Preparation of titanium dioxide-double-walled carbon nanotubes and its application in flexible dye-sensitized solar cells  

作　　者：Cunxi CHENG Jihuai WU Yaoming XIAO Yuan CHEN Haijun YU Ziying TANG Jianming LIN Miaoliang HUANG 

机构地区：[1]Engineering Research Center of Environment-Friendly Functional Materials,Ministry of Education [2]Institute of Materials Physical Chemistry,Huaqiao University,Quanzhou 362021,China

出　　处：《Frontiers of Optoelectronics》2012年第2期224-230,共7页光电子前沿（英文版）

基　　金：This work was supported by the National High Technology Research and Development Program of China （No. 2009AA03Z217）, and the National Natural Science Foundation of China （Grant Nos. 90922028, 50842027）.

摘　　要：Titanium dioxide-double-walled carbon nano- tubes （TiO2-DWCNTs） with DWCNTs/TiO2 of 20 wt.% is prepared by a conventional sol-gel method. Doping the TiO2-DWCNTs in TiO2 photoanode, a flexible dye- sensitized solar cell （DSSC） is fabricated. The sample is characterized by scanning electron microscopy, X-ray diffraction （XRD）, Fourier transform infrared spectroscopy （FTIR） absorption, ultraviolet-visible spectroscopy （UV- vis） absorption spectra , electrochemical impedance spec- troscopy （EIS） technique and photovoltaic measurement. It is found that adding a certain amount of TiO2-DWCNTs can efficiently decrease the resistance of charge transport, improve dye adsorption. Under an optimal condition, a flexible DSSC contained with 0.50 wt.% TiOz-DWCNTs achieves a light-to-electric energy conversion efficiency of 3.89% under a simulate solar light irradiation of 100 mW. cm^2.Titanium dioxide-double-walled carbon nano- tubes （TiO2-DWCNTs） with DWCNTs/TiO2 of 20 wt.% is prepared by a conventional sol-gel method. Doping the TiO2-DWCNTs in TiO2 photoanode, a flexible dye- sensitized solar cell （DSSC） is fabricated. The sample is characterized by scanning electron microscopy, X-ray diffraction （XRD）, Fourier transform infrared spectroscopy （FTIR） absorption, ultraviolet-visible spectroscopy （UV- vis） absorption spectra , electrochemical impedance spec- troscopy （EIS） technique and photovoltaic measurement. It is found that adding a certain amount of TiO2-DWCNTs can efficiently decrease the resistance of charge transport, improve dye adsorption. Under an optimal condition, a flexible DSSC contained with 0.50 wt.% TiOz-DWCNTs achieves a light-to-electric energy conversion efficiency of 3.89% under a simulate solar light irradiation of 100 mW. cm^2.

关 键 词：flexible dye-sensitized solar cell （DSSC） titanium dioxide （TiO2） double-walled carbon nanotube（DWCNT） sol-gel method 

分 类 号：TQ134.11[化学工程—无机化工] TM914.4[电气工程—电力电子与电力传动]