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Issue 14, 2013
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Facile and effective synthesis of hierarchical TiO2 spheres for efficient dye-sensitized solar cells

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Abstract

Three-dimensional (3D) crystalline anatase TiO2 hierarchical spheres were successfully derived from Ti foils via a fast, template-free, low-temperature hydrothermal route followed by a calcination post-treatment. These dandelion-like TiO2 spheres are composed of numerous ultrathin nanoribbons, which were subsequently split into fragile nanoflakes as a result of the decomposition of Ti-complex intermediates to TiO2 and H2O at high temperature. The dye-sensitized solar cells (DSSCs) employing such hierarchically structured TiO2 spheres as the photoanodes exhibited a light-to-electricity conversion efficiency of 8.50%, yielding a 28% enhancement in comparison with that (6.64%) of P25-based DSSCs, which mainly benefited from the enhanced capacity of dye loading in combination with effective light scattering and trapping from hierarchical architecture.

Graphical abstract: Facile and effective synthesis of hierarchical TiO2 spheres for efficient dye-sensitized solar cells

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Publication details

The article was received on 01 Apr 2013, accepted on 10 May 2013 and first published on 15 May 2013


Article type: Paper
DOI: 10.1039/C3NR01604H
Citation: Nanoscale, 2013,5, 6577-6583
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    Facile and effective synthesis of hierarchical TiO2 spheres for efficient dye-sensitized solar cells

    M. Ye, C. Chen, M. Lv, D. Zheng, W. Guo and C. Lin, Nanoscale, 2013, 5, 6577
    DOI: 10.1039/C3NR01604H

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