Length control of packed single crystalline TiO2 nanorods for dye-sensitized solar cell

Photovoltaic solar cells have been spotlighted with the growing demands of green and clean energy. Especially, since Oregan and Gratzel reported mesoporous TiO2 electrode dye sensitized solar cells (DSSCs) in 1991, the related works have been widely reported for the enhanced performance. Dyes with high adsorption coefficient and electrolyte with more stability need to be considered for improving DSSCs performance. Moreover, the study has been focused on the functions of the fast electron transport and high electron collecting ability. Nanocrystalline TiO2 electrode with 12 μm-thick film on a fluorine doped tin oxide (FTO) coated glass is the most general photoelectrochemical architecture considering its large surface area. However, electrons trapping at the contacts between nanoparticles suppress the electron diffusion of nanoparticulate films.