Abstract

A simple one-step heat-treatment of peroxotitanate complex aqueous solution at around 100 °C was resulted in the formation of ellipsoidal anatase TiO 2 nanoparticles having a high aspect ratio with no branches. The length of these ellipsoidal TiO 2 falls in the range of 200–350 nm, depending on mole ratio of Ti 4+/H 2O 2. Dye-sensitized solar cell based on these ellipsoidal nanocrystalline TiO 2 as photoanode was fabricated and characterized.

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