METHODS AND APPARATUS FOR IDENTIFYING AND REDUCING SEMICONDUCTOR FAILURES
    33.
    发明申请
    METHODS AND APPARATUS FOR IDENTIFYING AND REDUCING SEMICONDUCTOR FAILURES 有权
    识别和减少半导体故障的方法和装置

    公开(公告)号:US20140097522A1

    公开(公告)日:2014-04-10

    申请号:US14051149

    申请日:2013-10-10

    IPC分类号: H01L29/06 H01L21/764

    摘要: The present disclosure provides multi-junction solar cell structures and fabrication methods thereof that improve electrical testing capability and reduce chip failure rates. In the present invention a special masking pattern is used in the layout such that all or some of the epitaxial layers are etched away in the corner areas of each solar cell. Consequently, the semiconductor substrate or one or more of the interconnections between junctions become accessible from the top (the side facing the sun) to make electrical connections.

    摘要翻译: 本公开提供了提供电测试能力并降低芯片故障率的多结太阳能电池结构及其制造方法。 在本发明中,在布局中使用特殊的掩模图案,使得在每个太阳能电池的拐角区域中蚀刻所有或一些外延层。 因此,半导体衬底或接点之间的一个或多个互连可从顶部(朝向太阳的一侧)接近以进行电连接。

    Multi-junction solar cell with dilute nitride sub-cell having graded doping

    公开(公告)号:US10355159B2

    公开(公告)日:2019-07-16

    申请号:US14935145

    申请日:2015-11-06

    摘要: A lattice-matched solar cell having a dilute nitride-based sub-cell has exponential doping to thereby control current-carrying capacity of the solar cell. Specifically a solar cell with at least one dilute nitride sub-cell that has a variably doped base or emitter is disclosed. In one embodiment, a lattice matched multi junction solar cell has an upper sub-cell, a middle sub-cell and a lower dilute nitride sub-cell, the lower dilute nitride sub-cell having doping in the base and/or the emitter that is at least partially exponentially doped so as to improve its solar cell performance characteristics. In construction, the dilute nitride sub-cell may have the lowest bandgap and be lattice matched to a substrate, the middle cell typically has a higher bandgap than the dilute nitride sub-cell while it is lattice matched to the dilute nitride sub-cell.