Combinatorially variable etching of stacks including two dissimilar materials for etch pit density inspection
    14.
    发明授权
    Combinatorially variable etching of stacks including two dissimilar materials for etch pit density inspection 有权
    组合可变蚀刻堆叠,包括用于蚀刻坑密度检查的两种不同材料

    公开(公告)号:US08906709B1

    公开(公告)日:2014-12-09

    申请号:US14138797

    申请日:2013-12-23

    CPC classification number: H01L22/12 H01L21/6708 H01L21/67253 H01L22/20

    Abstract: Provided are methods of high productivity combinatorial (HPC) inspection of semiconductor substrates. A substrate includes two layers of dissimilar materials interfacing each other, such as a stack of a silicon bottom layer and an indium gallium arsenide top layer. The dissimilar materials have one or more of thermal, structural, and lattice mismatches. As a part of the inspection, the top layer is etched in a combinatorial manner. Specifically, the top layer is divided into multiple different site-isolated regions. One such region may be etched using different process conditions from another region. Specifically, etching temperature, etching duration and/or etchant composition may vary among the site-isolated regions. After combinatorial etching, each region is inspected to determine its etch-pit density (EPD) value. These values may be then analyzed to determine an overall EPD value for the substrate, which may involve discarding EPD values for over-etched and under-etched regions.

    Abstract translation: 提供了半导体衬底的高生产率组合(HPC)检验方法。 衬底包括彼此相互接合的两层不同材料,例如硅底层和砷化铟镓顶层的叠层。 不同材料具有热,结构和晶格失配中的一种或多种。 作为检查的一部分,顶层以组合方式蚀刻。 具体来说,顶层被分成多个不同的位置隔离区域。 可以使用与另一区域不同的工艺条件来蚀刻一个这样的区域。 具体地,蚀刻温度,蚀刻持续时间和/或蚀刻剂组成可以在位置隔离区域之间变化。 在组合蚀刻之后,检查每个区域以确定其蚀刻坑密度(EPD)值。 然后可以分析这些值以确定衬底的整体EPD值,这可能涉及丢弃过蚀刻和欠蚀刻区域的EPD值。

    Laser Annealing for Thin Film Solar Cells
    17.
    发明申请
    Laser Annealing for Thin Film Solar Cells 审中-公开
    激光退火薄膜太阳能电池

    公开(公告)号:US20140007938A1

    公开(公告)日:2014-01-09

    申请号:US14019413

    申请日:2013-09-05

    Abstract: A method for forming copper indium gallium (sulfide) selenide (CIGS) solar cells, cadmium telluride (CdTe) solar cells, and copper zinc tin (sulfide) selenide (CZTS) solar cells using laser annealing techniques to anneal the absorber and/or the buffer layers. Laser annealing may result in better crystallinity, lower surface roughness, larger grain size, better compositional homogeneity, a decrease in recombination centers, and increased densification. Additionally, laser annealing may result in the formation of non-equilibrium phases with beneficial results.

    Abstract translation: 使用激光退火技术形成铜铟镓(硫化物)硒化物(CIGS)太阳能电池,碲化镉(CdTe)太阳能电池和铜锌锡(硫化物)硒化物(CZTS))太阳能电池的方法来使吸收体和/或 缓冲层。 激光退火可能导致更好的结晶度,更低的表面粗糙度,更大的晶粒尺寸,更好的组成均匀性,复合中心的减少和增加的致密化。 另外,激光退火可能导致形成非平衡相,有利的结果。

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