Hydrothermal synthesis of ordered single-crystalline rutile TiO_2 nanorod arrays on different substrates

摘要

We report the mild hydrothermal synthesis of single-crystalline rutile TiO_2 nanorod arrays (NRAs). The method reported here shows great versatility and can be used to grow TiO_2 NRAs on a large diversity of substrates including Si, Si/SiO_2, sapphire, Si pillars, and fluorine doped tin oxide (FTO)-covered glass. The average diameter and length of the nanorods prepared at typical conditions are ～60 nm and 400 nm, respectively. Dye-sensitized solar cells assembled with the TiO_2 NRAs grown on the FTO-covered glass as photoanode were prepared with a photoconversion efficiency of ～1.10%.