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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 31, Number 11
BKCSDE 31(11)
November 20, 2010

Title	Suppression of Charge Recombination Rate in Nanocrystalline SnO₂ by Thin Coatings of Divalent Oxides in Dye-Sensitized Solar Cells
Author	Chaehyeon Lee, Gi Won Lee, Weekyung Kang, Doh Kwon Lee, Min Jae Ko, Kyoungkon Kim, Nam Gyu Park*
Keywords	Core-shell, Surface coating, Dye-sensitized solar cell, Charge recombination, Nanocrystalline SnO₂
Abstract	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.
Page	3093 - 3098
Full Text	PDF

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