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Issue 24, 2013
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Size-tunable TiO2 nanorod microspheres synthesised via a one-pot solvothermal method and used as the scattering layer for dye-sensitized solar cells

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Abstract

TiO2 microspheres assembled by single crystalline rutile TiO2 nanorods were synthesized by one-pot solvothermal treatment at 180 °C based on an aqueous–organic mixture solution containing n-hexane, distilled water, titanium n-butoxide and hydrochloric acid. The spheres had a radiative structure from the center, and their diameters were controlled in the range from 1 to 5 μm by adjusting the volume of the reactant water. Nitrogen adsorption–desorption isotherms showed that all the as-prepared microspheres had relatively high specific surface areas of about 50 m2 g−1. The 1 μm sized TiO2 nanorod microspheres were fabricated as a scattering overlayer in DSSCs, leading to a remarkable improvement in the power conversion efficiency: 8.22% of the bi-layer DSSCs versus 7.00% for the reference cell made of a single-layer film prepared from nanocrystalline TiO2. Such improvement was mainly attributed to the enhanced light harvesting and dye loading brought by the effective scattering centers.

Graphical abstract: Size-tunable TiO2 nanorod microspheres synthesised via a one-pot solvothermal method and used as the scattering layer for dye-sensitized solar cells

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Publication details

The article was received on 22 Aug 2013, accepted on 26 Sep 2013 and first published on 30 Sep 2013


Article type: Paper
DOI: 10.1039/C3NR04462A
Citation: Nanoscale, 2013,5, 12574-12581
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    Size-tunable TiO2 nanorod microspheres synthesised via a one-pot solvothermal method and used as the scattering layer for dye-sensitized solar cells

    Y. Rui, Y. Li, Q. Zhang and H. Wang, Nanoscale, 2013, 5, 12574
    DOI: 10.1039/C3NR04462A

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