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Nanostructured TiO2 films for dye-sensitized solar cells

Title
Nanostructured TiO2 films for dye-sensitized solar cells
Authors
Paek S.-M.Jung H.Lee Y.-J.Park N.-G.Hwang S.-J.Choy J.-H.
Ewha Authors
최진호황성주
SCOPUS Author ID
최진호scopus; 황성주scopus
Issue Date
2006
Journal Title
Journal of Physics and Chemistry of Solids
ISSN
0022-3697JCR Link
Citation
vol. 67, no. 5-6, pp. 1308 - 1311
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
A new strategy was attempted to fabricate photoelectrode of dye-sensitized solar cells through a reassembly technique (exfoliation and restacking) to increase solar activity. A random hybridization between exfoliated layered titanate and TiO2 (anatase) nanoparticles resulted in a 'house-of-cards' structure, which might increase the mesoporosity and surface area of TiO2 film. In the XRD patterns of the present nanocomposite, no (00 l) peaks could be seen due to the random hybridization between layered titanate and TiO2 nanosol particles. According to the N2 adsorption-desorption isotherms, the resulting nanohybrids are fairly porous with a high specific surface area (SBET=∼190 m2/g, mean pore size=6 nm), which leads to an efficient dye adsorption. A solar energy to electricity conversion efficiency (η) of the present nanocomposite film is about 100 times higher than that of TiO2 nanoparticle one under the standard AM 1.0 irradiation condition, suggesting that the mesoporous nature of TiO2 film would play an important role for efficient photovoltaic cell performance. © 2006.
DOI
10.1016/j.jpcs.2006.01.063
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
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