采用水热法制备了ZnO纳米棒, 以ZnO纳米棒为原料制备出ZnO/TiO2纳米管晶膜电极并应用于染料敏化太阳能电池. 用扫描电镜(SEM)、X射线衍射仪(XRD)、X射线能谱仪(EDX)和N2吸脱附分析等研究了样品的结构、表面形貌和化学组成, 并通过紫外?可见光度计和电化学工作站探讨了煅烧温度在80 ~ 600℃范围内ZnO/TiO2纳米管电极的光电化学性能. 此外, 研究经TiCl4化学处理的ZnO/TiO2纳米管电极光电性能的改善情况. 结果表明, 600℃煅烧的ZnO/TiO2纳米管电极制备的染料敏化太阳能电池表现出较优的光电性能, 其短路电流密度(Jsc)为 2.28 mA/cm2, 开路电压(Voc)为0.631 V, 光电转换效率η为0.66%. 600℃煅烧的ZnO/TiO2纳米管经TiCl4处理后的染料敏化太阳能电池的光电性能得到显著改善, 其光电转换效率η提高到1.06%.
ZnO/TiO2 nanotubes were prepared using ZnO nanorods as raw materials, which were synthesized by hydrothermal methods. Then its performance as an electrode of a dye-sensitized solar cell was investigated. The obtained products were characterized by SEM, XRD, EDX and N2 adsorption. Furthermore, the photoelectric properties of ZnO/TiO2 nanotubes film electrodes calcined at different temperatures were investigated by UV-Vis adsorption spectra and electrochemical workstation. It is found that the DSSC based on ZnO/TiO2 nanotubes calcined at 600℃ have optimum photoelectric properties, Jsc=2.28 mA/cm2 and Voc= 0.631 V, yielding the 0.66% maximum conversion efficiency. Additionally, after TiCl4 posttreatment, the performance of DSSC made from ZnO/TiO2 nanotubes are improved obviously and the photoelectric conversion efficiency is up to 1.06%.
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