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Fabrication and Characterization of Dye Sensitized Solar Cell Using Nanostructured TiO 2 Photoelectrode

Dye Sensitized Solar Cells (DSSCs) with photoelectrodes synthesized via Horizontal Vapor Phase Crystal (HVPC) Growth Technique were fabricated and characterized in the present study. Nanostructured TiO 2 was first synthesized on glass substrates at growth temperatures of 1000 o C, 1100 o C, and 1200 o C with varying substrate distance from the bulk powder. Flourine- doped Tin Oxide (FTO) was used to deposit nanostructured TiO2 for the photoelectrodes of the DSSCs employing the optimum substrate distance identified by SEM analysis. Bixin dye extracted from Annatto was utilized as a low-cost sensitizer and a graphite coated FTO as counter-electrode. All the DSSCs with photoelectrode fabricated by HVPC growth technique achieved a relatively large open-circuit voltage (Voc) of 387 mV, 427 mV, and 412 mV for growth temperature of 1000 o C, 1100 o C, and 1200 o C