Nanosized anatase TiO2 single crystals with tunable exposed (001) facets for enhanced energy conversion efficiency of dye-sensitized solar cells

Xia Wu; Zhigang Chen; Gao Qing Lu; Lianzhou Wang

doi:10.1002/adfm.201100828

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Nanosized anatase TiO2 single crystals with tunable exposed (001) facets for enhanced energy conversion efficiency of dye-sensitized solar cells

Journal article

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Nanosized anatase TiO2 single crystals with tunable exposed (001) facets for enhanced energy conversion efficiency of dye-sensitized solar cells

Xia Wu, Zhigang Chen, Gao Qing Lu and Lianzhou Wang

Advanced Functional Materials, Vol.21(21), pp.4167-4172

2011

DOI: https://doi.org/10.1002/adfm.201100828

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Abstract

nanosized TiO2 single crystals

(001) facets

dye-sensitised solar cells

conversion efficiency

This paper reports the synthesis of nanosized TiO2 single crystals with different percentages of exposed (001) facets in the presence of HF solution. Various characterizations are conducted to understand the correlation between particle morphology, exposed (001) facets and photo-conversion efficiency of the nanosized anatase TiO2 single crystals. An enhancement in dye-sensitized solar cells (DSSCs) overall conversion efficiency is observed for the photoanode consisting of nanosized TiO2 single crystals with higher percentage of exposed (001) facets, increasing from 7.47%, 8.14% to 8.49% for the TiO2 single crystals with ca. 10%, 38%, and 80% percentage of exposed (001) facets. Experimentally confirmed by dark current potential and open-circuit voltage decay scans, such highly exposed (001) facets are not only favorable for more dye adsorption but also effectively retard the charge recombination process in DSSCs.

Details

Title: Nanosized anatase TiO2 single crystals with tunable exposed (001) facets for enhanced energy conversion efficiency of dye-sensitized solar cells
Authors: Xia Wu (Author) - University of Queensland
Zhigang Chen (Author) - University of Queensland
Gao Qing Lu (Author) - University of Queensland
Lianzhou Wang (Author) - University of Queensland
Publication details: Advanced Functional Materials, Vol.21(21), pp.4167-4172
Publisher: Wiley - V C H Verlag GmbH & Co. KGaA
Date published: 2011
DOI: 10.1002/adfm.201100828
ISSN: 1616-301X
Organisation Unit: University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99448817902621
Output Type: Journal article

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Web Of Science research areas: Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary; Nanoscience & Nanotechnology; Physics, Applied; Physics, Condensed Matter

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