Influence of geometrical thickness of SnO2 based photoanode on the performance of Eosin-Y dye sensitized solar cell

• Studied influence of photoanode thickness on the performance of SnO2 based DSSC.
• The variation in the LHE and ΦET were studied vs thickness of the photoanode.
• Best PV performance of SnO2 based DSSC with Eosin-Y dye sensitization till date.

In the present study, efforts have been taken to tune the optical parameters of SnO2 photoelectrode film to enhance the performance SnO2 based Dye Sensitized Solar Cell (DSSC). Influence of geometrical thickness of SnO2 based photoelectrode on light scattering magnitude and light harvesting capability was investigated using optical diffused reflectance and electrochemical impedance measurements. The short circuit current density (JSC) of the DSSC assembled using these photoanodes was apparently the decisive photovoltaic parameter in finalizing its photovoltaic efficiency (η). The variation in the light harvesting efficiency and the electron transfer yield were studied as a function of thickness of the photoanode by virtue of the light scattering magnitude in the films. These two factors appeared to have profoundly influenced JSC and so the photovoltaic performance of DSSC.