Issue 6, 2010
From the journal:

Journal of Materials Chemistry

Transparent electrodes of ordered opened-end TiO2-nanotube arrays for highly efficient dye-sensitized solar cells

Chin-Jung Lin,ab   Wen-Yueh Yuab  and  Shu-Hua Chien*ab  

* Corresponding authors

a Institute of Chemistry, Academia Sinica., Taipei

b Department of Chemistry, National Taiwan University, Taipei, Taiwan
E-mail: chiensh@gate.sinica.edu.tw

Abstract

We introduce a version of a dye-sensitized solar cell (DSSC), in which the transparent electrode comprises an opened-end TiO2-nanotube (TiNT) film oriented perpendicular to the fluorine-doped tin oxide (FTO) conductive glass. This electrode is fabricated using a facile process involving flaking the anodic TiNT film off the Ti-metal substrate to open its closed bottom and strongly adhering it onto FTO glass by a nanocrystalline TiO2 (NP-TiO2) thin underlayer. Apart from the enhanced light-harvesting and electron-collecting efficiencies, the use of opened-end TiNT film allows the redox electrolyte (iodide, Iāˆ’ and triiodide, I3āˆ’) easy access to the NP-TiO2 underlayer. As compared to the closed-end TiNT-based DSSC, the opened-end TiNT-based device exhibited an increase in one-sun efficiency from 5.3% to 9.1%, corresponding to 70% enhancement.

Graphical abstract: Transparent electrodes of ordered opened-end TiO2-nanotube arrays for highly efficient dye-sensitized solar cells

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Article information

DOI
https://doi.org/10.1039/B917886D
Article type
Paper
Submitted
01 Sep 2009
Accepted
09 Nov 2009
First published
15 Dec 2009

J. Mater. Chem., 2010,20, 1073-1077

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Transparent electrodes of ordered opened-end TiO2-nanotube arrays for highly efficient dye-sensitized solar cells

C. Lin, W. Yu and S. Chien, J. Mater. Chem., 2010, 20, 1073 DOI: 10.1039/B917886D

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