Semiconductor device and method of manufacturing the same
    5.
    发明公开
    Semiconductor device and method of manufacturing the same 审中-公开
    半导体装置及它们的制备方法

    公开(公告)号:EP1427003A3

    公开(公告)日:2005-03-02

    申请号:EP03027739.6

    申请日:2003-12-02

    申请人: OHMI, Tadahiro

    IPC分类号: H01L21/306 H01L21/336

    摘要: In a semiconductor device formed on a silicon surface which has a substantial (110) crystal plane orientation, the silicon surface is flattened so that an arithmetical mean deviation of surface Ra is not greater than 0.15nm, preferably, 0.09nm, which enables to manufacture an n-MOS transistor of a high mobility. Such a flattened silicon surface is obtained by repeating a deposition process of a self-sacrifice oxide film in an oxygen radical atmosphere and a removing process of the self-sacrifice oxide film, by cleaning the silicon surface in deaerated H 2 O or a low OH density atmosphere, or by strongly terminating the silicon surface by hydrogen or heavy hydrogen. The deposition process of the self-sacrifice oxide film may be carried out by isotropic oxidation.

    Semiconductor device and method of manufacturing the same
    6.
    发明公开
    Semiconductor device and method of manufacturing the same 审中-公开
    半导体器件及其制造方法

    公开(公告)号:EP1427003A2

    公开(公告)日:2004-06-09

    申请号:EP03027739.6

    申请日:2003-12-02

    申请人: OHMI, Tadahiro

    IPC分类号: H01L21/306 H01L21/336

    摘要: In a semiconductor device formed on a silicon surface which has a substantial (110) crystal plane orientation, the silicon surface is flattened so that an arithmetical mean deviation of surface Ra is not greater than 0.15nm, preferably, 0.09nm, which enables to manufacture an n-MOS transistor of a high mobility. Such a flattened silicon surface is obtained by repeating a deposition process of a self-sacrifice oxide film in an oxygen radical atmosphere and a removing process of the self-sacrifice oxide film, by cleaning the silicon surface in deaerated H 2 O or a low OH density atmosphere, or by strongly terminating the silicon surface by hydrogen or heavy hydrogen. The deposition process of the self-sacrifice oxide film may be carried out by isotropic oxidation.

    摘要翻译: 在形成于具有实质上(110)晶面取向的硅表面上的半导体器件中,硅表面被平坦化,使得表面Ra的算术平均偏差不大于0.15nm,优选为0.09nm,这能够制造 高迁移率的n-MOS晶体管。 通过重复在氧自由基气氛中的自牺牲氧化物膜的沉积过程和自牺牲氧化物膜的去除过程,通过在脱气的H 2 O或低OH密度气氛中清洁硅表面来获得这种平坦的硅表面 或者通过氢或重氢强烈地终止硅表面。 自牺牲氧化物膜的沉积过程可以通过各向同性氧化进行。