中文摘要：

采用电化学方法首先在ITO导电玻璃上制备了一维有序ZnO纳米管阵列，然后在ZnO纳米管阵列上采用电化学方法沉积纳米枝状CdTe，形成了纳米枝状cdTe包覆ZnO纳米管的CdTe@ZnO壳核式复合结构，最后在上述复合结构中旋涂一层P3HT薄膜形成P3HT包覆的P3HT@CdTe@ZnO复合薄膜．以此复合薄膜为光活性层组装成半导体敏化太阳电池，研究了该类电池的光电转换性能，对该电池的工作原理进行初步研究，所得太阳电池能量转换效率最高达到1．38％．

英文摘要：

In this paper, we fabricated a semiconductor-sensitized solar cell using the photoelectrode based on poly（3-hexylthiophene） （P3HT） modified nanodendrite CdTe coated ZnO nanotube array （P3HT@CdTe@ZnO） composite film. One-dimensional vertically ordered ZnO nanotube arrays were prepared on ITO conductive glass substrate by electrochemical etching of the electrodep0sited ZnO nanorod arrays in alkaline solution. Nanodendrite CdTe was electrodeposited on ZnO nanotube array, and a CdTe nanodendrite coated ZnO nanotube array shell-core structure was obtained. Different CdTe nanodendrite length could be obtained by adjusting the total charge quantity applied during deposition. Then a thin P3HT layer was spin-coated onto the above n.anostructure, and a P3HT@CdTe@ZnO composite film was obtained. Scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, X-ray diffraction （XRD）, and energy dispersive-ray spectroscopy （EDS） were used to characterize the samples. The photoelectrochemical properties of the above samples were studied, and the results showed that CdTe and P3HT were excellent n-type and p-type materials. A suitable length of CdTe nanodendrite could improve thephotovoltaic properties of the solar cell, which was attributed to the enhanced light absorption in the visible region and the decrease in the recombination of photogenerated electrons and holes due to the multiple channels provided by nanodendrites. It has been demonstrated that the favourable hole transportation material P3HT coated on the surface of the CdTe@ZnO shell-core nanotube array largely improved the photoelectrochemical performance. A heterojunction was formed in the interface between n-type CdTe and p-type P3HT, and played an important role in the efficient charge separation and fast charge transportation. A semiconductor-sensitized solar cell with the P3HT@CdTe@ZnO film as photoactive layer was fabricated. The photovoltaic properties of the semiconductor-sensitized solar cell was studied, and the mech