TiO_2分枝纳米棒阵列的制备及其在杂化太阳能电池中的应用  

Fabrication of branched TiO_2 nanorod array for organic/inorganic hybrid solar cells

作　　者：胡奥 徐玲芳[1] 杨昌平[1] 屈少华 钟志成 汪竞阳 Hu Ao;Xu Lingfang;Yang Changping;Qu Shaohua;Zhong Zhicheng;Wang Jingyang(School of Physics and Electronic Science, Hubei University, Wuhan 430062;School of Physicsand ElectronicEngineering, Hubei University of Artsand Science, Xiangyang 441053)

机构地区：[1]湖北大学物理与电子科学学院,武汉430062 [2]湖北文理学院物理与电子工程学院,襄阳441053

出　　处：《化工新型材料》2018年第5期99-102,共4页New Chemical Materials

基　　金：国家自然科学基金青年项目(51302075);湖北省教育厅优秀中青年科技创新团队项目(T201511)

摘　　要：采用水热法制备了TiO_2纳米棒阵列及TiO_2分枝纳米棒阵列,利用X射线衍射仪、扫描电子显微镜观察了样品的微观结构形貌。以TiO_2纳米棒及分枝纳米棒阵列作为光阳极,组装成聚-3己基噻吩∶富勒烯衍生物/TiO_2(P3HT∶PCBM/TiO_2)杂化太阳能电池,测试了电池的光电性能。结果表明:用分枝结构纳米棒阵列制备的杂化电池效率显著高于普通TiO_2纳米棒阵列电池。由漫反射谱和电化学阻抗谱测量结果分析可知,由于分枝结构增大了TiO_2纳米棒阵列的比表面积,加快了载流子传输,减少了界面载流子复合,同时也增强了入射光散射,从而提升了杂化电池的性能。The TiO_2 nanorod arrays and branched TiO_2 nanorod arrays were prepared by hydrothermal method.The microstructure and morphology of samples were characterized by XRD,SEM.The organic/inorganic hybrid solar cells based P3 HT∶PCBM/TiO_2 branched TiO_2 nanorod arrays were also assembled.The photoelectric performance of cells were measured.The results showed that the efficiency of hybrid cell based on branched TiO_2 nanorod arrays was significantly higher than that of conventional nanorod arrays.By the analysis of diffuse reflectance spectroscopy and electrochemical impedance spectroscopy（EIS）measurements,the branching structure not only increased the surface area of TiO_2 nanorod arrays,accelerated the carrier transport and reduced the interfacial recombination of carriers,but also enhancd the incident light scattering,so as to enhance the performance of hybrid cells.

关 键 词：分枝TiO2纳米棒阵列 水热法 杂化太阳能电池 光电性能 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TM914.4[电气工程—电力电子与电力传动]