Abstract
A new photoelectrode composed of nanoparticles with the size of 20-30 nm has been prepared via thermolysis of a colloidal antimony pentoxide tetrahydrate () suspension. The electrode showed good semiconducting properties applicable to dye-sensitized solar cells (DSSCs); the energy band gap was estimated to be eV and the position of conduction band edge was close to those of and ZnO. The DSSC assembled with the photoelectrode and a conventional ruthenium-dye (N719) exhibited the overall photo-current conversion efficiency of 0.74% ( = 0.76 V, , fill factor = 0.49) under AM 1.5, illumination.
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