BANDGAP NARROWING OF TITANIUM DIOXIDE BY SULFUR DOPING

@inproceedings{Yamaki2002BANDGAPNO,
  title={BANDGAP NARROWING OF TITANIUM DIOXIDE BY SULFUR DOPING},
  author={T Yamaki and H Itoh and K Kasai},
  year={2002}
}
  • T Yamaki, H Itoh, K Kasai
Titanium dioxide (TiO2) doped with sulfur (S) was synthesized by oxidation annealing of titanium disulfide (TiS2). According to the x-ray diffraction patterns, TiS2 turned into anatase TiO2 when annealed at 600 °C. The residual S atoms occupied O-atom sites in TiO2 to form Ti–S bonds. The S doping caused the absorption edge of TiO2 to be shifted into the lower-energy region. Based on the theoretical analyses using ab initio band calculations, mixing of the S 3p states with the valence band was… CONTINUE READING