| 초록 |
In this study, we have successful synthesized ordered mesoporous SnO2/TiO2 with three-dimensional bicontinuous cubic structure, high surface area and crystalline frameworks by using a facile solvent-free infiltration method from a mesoporous silica template of KIT-6. Then employed it as electrode in dye-sensitized solar cells. On the basis of the investigation of the XRD pattern, nitrogen adsorption (BET), dye adsorption, UV-vis diffuse reflectance spectroscopy, dark current, current-voltage(I-V)characteristics and electrochemical impedance spectra(EIS),it was found that when the Ti-content is 20wt%, the energy-conversion efficiency meso-SnO2/TiO2 is significantly best, by about 1.95%. And it is mainly the result of TiO2 particles on mesoporous SnO2 electrode inhibited electron recombination caused by passivation of reactive surface states and increased the light scattering, leading to greatly improvement in the open-circuit voltage, short-circuit current, and fill factor. |
