2013/11/02 by Elham Bayatloo, Bayatloo, Elham, Esmaiel Saievar-Iranizad +1
Energy · Engineering · Materials Science · #Chemical Physics (physics.chem-ph) #Chemical and Physical Properties of Materials #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Nanotechnology research and applications #TiO2 Photocatalysis and Solar Cells
paper · pdf · doi:10.48550/arxiv.1311.0415
openalex publication_date 2013/11/02 · openalex created_date 2022/10/07 · openalex updated_date 2026/07/28
The conversion efficiency of dye-sensitized solar cells (DSSCs) is optimized\nby modifying the optical design and improving absorbance within the cell. These\nobjectives are obtained by creating different sized cavities in TiO2\nphotoanode. For this purpose, carbon nanospheres with diameters 100-600 nm are\nsynthesized by hydrothermal method. A paste of TiO2 is mixed with various\namounts of carbon nanospheres. During TiO2 photoanode sintering processes at\n500C temperature, the carbon nanospheres are removed. This leads to random\ncreation of cavities in the DSSCs photoanode. These cavities enhance light\nscattering and porosity which improve light absorbance by dye N719 and provide\na larger surface area for dye loading. These consequences enhance performance\nof DSSCs. By mixing 3% Wt. carbon nanospheres in the TiO2 pastes, we were able\nto increase the short circuit current density and efficiency by 40% (from 12.59\nto 17.73 mA/cm2) and 33% (from 5.72% to 7.59%), respectively.\n