title: Comparison of photovoltaic properties of TiO2 electrodes prepared with nanoparticles and nanorods.
abstract: In this report, single crystalline rutile TiO2 nanoparticles and nanorods were synthesized via the hydrothermal method using titanium tetra-isopropoxide as a precursor then, these were coated on top of a fluorine-doped tin oxide (FTO) substrate by using a doctor blade and direct deposition, respectively. Consequently, TiO2 nanorods-based dye-sensitized solar cells (DSSC) exhibit a J(sc) of 3.37 mA/cm2, a V(oc) of 0.82 V and fill factor of 60.1% with an overall conversion efficiency of 1.66%. This result shows an increase of around 38% for current density and 35% for conversion efficiency. Also, with respect to the impedance data, TiO2 nanorods-based DSSCs had smaller semicircles than did the nanoparticles-based DSSCs. These results demonstrate that the nanorod structure can have fast electron transport and reduced charge recombination.
authors.forename: Sang-Hun
authors.initials: SH
authors.lastname: Nam
authors.forename: Dong-Woo
authors.initials: DW
authors.lastname: Ju
authors.forename: Jin-Hyo
authors.initials: JH
authors.lastname: Boo