Fabrication of highly efficient dye-sensitized solar cell and CO2 reduction photocatalyst using TiO2 nanoparticles prepared by spin coating-assisted sol–gel method

摘要: A sol–gel method was applied for fabrication of nanocrystalline anatase TiO2 thin films on ITO glass substrates and followed by rapid thermal annealing application as the work electrode dye-sensitized solar cells (DSSC). nanoparticles were characterized X-ray diffraction (XRD) pattern scanning electron microscopy (SEM) absorption dye shown UV–vis spectroscopy. By controlling different parameters including numbers coated layers, gap between two electrodes, sensitization time, light source power, TiO2-based with high efficiency achieved. The results show that a five time spin-coated applying sealant 24 h in N3 under illumination 100 W cm−2 tungsten lamp give optimum power conversion (η) 6.61%. increases thickness increasing layers can improve adsorption through to increase open-circuit voltage (V oc). However, short-circuit photocurrents (J sc) DSSCs one-coated layer are smaller than those five-coated films. It could be due fact increased also resulted decrease transmittance Also, this employed photoreduce CO2 H2O source.