Flexible Photoanode on Titanium Foil for Back-Illuminated Dye Sensitized Solar Cells

This paper reports the fabrication and analysis of flexible photoanode on titanium (Ti) foil for back-illuminated dye sensitized solar cells (DSSCs). Performance comparison with the solid state FTO glass based DSSC using the back-illumination and frond-illuminated techniques were also carried. During the fabrication process, the surface of Ti foil., had been treated with H
₂
O
₂
and doctor blade method was applied for deposition of the photoanode on substrates. The measurement results show that the fabricated DSSC with flexible photoanode has power conversion efficiency of 1.00% under back illuminated solar radiation of 1.5 A.M while DSSCs with solid state photoanodes have power conversion efficiency of 0.53% (back-illuminated) and 2.22% (front-illuminated)., respectively. The DSSC with flexible photoanode has better power conversion efficiency than the DSSC with solid-state photoanode under back-illumination condition. However., it is comparatively low from front illumination DSSC due to platinized counter electrode partially reflects light., while iodine in the electrolyte absorbs photons affects the performance.