Preparation of nano-crystal N-Zn/TiO2 anode films and the effects of co-sensitization on the performance of dye-sensitized solar cells

被引：13

作者：

Fu ZhenHai ^{[1
]}

Zhang JingChang ^{[1
,2
]}

Yang XiuYing ^{[2
]}

Cao WeiLiang ^{[1
,2
]}

机构：

[1] Beijing Univ Chem Technol, Inst Modern Catalysis, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

[2] Hainan Inst Sci & Technol, Haikou 571126, Peoples R China

来源：

CHINESE SCIENCE BULLETIN | 2011年 / 56卷 / 19期

基金：

国家高技术研究发展计划(863计划);

关键词：

dye-sensitized solar cells; nano-crystal N-Zn/TiO2 anode film; co-sensitization; electrochemical impedance spectroscopy; energy level match; photoelectric properties; CHARGE-TRANSFER; TIO2; CONVERSION; EFFICIENCY; SURFACE;

D O I：

10.1007/s11434-011-4535-7

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

A nano-crystal N-Zn/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/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/TiO2-film anode's electric structure, the dye's LUMO, electrochemical impedance, and photoelectric conversion efficiency are discussed in the paper.

引用

页码：2001 / 2008

页数：8

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