We have studied the morphological properties and electrochromic (EC) performance of polythiophene multilayer films on single wall carbon nanotube (SWCNT) conductive electrodes. The morphology for different numbers of layer-by-layer (LbL) bilayer on the SWCNT electrode has been characterized with atomic force microscopy and scanning electron microscope, and it was found that the LbL multilayers significantly decrease the surface roughness of the nanoporous nanotube films. The controlled surface roughness of transparent nanotube electrodes could be beneficial for their device applications. We have also fabricated EC devices with LbL films of poly[2-(3-thienyl) ethoxy-4-butylsulfonate∕poly(allylamine hydrochloride) on SWCNT electrodes, which not only have high EC contrast but also sustain higher applied voltage without showing any degradation for more than , which is not possible in the case of indium tin oxide electrodes. Cyclic voltammetry of the LbL films formed on SWCNT shows higher current at low potential, revealing the feasibility of SWCNT electrode as a good host for electrolyte ion insertion.
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1 April 2008
Research Article|
April 03 2008
Modification of single-walled carbon nanotube electrodes by layer-by-layer assembly for electrochromic devices
Vaibhav Jain;
Vaibhav Jain
a)
1Macromolecular Science and Engineering,
Virginia Tech
, Blacksburg, Virginia 24061, USA
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Henry M. Yochum;
Henry M. Yochum
2Department of Physics and Engineering,
Sweet Briar College
, Sweet Briar, Virginia 24595, USA
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Reza Montazami;
Reza Montazami
3Department of Physics,
Virginia Tech
, Blacksburg, Virginia 24061, USA
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James R. Heflin;
James R. Heflin
3Department of Physics,
Virginia Tech
, Blacksburg, Virginia 24061, USA
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Liangbing Hu;
Liangbing Hu
4Department of Physics and Astronomy,
University of California
, Los Angeles, California 90095, USA
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George Gruner
George Gruner
4Department of Physics and Astronomy,
University of California
, Los Angeles, California 90095, USA
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a)
These two authors contributed equally to this work.
b)
Electronic mail: [email protected].
J. Appl. Phys. 103, 074504 (2008)
Article history
Received:
October 10 2007
Accepted:
January 12 2008
Citation
Vaibhav Jain, Henry M. Yochum, Reza Montazami, James R. Heflin, Liangbing Hu, George Gruner; Modification of single-walled carbon nanotube electrodes by layer-by-layer assembly for electrochromic devices. J. Appl. Phys. 1 April 2008; 103 (7): 074504. https://doi.org/10.1063/1.2891256
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