Transparent electrodes made from carbon nanotube polyelectrolytes and application to acidic environments

Carbon nanotube (CNT)-based transparent conducting films (TCFs) have been prepared by filtration of (i) surfactant-based aqueous dispersions and (ii) organic solutions obtained by reductive dissolution of an alkali metal salt of polyelectrolyte nanotubes. Starting from the same source of nanotubes,...

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Bibliographic Details
Published in:Journal of materials research 2015-07, Vol.30 (13), p.2009-2017
Main Authors: Catheline, Amélie, Paolucci, Francesco, Valenti, Giovanni, Poulin, Philippe, Pénicaud, Alain
Format: Article
Language:English
Subjects:
Analysis
Applied and Technical Physics
Biomaterials
Carbon
Carbon nanotubes
Chemical Sciences
Chemical vapor deposition
Dispersions
Dissolution
Electrodes
Electrons
Indium tin oxide
Inorganic Chemistry
Invited Feature Paper
Material chemistry
Materials Engineering
Materials research
Materials Science
Methods
Nanotechnology
Nanotubes
Polyelectrolytes
Potassium
Solutions
Solvents
Static electricity
Studies
Surfactants
Transmittance
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Summary:Carbon nanotube (CNT)-based transparent conducting films (TCFs) have been prepared by filtration of (i) surfactant-based aqueous dispersions and (ii) organic solutions obtained by reductive dissolution of an alkali metal salt of polyelectrolyte nanotubes. Starting from the same source of nanotubes, it is shown that films obtained by the reductive dissolution route present up to one order of magnitude better conductivity for the same transmittance. Light scattering experiments show that the average CNT length is much larger for the reductive dissolution-based organic solutions than for the sonication aided aqueous dispersions. Values of surface resistivity of 200 ohm per square have been obtained for 80% transmittance. Additionally, it is shown that the CNT-based TCFs are undistinguishable from indium tin oxide (ITO) as electrodes in regular environments, whereas they perform efficiently in acidic environments where ITO fails.
ISSN:0884-2914
2044-5326
DOI:10.1557/jmr.2015.166