Preparation of nano-crystal N-Zn/TiO_2 anode films and the effects of co-sensitization on the performance of dye-sensitized solar cells  

作　　者：FU ZhenHai ZHANG JingChang YANG XiuYing CAO WeiLiang 

机构地区：[1]Institute of Modern Catalysis, Beijing University of Chemical Technology, State Key Laboratory of Chemical Resource Engineering, Beijing 100029, China [2]Hainan Institute of Science and Technology, Haikou 571126, China

出　　处：《Chinese Science Bulletin》2011年第19期2001-2008,共8页

基　　金：supported by the National High Technology Research and Development Program of China (2006AA03z412);the Department of Education Research Project of Hainan (Hj2010-52);the Scientific Research Foundation of the Graduate School of Beijing University of Chemical and Technology (09Si005);the Key Science Planning Program of Hainan (ZDXM20100062);the National High Technology Research and Development Program of Hainan (509013)

摘　　要：A nano-crystal N–Zn/TiO 2 anode film was prepared using a combined technology. X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy and cyclic voltammetry characterizations showed that the two elements N and Zn were doped into nano-crystal TiO 2 successfully. This resulted in a strong redshift in the UV-Visible spectrum. UV-Visible measurements showed that the light absorption of N719 and P3OT were complementary and covered the entire visible region. This led to a high utilization of visible light. Solar cells based on the N–Zn/TiO 2 anode film were co-sensitized using P3OT and N719. The cells have a short-circuit current density of 7.91 mA/cm 2 , an open-circuit photovoltage of 0.659 V, and a photoelectric conversion efficiency of 2.64%. Also, the relationship among the N–Zn/TiO 2 -film anode’s electric structure, the dye’s LUMO, electrochemical impedance, and photoelectric conversion efficiency are discussed in the paper.A nano-crystal N-Zrl/TiO2 anode film was prepared using a combined technology. X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy and cyclic voltammetry characterizations showed that the two elements N and Zn were doped into nano-crystal TiO2 successfully. This resulted in a strong redshift in the UV-Visible spectrum. UV-Visible measurements showed that the light absorption of N719 and P3OT were complementary and covered the entire visible region. This led to a high utilization of visible light. Solar cells based on the N-Zn/TiO2 anode film were co-sensitized using P3OT and N719. The cells have a short-circuit current density of 7.91 mA/cm2, an open-circuit photovoltage of 0.659 V, and a photoelectric conversion efficiency of 2.64%. Also, the relationship among the N-Zn/TiO2-film anode＇s electric structure, the dye＇s LUMO, electrochemical impedance, and photoelectric conversion efficiency are discussed in the paper.

关 键 词：染料敏化太阳能电池 合作意识 制备技术 纳米晶体 阳极膜 X射线光电子能谱 光电转换效率 透射电子显微镜 

分 类 号：TM914.4[电气工程—电力电子与电力传动]