中文摘要：

采用溶胶-凝胶法和旋转涂覆法在FTO导电玻璃上制备ZnO种子层，以Zn（NO3）2和六亚甲基四胺（HMT）的混合溶液为生长液在ZnO种子层上制备出ZnO纳米棒薄膜，利用x射线衍射（XRD）、扫描电镜（SEM）对ZnO种子层及纳米棒薄膜的晶相及表面微观形貌进行了表征；研究了生长液浓度、生长时间对ZnO纳米棒薄膜生长的影响。实验表明，制备排列整齐的ZnO纳米棒阵列薄膜最佳条件为90℃环境下，基底竖直放置在0．025mol／L的生长液中，生长4h，纳米棒平均直径80nm左右。从新鲜草莓、桑葚中提取天然色素，对ZnO纳米棒电极进行敏化，组装成光电池；测试敏化电极的吸收光谱及光电池的伏安特性曲线。结果表明，桑葚色素在可见光区有更强的吸收特性，由桑葚色素敏化的电极组装的光电池，在模拟太阳光下，得到开路电压为228．75mV，短路电流为189ffA，填充因子为0．37，光电转换效率为5．5×10-4。

英文摘要：

ZnO seed layers were prepared by sol-gel method and spin coating method on the substrate which is FTO/glass. The prepared substrates with seed layer were immersed into the precursor solution which contains zinc nitrate and hexamethylenetetramine（HMT） under different growth time and solution concentrations. The ZnO nanorod electrodes were characterized by XRD and SEM. We obtain orderly ZnO nanorod array at 90 ℃ with growth time of 4 h,the solution concentration of 0. 025 mol/L,and the average diameter about 80 nm. Using the natural dye extracted from fresh strawberries and mulberries as sensitizers,the natural dye sensitized ZnO nanorod film electrodes were prepared and the dye sensitized solar cells were fabricated. The absorption spectra of sensitized electrodes were characterized,and the result shows that the electrode with mulberries as sensitizer has a good absorbance in visible light area. In simulation,the solar cell with mulberries as sensitizer has excellent photoelectric characteristics,a filling factor of 0. 37 ,a shorvcircuit photocurrent of 189μA,an open-circuit voltage of 228.75 mV,and an optic-electric conversion efficiency of 5.5 × 10-4.