SnO2 and F:SnO2 Inverse Opal Based Photoelectrochemcial Water Splitting

Wednesday, October 14, 2015: 15:50
104-B (Phoenix Convention Center)
S. H. Kang (Chonnam National University)
Nowadays, the exploration of new photoelectrode architectures to improve the light-harvesting and charge-collection properties of photoelectrochemical cells and related devices have been regarded as a challenging work. Here, we synthesized the inverse opal SnO2 for photoelectrochemical water splitting by the spin-coating method exploring the polystyrene beads with a size of approximately 350 nm. The SnO2 inverse opal structure shows the photonic crystal effect with a well-ordered hexagonal structure packing. Upon this film, the photoactive TiO2 layer with various thicknesses from 10 nm to 40 nm was deposited by atomic layer deposition. Herein, it is expected that an optimal TiO2 layer takes part in a role as a photoactive material. Adding to these results, the F doping on the SnO2 inverse opal film was also examined with the TiO2layers. These results were confirmed using Field-emission scanning electron microscopy, X-ray diffraction and ultraviolet-visible spectrophotometer. Detail results and discussion would be presented.