Porous Titania Nanosheet/Nanoparticle Hybrids as Photoanodes for Dye-Sensitized Solar Cells

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Australian Research Council (ARC) Centre of Excellence for Functional Nanomaterials, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland 4072 Australia
Institute of Superconducting and Elctronic Materials, Australian Institute of Innovative Materials, The University of Wollongong, Northwollongong, New South Wales 2500, Australia
§ ARC Centre of Excellence for Functional Nanomaterials, School of Chemical Engineering, The University of New South Wales, Sydney, New South Wales 2052, Australia
Cite this: ACS Appl. Mater. Interfaces 2013, 5, 22, 12058–12065
Publication Date (Web):October 25, 2013
Copyright © 2013 American Chemical Society
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Porous titania nanohybrids (NHs) were successfully prepared by hybridizing the exfoliated titania nanosheets with anatase TiO2 nanoparticles. Various characterizations revealed that the titania NHs as photoanodes play a trifunctional role (light harvesting, dye adsorption, and electron transfer) in improving the efficiency (η) of the dye-sensitized solar cells. The optimized photoanode consisting layered NHs demonstrated a high overall conversion efficiency of 10.1%, remarkably enhanced by 29.5% compared to that (7.8%) obtained from the benchmark P25 nanoparticles under the same testing conditions.

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Schematic diagram for an exfoliation–hybridization route to prepare layered titania NHs, TEM images, Raman spectra, corresponding photographs of NP, P25, and NH films after dye adsorption, IPCE of DSSCs, and JV curves. This material is available free of charge via the Internet at

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