采用水热法合成 TiO 2纳米棒阵列,将双亲性染料有机分子 N719通过溶剂热反应方法对 TiO 2纳米棒表面进行修饰,并与共轭聚合物 MEH PPV 匹配制备成杂化太阳电池.研究结果表明,经过 N719改性的 TiO 2阵列,其 MEH PPV/TiO 2杂化太阳电池的性能得到了提高.在一个标准太阳光(AM1.5)下,电池短路电流密度 J sc从3.53 mA/cm2增加到6.73 mA/cm2,电池的转化效率从0.47%提高到0.80%.经荧光光谱和外量子效率测试表明,染料分子的修饰可以改善 TiO 2与聚合物之间的相容性,从而达到提高聚合物/TiO 2界面电荷分离效率和光电流的效果.%The TiO 2 nanorod arrays were prepared by hydrothermal method,amphiphilic modifica-tion with N71 9 at TiO 2 nanorod interface by solvothermal method is applied to the MEH PPV/TiO 2 solar cells based on TiO 2 nanorod arrays.Results show that the performance of MEH PPV/TiO 2 is im-proved noticeably after N71 9 modification,resulting in increasing J sc from 3.53 mA/cm2 to 6.73 mA/cm2 andηfrom 0.47 to 0.80%,respectively under the AM1.5 illumination.PL and IPCE characterization show that the presence of N71 9 improves the compatibility between TiO 2 and MEH PPV,and increa-ses the charge separation efficiency at MEH PPV/TiO 2 interface and photocurrent.
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