We fabricated the ZnO nanorods with different Al3+-doped concentrations of 0%,0.5%,1.0% and 1.5 %,respectively.The morphology and the crystalline of Al-doped ZnO nanorods are investigated by using scanning electron microscope(SEM) and X-ray diffraction(XRD).The optical and electrical properties are researched by ultraviolet-visible(UV-VIS) absorption spectroscopy,time-resolved photoluminescence(TRPL) spectroscopy and sheet resistance.The analysis indicates that the ZnO nanorods are orderly arrayed and have good crystallinity.As the Al3+ doped concentration increasing,the conductivity of ZnO is improved and the electron transfer between donor and acceptor becomes faster.Finally,Al-doped ZnO nanorods are incorporated in the organic photovoltaic devices as both cathode and electron conductive layer.The optimized device(at lower doping of 0.5%) shows 30% higher Jsc and 50% higher photoelectric conversion efficiency(PCE) compared with the device without Al doping.