METHOD OF FABRICATING SEMICONDUCTOR STRUCTURES ON DISSIMILAR SUBSTRATES
    18.
    发明申请
    METHOD OF FABRICATING SEMICONDUCTOR STRUCTURES ON DISSIMILAR SUBSTRATES 有权
    在二极管基板上制作半导体结构的方法

    公开(公告)号:US20160276438A1

    公开(公告)日:2016-09-22

    申请号:US15036406

    申请日:2013-12-23

    Abstract: Techniques are disclosed for forming a defect-free semiconductor structure on a dissimilar substrate with a multi-aspect ratio mask. The multi-aspect ratio mask comprises a first, second, and third layer formed on a substrate. The second layer has a second opening wider than a first opening and a third opening in the first and third layers, respectively. All three openings are centered along a common central axis. A semiconductor material is grown from the top surface of the substrate and laterally onto the top surface of the first layer within the second opening. The semiconductor material disposed within and vertically below the third opening is etched by using the third layer as an etch mask so that the remaining material that laterally overflowed onto the top surface of the first layer forms a remaining structure.

    Abstract translation: 公开了用于在具有多纵横比掩模的不同基板上形成无缺陷半导体结构的技术。 多纵横比掩模包括形成在基板上的第一,第二和第三层。 第二层分别具有比第一和第三层中的第一开口和第三开口更宽的第二开口。 所有三个开口沿着共同的中心轴线居中。 半导体材料从衬底的顶表面生长并横向放置在第二开口内的第一层的顶表面上。 通过使用第三层作为蚀刻掩模来蚀刻设置在第三开口内并垂直于第三开口下方的半导体材料,使得横向溢出到第一层的顶表面上的剩余材料形成剩余结构。

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