Abstract:
Dye – sensitized solar cells (DSSCs) are the third-generation low-cost solar cells.
Photoanode, electrolyte and counter electrodes are the main components of a dyesensitized solar cells. Generally, commercially available inorganic dyes are used
as the sensitizers in dye-sensitized solar cells. Overall performance of the dyesensitized solar cell can be enhanced by modifying these components. In DSSC,
commercially available dyes are generally used. They show a better performance.
But they are the expensive materials. In this study, Bismuth Oxyiodide (BiOI) has
been synthesized on TiO2 nanostructure by successive ionic layer adsorption and
reaction (SILAR) technique. In order to fabricate highly efficient solar cell,
number of SILAR cycles were optimized and compared with the N719 dye –sensitized solar cells under the same conditions. Fabricated BiOI - sensitized solar
cell shows a maximum efficiency of 0.54% while the N719 dye-sensitized solar
cell shows an efficiency of 3.33% under the illumination of 100 mW cm-2 with AM
1.5 spectral filter. However, BiOI can be used as a low-cost sensitizer for dyesensitized solar cells.
