Solution-processed bulk heterojunction solar cells based on a zinc phthalocyanine: perylene dimiide derivative

Abstract

A solution processed ZnPc:PTDCI bulk heterojunction solar cells doped with iodine were fabricated and characterized. Photovoltaic properties of the solar cells were investigated by optical absorption, current densityvoltage characteristic and external quantum efficiency. The absorption of ZnPc:I2:PTDCI was observed in the (300-800) nm region. Solar cells with a power conversion efficiency of about 2.4% has been obtained using simply drop casting and spin-coating methods without special treatment. The peak of the external quantum efficiency characteristics of the ITO/PEDOT:PSS/ZnPc:I2:PTCDI/Al solar cells is 10%.