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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 33, Number 4
BKCSDE 33(4)
April 20, 2012 

Nanocrystalline Antimony Oxide Films for Dye-Sensitized Solar Cell Applications
Ji-Hye Kim, Jiyeon Jang, Sung-Chul Kim, Chi-Hwan Han, Seung-Joo Kim*
Dye-sensitized solar cells, Antimony oxide, Sb6O13, Photoelectrode
A new photoelectrode composed of Sb6O13 nanoparticles with the size of 20-30 nm has been prepared via thermolysis of a colloidal antimony pentoxide tetrahydrate (Sb2O5·4H2O) suspension. The Sb6O13 electrode showed good semiconducting properties applicable to dye-sensitized solar cells (DSSCs); the energy band gap was estimated to be 3.05 ± 0.5 eV and the position of conduction band edge was close to those of TiO2 and ZnO. The DSSC assembled with the Sb6O13 photoelectrode and a conventional ruthenium-dye (N719) exhibited the overall photo-current conversion efficiency of 0.74% (Voc = 0.76 V, Jsc = 1.99 mAcm−2, fill factor = 0.49) under AM 1.5, 100 mWcm−2 illumination.
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