Fig. 5
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Measured fracture stress of the front and rear side of bifacial TOPCon solar cells with either screen printed AgAl(front side)/Ag(rear side) or plated Ni/Cu/Ag metal contacts (a). The grey area in (a) represents a typical fracture stress regime of PERC solar cells from literature [11]. The right image (b) shows the 4-point bending test of a bifacially plated TOPCon solar cell.
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