Organic/inorganic hybrid solar cells with vertically oriented ZnO nanowires

Hybrid photovoltaic (PV) devices based on copper-phthalocyanine and fullerene combined with ZnO nanowire array as direct charge transport paths were fabricated. The optimized device with ZnO nanowire has a more than fourfold increase in PV performance than the device without nanowire. The former has an open circuit voltage of 0.46 V, a short circuit current of 3.86 mA/cm2, a fill factor of 0.30, and a power conversion efficiency of 0.53%. The hybrid device based on ZnO nanowires with improved PV performance suggests a way for fabrication of PV device with more exciton dissociation interface area and continuous carrier transport paths.