| 초록 |
In this study, we present a novel means of engineering the surface of DSSC photoelectrodes by utilizing structural characteristics of added polymer or biomolecules, whereby the optimized interfaces between electrolytes / semiconductor oxide photoelectrodes / current collector can be constructed and the enhanced photoconversion efficiency is obtained, accordingly. When a selective deposition characteristic of polyelectrolyte multilayers on non-flat surface is employed, the surface roughness of a current collector of ITO or FTO can be reduced and an idealized contact condition with the TiO2 photoelectrode can be realized without sacrificing the electrical conductivity. In addition, when one-dimensional biomolecules of viruses are incorporated with TiO2 photoelectrode, porously interconnected channel structures can be developed for enhanced pathways of electron transport and electrolytes contact. |
