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.
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）.
