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Enhanced Efficiency of Dye-sensitized Solar Cells Using rGO@TiO2 Nanotube Hybrids |
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| Authors: | LIU Rui QIAO Yingjie SONG Yingjin SONG Kehan LIU Chuan |
| Institution: | 1. School of Science, Harbin University of Commerce, Harbin 150076, P. R. China; 2. College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China; 3. Department of Chemistry, Harbin University, Harbin 150050, P. R. China; 4. Department of Chemistry, Qiqihar University, Qiqihar 161006, P. R. China |
| Abstract: | We established a novel strategy for the synthesis of reduced graphene oxide(rGO)@TiO2 nanotube hybrids using an 18 W UV-assisted photo-catalytic reduction method for utilization as photo-anode of dye-sensitized solar cells(DSSCs). The photo-conversion efficiency of DSSCs was significantly enhanced after the addition of rGO, and in addition, the photo-anode showed decreased internal resistance. Analysis of rGO@TiO2 hybrids by transmissions scanning electron microscopy(TEM), X-ray diffraction(XRD), Raman spectra, N2 adsorption and desorption, atomic force microscopy(AFM) and X-ray photoelectron spectroscopy(XPS) demonstrates that the rGO modified TiO2 nanotubes can increase the short-circuit current and the conversion efficiency of dye-sensitized solar cells. The efficiency is improved by almost two folds as much compared to those of the bare TiO2 nanotubes. |
| Keywords: | TiO2 nanotube array Reduced graphene oxide(rGO) Hybrid Dye-sensitized solar cell(DSSC) |
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