NICE MODULE TECHNOLOGY USING INDUSTRIAL N-TYPE SOLAR CELLS WITHOUT FRONT AND REAR BUSBARS

摘要

The reduction of manufacturing costs for solar panels remains the priority for all photovoltaicproducers in the world. Up to today strong efforts have been made to optimize the conventional cell and moduleprocesses (p-type silicon solar cells with selective or lightly doped emitters, standard lamination with glass / EVA /cells / EVA / PVF back sheet). From now on new strategies are required to go below the current production costs. Inthis work, we have investigated the possibility of using the NICE module technology ("New Industrial CellEncapsulation"), for the encapsulation of low cost n-type "PhosTop" cells. This combination with a soldering-freemodule technology allows removing Ag busbars from the front grid of the cells - resulting in considerable savings ofthis precious metal and the possibility to contact the full Al rear surface that is used to create the rear surface emitter.First full size test modules, using 60 Phostop cells, resulted in high module fill factors of > 75%.