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    • 58. 发明授权
    • Simultaneous QE scanning system and methods for photovoltaic devices
    • 光电器件同步QE扫描系统及方法
    • US08350585B2
    • 2013-01-08
    • US13149100
    • 2011-05-31
    • Scott Daniel Feldman-Peabody
    • Scott Daniel Feldman-Peabody
    • G01R31/26
    • H02S50/10
    • Methods for simultaneously making quantum efficiency measurements at multiple points in a photovoltaic cell are provided. A light beam (e.g., monochromatic light) can be directed to a first beam splitter, where it is split into a first reflected portion and a first passthrough portion such that the first reflected portion is directed to a first point on the photovoltaic cell. The first reflected portion can then be chopped at a first frequency between the first beam splitter and the first point. The first passthrough portion of the light beam can be reflected at a second beam splitter to a second point on the photovoltaic cell. The second reflected portion can then be chopped at a second frequency between the second beam splitter and the second point. Finally, the quantum efficiency can be calculated at both the first point and the second point. Systems are also generally provided for simultaneously making quantum efficiency measurements at multiple points in a photovoltaic cell.
    • 提供了在光伏电池中的多个点处同时进行量子效率测量的方法。 光束(例如,单色光)可以被引导到第一分束器,其中它被分成第一反射部分和第一穿通部分,使得第一反射部分被引导到光伏电池上的第一点。 然后可以在第一分束器和第一点之间以第一频率切割第一反射部分。 光束的第一通道部分可以在第二分束器处被反射到光伏电池的第二点。 然后可以在第二分束器和第二点之间以第二频率切割第二反射部分。 最后,可以在第一点和第二点计算量子效率。 还通常提供系统以同时在光伏电池中的多个点进行量子效率测量。