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Issue 48, 2012
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A dual-functional Pt/CNT TCO-free counter electrode for dye-sensitized solar cell

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Abstract

A nanohybrid of platinum and carbon nanotubes (Pt/CNT) with dual functions of catalytic activity and conductivity was synthesized. The selection of the poly(oxyethylene)-backboned polyimide dispersant was essential for preparing the dispersion with the de-bundled CNTs and platinum salts in ethanol/water. Subsequent solution casting and annealing at the optimized temperature of 390 °C led to the in situ reduction of platinum salts and the formation of a thin film of Pt/CNT nanohybrids on the glass substrate. The film was used directly as the counter electrode (CE) in a dye-sensitized solar cell (DSSC), which exhibited a short-circuit current density of 16.6 ± 0.2 mA cm−2 and a power conversion efficiency of 6.96 ± 0.09% at 100 mW cm−2 illumination. This performance is comparable with a DSSC with a conventional Pt-CE, and feasible for replacing the conventional transparent conductive oxide (TCO) conductive layer in DSSCs.

Graphical abstract: A dual-functional Pt/CNT TCO-free counter electrode for dye-sensitized solar cell

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Supplementary files

Article information


Submitted
31 Jul 2012
Accepted
24 Sep 2012
First published
25 Sep 2012

J. Mater. Chem., 2012,22, 25311-25315
Article type
Paper

A dual-functional Pt/CNT TCO-free counter electrode for dye-sensitized solar cell

C. Liu, Y. Wang, R. Dong, C. Wang, K. Huang, R. Vittal, K. Ho and J. Lin, J. Mater. Chem., 2012, 22, 25311
DOI: 10.1039/C2JM35102A

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