Enhancing the performance of dye-sensitized solar cells by benzoic acid modified TiO2 nanorod electrode

Jincheng Liu, Yinjie Wang and Darren Sun

Renewable Energy, 2012, vol. 38, issue 1, 214-218

Abstract: The anatase TiO2 nanorods capped by oleic acid with the length of 30–50 nm and diameter of approximately 4–5 nm were prepared by a facile two-phase hydrothermal method. The oleic acid ligands attached on the surface of TiO2 nanorods were completely exchanged by benzoic acid ligands. The dye-sensitized solar cell (DSSC) fabricated based on the benzoic acid modified TiO2 nanorod electrodes exhibited a higher power conversion efficiency of 6.37% than that (5.1%) of the P25 TiO2 based DSSC. The surface modification by benzoic acid can effectively improve the hydrophility of TiO2 nanorods, leading to an increased short circuit current density and a higher open circuit voltage. This study provided a facile alternative method to fabricate highly efficient TiO2 nanorod-based electrodes for DSSCs.

Keywords: TiO2; Nanorods; Ligand exchange; Dye-sensitized solar cells (search for similar items in EconPapers)
Date: 2012
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:38:y:2012:i:1:p:214-218

DOI: 10.1016/j.renene.2011.07.028

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