Performance of OPVs cells with the eutectic alloy Wood's metal used as cathode and P3HT:PC61BM blend as active layer

OPVs cells based on the well known photoconductor polymer blends of P3HT:PC61BM were fabricated by using Wood's metal as cathode under a vacuum free process. Wood's metal is a eutectic alloy of Pb/Bi/Cd/Sn (25%, 50%, 12.5% and 12.5%, respectively) that melts at 75 °C, and permits an easy and quick device implementation. As anode, the commercial and transparent indium tin oxide (ITO) deposited on glass slides was used. The photovoltaic performance of these OPVs cells is compared to other results reported recently in the literature, where most of the OPVs devices were fabricated by using standard methods. Our OPVs cells electrical conversion parameters: Voc = 528 mV, Jsc = 7.35 mA/cm2, FF = 0.45 and η = 1.8% are very acceptable. The metal alloy used here could make suitable the easy and fast test of mass production for solar panels.

► OPVs cells based on P3HT:PC61BM are fabricated with Wood's metal as cathode.
► Wood's metal is a eutectic alloy of Pb/Bi/Cd/Sn that melts at 75 °C.
► It could make suitable the easy and fast test of mass production for solar panels.