| 초록 |
The usual way to make good use of the sunlight which works as driving force in the DSSCs is to let the light stay longer in the cell through a diffraction layer on the photo-electrode. For the easiest and the most reduced process which fabricates photoelectrode including light scattering particle, electrospun TiO2 nanofiber was directly mixed in rod-shape with existing TiO2 paste without subsequent insertion of diffraction layer. Densely packed TiO2 nanoparticle in electrospun nonorods provide pathway along which electrons move directly. The change of the crystal structure of the nanorod was obviously confirmed depending on sintering temperature (450℃, 650℃, 750℃, 850℃, 1000℃) by XRD and TEM. And the I-V curves showed that 850℃ sintered nanorod mixed TiO2 photo –elecrode performed the highest efficiency. The efficiency increased from 5.27% to 6.22 and it was non- nanorod mixed and 850℃ sintered nanorod mixed photo-electrode respectively. |
