Login Register
 
Home Accepted Papers
Dye Sensitized Solar Cell Based on Hierarchical Porous Titania Photoanode Prepared by Controlled Phase Separation
Paper ID : 2349-UFGNSM13-FULL
Authors:
Abstract:
Dye sensitized solar cells are promising devices for human’s developing energy demands for the next twenty years. However, using volatile electrolyte in these cells limits their performance and efficiency. Solid state electrolytes are good candidate for improving the cell stability. Meanwhile, utilizing hierarchical porous structure not only allows the diffusion of solid electrolyte through micro-channels, but also provides the high surface area of mesoporosity. The hierarchical porous titania photoanodes were synthesized by the sol-gel assisted controlled phase separation method. Then, dye sensitized solar cells based on these photoanodes were fabricated. X-ray diffraction results showed that the photoanodes were mainly comprised of anatase phase. Field emission scanning electron micrographs revealed the formation of macropores and mesopores with sizes of 280 of 20 nm, respectively. The efficiency of the cell was about 3.55% with current density of 8.75 mA/cm2, open circuit voltage of 690 mV, and fill factor of 59%.
Keywords:
Hierarchical porosity, TiO2, Phase separation, Dye sensitized solar cell.
Status : Paper Accepted (Oral Presentation)