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The contact performance of seed-layer printed, fired and plated (SFP) contacts were studied on solar cells with different emitter sheet resistivities. For the seed layer of the SFP-contacts a special metal ink called SISC (seed layer ink for the metallization of solar cells), developed and fabricated at Fraunhofer ISE to contact lowly doped emitters was used. The doping profile and the surface concentration...
This paper presents a method to improve the efficiency of large area screen-printed silicon solar cells by about 0.3% to 0.4% absolute. By light-induced plating (LIP) the series resistance of screen-printed solar cells is reduced. The line conductivity of the front side metal conductors is improved without increasing the shaded area. This plating technique has been optimized for years at Fraunhofer...
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