| 초록 |
In DSSCs, photoelectrode of high specific surface area performs a significant role due to increase the dye loading, which might help to enhance the cell performance and transforming it into electricity. Thus, focus on fabrication of high surface area of photoelectrode and achieve appreciable efficiency of photoconversion devices in this research. TiO2 nanoparticles were surface-modified via atom transfer radical polymerization (ATRP) with hydrophilic poly(metyl methacrylate) (PMMA), which can photodegradable by UV irradiation. Following application of a photodegradation process, sol-gel process and calcination at 450oC, photoelectrode with high ordered structure were generated. As a demonstration of a potential application, these high ordered TiO2 have been used as a photoelectrode to fabricate DSSCs using a quasi solid polymer electrolyte. High ordered TiO2 photoelectrode with efficiencies of 5.1% was recorded under light intensity of 100mW/cm2 illumination which was significantly higher than a commercial Degussa P25 TiO2 nanoparticle photoelectrode (3.8%). |
