Suppression of Charge Recombination Rate in Nanocrystalline SnO2 by Thin Coatings of Divalent Oxides in Dye-Sensitized Solar Cells
- Suppression of Charge Recombination Rate in Nanocrystalline SnO2 by Thin Coatings of Divalent Oxides in Dye-Sensitized Solar Cells
- 이채현; 이기원; 강위경; 이도권; 고민재; 김경곤; 박남규
- Dye-Sensitized; SnO2; Core-shell; Surface coating; Dye-sensitized solar cell; Charge recombination; Nanocrystalline SnO2
- Issue Date
- Bulletin of the Korean Chemical Society
- VOL 31, NO 11, 3093-3098
- The core-shell SnO2@AO (A = Ni, Cu, Zn and Mg) films were prepared and the effects of coatings on photovoltaic properties
were investigated. Studies on X-ray photoelectron spectroscopy, energy dispersive X-ray analysis and transmission
electron microscopy showed the formation of divalent oxides on the surface of SnO2 nanoparticles. It was commonly
observed that all the dye-sensitized core-shell films exhibited higher photovoltage than the bare SnO2 film. Transient
photovoltage measurements confirmed that the improved photovoltages were related to the decreased time constants
for electron recombination.
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