Methods and Mask Structures for Substantially Defect-Free Epitaxial Growth
    1.
    发明申请
    Methods and Mask Structures for Substantially Defect-Free Epitaxial Growth 有权
    用于基本无缺陷外延生长的方法和掩模结构

    公开(公告)号:US20130233238A1

    公开(公告)日:2013-09-12

    申请号:US13768462

    申请日:2013-02-15

    Applicant: IMEC

    Abstract: Disclosed are methods and mask structures for epitaxially growing substantially defect-free semiconductor material. In some embodiments, the method may comprise providing a substrate comprising a first crystalline material, where the first crystalline material has a first lattice constant; providing a mask structure on the substrate, where the mask structure comprises a first level comprising a first opening extending through the first level (where a bottom of the first opening comprises the substrate), and a second level on top of the first level, where the second level comprises a plurality of second trenches positioned at a non-zero angle with respect to the first opening. The method may further comprise epitaxially growing a second crystalline material on the bottom of the first opening, where the second crystalline material has a second lattice constant different than the first lattice constant and defects in the second crystalline material are trapped in the first opening.

    Abstract translation: 公开了用于外延生长基本上无缺陷的半导体材料的方法和掩模结构。 在一些实施例中,该方法可以包括提供包括第一晶体材料的基底,其中第一晶体材料具有第一晶格常数; 在所述衬底上提供掩模结构,其中所述掩模结构包括第一层,所述第一层包括延伸穿过所述第一层的第一开口(其中所述第一开口的底部包括所述衬底),以及在所述第一层的顶部上的第二层, 第二级包括相对于第一开口非零角度定位的多个第二沟槽。 该方法还可以包括在第一开口的底部上外延生长第二晶体材料,其中第二晶体材料具有不同于第一晶格常数的第二晶格常数,并且第二晶体材料中的缺陷被捕获在第一开口中。

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