SnO2 nanowires decorated with forsythia-like TiO2 for photoenergy conversion

초록

We report forsythia-like TiO2-decorated SnO2 nanowires on fluorine-doped SnO2 electrode as a photo-electrode of dye-sensitized solar cells. When SnO2 nanowires grown via vapor-liquid-solid reaction were soaked in TiCl4 solution, leaf-shaped rutile TiO2 was grown onto the surface of the nanowires. The TiO2 decoration increases the short circuit current (J(sc)), open circuit voltage (V-oc) and fill factor (FF) of dye-sensitized solar cells. Further, electron lifetime increased by employing an atomic-layer-deposited TiO2 nanoshell between the TiO2 leaves and the SnO2 nanowire, due to preventing charge recombination at the nanowire/electrolyte interface. (C) 2017 Elsevier B.V. All rights reserved.

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