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ABSTRACT: This paper presents a process for electroplating thick gold grid fingers for use as part of the contact layer on GaAs concentrator solar cells. This process is more economical than evaporation and is shown to produce grid fingers with low resistivity and contact resistance. Cell results show low overall series resistance values of near 15 m Â¿-cm<sup>2</sup> and peak efficiencies near 400 suns, much higher than attained with a thinner evaporated grid.
Photovoltaic Specialists Conference (PVSC), 2009 34th IEEE; 07/2009