法进一步提供了在第一含硅层上沉积第二含硅层，其中第二锗浓度为约15原子％或更低，将基底表面暴露于空气中以形成天然氧化物层，将天然氧化物层去除 暴露第二含硅层，并在第二含硅层上沉积第三含硅层。 在另一个实施例中，提供了一种用于在衬底表面上沉积含硅材料的方法，其包括以第一晶格应变在衬底表面上外延沉积第一含硅层，并且在第一含硅层上外延沉积 第二含硅层具有大于第一晶格应变的第二晶格应变。