中文摘要：

染料敏化太阳电池，因其较低的制作成本和较高的能量转化效率而备受关注．目前，其最高的能量转换效率已经达到11％．但光生载流子在传输过程中受到颗粒表面态能级的捕获和热释放的影响，因此，穿过整个纳米颗粒薄膜需要毫秒到秒的数量级，这种慢传输过程增加了复合几率，限制了能量的转化效率．近年来，为了改善电荷传输，

英文摘要：

The TiO2 based dye-sensitized solar cells doped with different sizes of ZnO nanorods were fabricated and studied by photoelectrochemical measurements. The results show that the energy conversion efficiency of the dye-sensitized solar cells after the addition of ZnO nanorods （ 1 %, mass fraction） was increased by 6%--20% in comparison with that without ZnO nanorods. The effect of different sizes of ZnO nanorods on the electronic transportation properties was studied in the composite semiconductor film by means of transient photovohage technology（TPV）. The result indicates that the electron diffusing velocity in N3-sensitized TiO2/ZnO film electrode was about 1-3 order of magnitude faster than that in TiO2 electrode. The experimental results indicate that the TiO2/ZnO electrode can improve the electron transport, decrease the recombination, enhance Voc, and increase efficiency of energy conversion.