Methods of forming carbon-containing silicon epitaxial layers
    9.
    发明授权
    Methods of forming carbon-containing silicon epitaxial layers 有权
    形成含碳硅外延层的方法

    公开(公告)号:US08029620B2

    公开(公告)日:2011-10-04

    申请号:US11831055

    申请日:2007-07-31

    IPC分类号: C30B25/12 C30B25/14

    CPC分类号: C30B25/02 C30B29/06

    摘要: In a first aspect, a method is provided for forming an epitaxial layer stack on a substrate. The method includes (1) selecting a target carbon concentration for the epitaxial layer stack; (2) forming a carbon-containing silicon layer on the substrate, the carbon-containing silicon layer having at least one of an initial carbon concentration, a thickness and a deposition time selected based on the selected target carbon concentration; and (3) forming a non-carbon-containing silicon layer on the carbon-containing silicon layer prior to etching. Numerous other aspects are provided.

    摘要翻译: 在第一方面,提供了一种在衬底上形成外延层堆叠的方法。 该方法包括(1)选择外延层堆叠的目标碳浓度; (2)在基板上形成含碳硅层,所述含碳硅层具有基于所选择的目标碳浓度选择的初始碳浓度,厚度和沉积时间中的至少一种; 和(3)在蚀刻之前在含碳硅层上形成非碳的硅层。 提供了许多其他方面。