Study And Optimize On Dye-sensitized Solar Cells

To design and produce solar cells are fine choice in terms of energy shortage and cost effective. In the past two decades, dye-sensitised solar cells (DSSC) have infatuated researchers due to their high light to electricity conversion efficiency, low-cost, easy fabrication, and non-toxic as well as their promising alternative to conventional p-n junction solar cells.In this paper, we present a new way to produce the nanocrystalline SiO2/TiO2 membranes and fabricate the DSSC, and then optimized the performance of DSSC.1.Optimizing a process route of fabrication DSSC base on commercially-available TiO2 powder (P25)A stable paste is formered by dispersing P25 into ethyl alcohol and high viscosity,a-terpineol, as solvent, which has many advantages in terms of stabling at long-term and reproducible results. A porous TiO2 film was prepared by coated TiO2 paste onto a conductive glass by means of screen-print technique after sintering with high temperature. The influence of sintering method and film fabrication method are investigated. A optimize temperature at 525℃and a best gradient sintering curve was obtained. The influence of preparation nanocrystalline TiO2 film of aging time, the effect of TiCl4 and the thickness of film were studied. The impact of electrolyte, sensitization time and counter electrode for the performance of DSSC also be studied. The maximum ofηis 6.83% for the optimized cell based on P25.2. Optimizing a process route of fabrication DSSC base on adding with mesoporous SiO2 powderEmploying the optimized sintering method and DSSC fabrication method to the composite film which adding the mesoporous SiO2 into the P25 powder. Then the effect of adding with different quantity of SiO2 to the TiO2 nanoparticle was investigated. The influence of thickness of film, crystal of TiO2, morphology of film, surface area, performance of photoelectricity, layer of optimized, concentration of TiCl4 and constitute of electrolyte were studied. The maximum ofηis 8.42% for the optimized cell based on the compsite film of SiO2-TiO2.