PASSIVATION FILM STACK FOR SILICON-BASED SOLAR CELLS
    2.
    发明申请
    PASSIVATION FILM STACK FOR SILICON-BASED SOLAR CELLS 审中-公开
    用于硅基太阳能电池的钝化膜片

    公开(公告)号:US20130247972A1

    公开(公告)日:2013-09-26

    申请号:US13768761

    申请日:2013-02-15

    CPC classification number: H01L31/1868 H01L31/02167 Y02E10/50 Y02P70/521

    Abstract: Methods of forming a passivation film stack on a surface of a silicon-based substrate are provided. In one embodiment, the passivation film stack includes a silicon nitride layer and an aluminum oxide layer disposed between the silicon nitride layer and the silicon-based substrate. The aluminum oxide layer is deposited such that the aluminum oxide layer has a low hydrogen (H) content less than about 17 atomic % and a mass density greater than about 2.5 g/cm3. The silicon nitride layer is deposited on the aluminum oxide layer such that the silicon nitride layer has a low hydrogen (H) content less than about 5 atomic %, and a mass density greater than about 2.7 g/cm3. Reduced amount of hydrogen content in the aluminum oxide layer and the silicon nitride layer prevents gas bubbles from forming in the layers and at the interface of the passivation film stack that cause the film stack to blister.

    Abstract translation: 提供了在硅基基板的表面上形成钝化膜堆叠的方法。 在一个实施例中,钝化膜堆叠包括氮化硅层和设置在氮化硅层和硅基衬底之间的氧化铝层。 沉积氧化铝层使得氧化铝层具有低于约17原子%的低氢(H)含量和大于约2.5g / cm 3的质量密度。 氮化硅层沉积在氧化铝层上,使氮化硅层的氢(H)含量低于约5原子%,质量密度大于约2.7g / cm3。 氧化铝层和氮化硅层中的氢含量的降低可以防止在钝化膜堆叠的层内和界面处形成气泡,导致膜堆叠起泡。

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