INOR 160 |
| Dye-sensitized solar cell (DSSC) based on nanocrystalline TiO2 films presents an attractive alternative to conventional solid-state devices. In this study, the organized mesoporous TiO2 with various surface areas and pore diameters were synthesized by the sol-gel method for the application to DSSC. Titanium tetra(isopropoxide) was used as the precursor for fabrication of mesoporous TiO2 in the presence of triblock copolymer (Pluronic P123) at concentration of 1.7-5.2 x10-4 mole. XRD patterns, SEM and TEM images showed that the organized mesoporous TiO2 was mainly anatase with particle sizes of 10-20 nm. A type IV adsorption curve was observed and the specific surface areas were in the range 109-183 m2/g. The mesoporous TiO2 paste was deposited on ITO plates by screen printing, sensitized by dye N3. The dye-sensitized TiO2 electrode were incorporated into sandwiched solar cells. The photocurrent-voltage curves were measured under illumination with AM 1.5 solar light. The relationship between the performance of DSSC and the physicochemical properties of mesoporous TiO2 was established and discussed in this study. |
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Applications of Materials
7:00 PM-10:00 PM, Sunday, August 19, 2007 BCEC -- Exhibit Hall - B2, Poster
Division of Inorganic Chemistry |