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    • 5. 发明授权
    • Light directing element for photovoltaic device and method of manufacture
    • 用于光伏器件的光导元件及其制造方法
    • US5554229A
    • 1996-09-10
    • US391773
    • 1995-02-21
    • Craig N. Vogeli
    • Craig N. Vogeli
    • H01L31/0224H01L31/052H01L31/04H01L31/18
    • H01L31/022425H01L31/0547Y02E10/52
    • A light directing element for a photovoltaic device and method of manufacture. The light directing element is in the form of an encapsulating cover which fits onto the top of the underlying photovoltaic cell. A bottom surface of the encapsulating cover is provided with V-shaped grooves which are in registry with the underlying grid lines of the photovoltaic cell. Preferably, the side walls of the grooves are coated with a reflective coating. Incident light, falling on the reflective side walls will be reflected onto adjacent portions of the photovoltaic cell, thereby minimizing shading effects caused by the grid lines. In a particularly preferred embodiment, each groove in the cover is filled with a conductive carbon paste, and conductive wires are embedded therein. This conductive wires serve as the current collecting network of the solar cell and are in electrical communication with the top electrode thereof by means of the conductive carbon paste. This embodiment has the desirable combination of decreased shading, and lower electrical resistance of the current collecting network.
    • 一种用于光伏器件的导光元件及其制造方法。 导光元件是装配在下面的光伏电池的顶部上的封装盖的形式。 封装盖的底表面设置有V形凹槽,其与光伏电池的下面的栅格线对准。 优选地,凹槽的侧壁涂覆有反射涂层。 落在反射侧壁上的入射光将被反射到光伏电池的相邻部分上,从而最小化由栅格线引起的阴影效应。 在特别优选的实施例中,盖中的每个凹槽填充有导电碳浆,并且导电线嵌入其中。 该导线用作太阳能电池的集电网络,并且通过导电碳浆与其顶部电极电连通。 该实施例具有减少阴影和电流收集网络的较低电阻的期望组合。