摘要
采用水热法合成TiO2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TiO2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TiO2阵列,其MEH-PPV/TiO2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Jsc从3.53mA/cm2增加到6.73mA/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TiO2与聚合物之间的相容性,从而达到提高聚合物/TiO2界面电荷分离效率和光电流的效果.
The TiO2 nanorod arrays were prepared by hydrothermal method,amphiphilic modification with N719 at TiO2nanorod interface by solvothermal method is applied to the MEH-PPV/TiO2 solar cells based on TiO2 nanorod arrays.Results show that the performance of MEH-PPV/TiO2 is improved noticeably after N719 modification,resulting in increasing Jscfrom 3.53mA/cm2 to 6.73mA/cm2andηfrom 0.47 to 0.80%,respectively under the AM1.5illumination.PL and IPCE characterization show that the presence of N719 improves the compatibility between TiO2 and MEH-PPV,and increases the charge separation efficiency at MEH-PPV/TiO2 interface and photocurrent.
出处
《湖州师范学院学报》
2015年第2期29-34,共6页
Journal of Huzhou University
基金
浙江省自然科学基金资助项目(LQ14F040003)
