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TiO 2 anatase nanoparticles were synthesized from a titanate for application in dye-sensitized solar cells. Structural analysis with x-ray absorption fine structure spectroscopy showed that this titanate-derived TiO 2 had a low density of oxygen-vacancy defects that would serve as the trap sites to impede electron transport. The transit time of the photogenerated electrons, measured by intensity modulated photocurrent spectroscopy, was significantly shorter in the titanate-derived TiO 2 than indoi:10.1063/1.2800879 fatcat:jubmb2vdbjbaddilw5cv5ruhfi