Issue 22, 2009
From the journal:

Journal of Materials Chemistry

Electrochemical characterization of the solvent-enhanced conductivity of poly(3,4-ethylenedioxythiophene) and its application in polymer solar cells†

Jen-Hsien Huang,a   Dhananjay Kekuda,c   Chih-Wei Chu*cd  and  Kuo-Chuan Ho*ab  

* Corresponding authors

a Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan
E-mail: kcho@ntu.edu.tw
Fax: +886-2-23623040
Tel: +886-2-23660739

b Institute of Polymer Science and Engineering, National Taiwan University, Taipei, Taiwan

c Research Center for Applied Sciences, Academia Sinica, Taipei, Taiwan
E-mail: gchu@gate.sinica.edu.tw
Fax: +886-2-27826680
Tel: +886-2-27898000 ext. 70

d Department of Photonics National Chiao Tung University, Hsinchu, Taiwan

Abstract

The influence of solvent on the electrochemical property and conductivity of PEDOT has been investigated by electrochemical and physical characterizations. The PEDOT treated with different solvents reveals a different reversibility of ionic transport and cycling stability, which is associated with the conformational rearrangement from aggregated to linear polymer chains, as evidenced from atomic force microscopy (AFM). The conductivity of the PEDOT thin film can also be enhanced while the degree of linear polymer chains is higher. The application of highly conductive PEDOT thin film as a buffer layer in the polymer photovoltaic devices was realized. A PCE of 4.27% for photovoltaic devices based on P3HT–PCBM under simulated sun light is achieved by using a PEDOT thin film treated with DMSO.

Graphical abstract: Electrochemical characterization of the solvent-enhanced conductivity of poly(3,4-ethylenedioxythiophene) and its application in polymer solar cells

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Article information

DOI
https://doi.org/10.1039/B822729B
Article type
Paper
Submitted
17 Dec 2008
Accepted
13 Mar 2009
First published
20 Apr 2009

J. Mater. Chem., 2009,19, 3704-3712

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Electrochemical characterization of the solvent-enhanced conductivity of poly(3,4-ethylenedioxythiophene) and its application in polymer solar cells

J. Huang, D. Kekuda, C. Chu and K. Ho, J. Mater. Chem., 2009, 19, 3704 DOI: 10.1039/B822729B

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