Journal
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
Volume 15, Issue 2, Pages -Publisher
NATL INST MATERIALS SCIENCE
DOI: 10.1088/1468-6996/15/2/025005
Keywords
carbon nanotube; flexible transparent conducting film; flexible device material; supramolecular material
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Funding
- Low-Carbon Research Network (LCnet)
- Nanotechnology Platform Project (Molecules and Materials Synthesis) of the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan
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The fabrication of flexible transparent conducting films (TCFs) is important for the development of the next-generation flexible devices. In this study, we used double-walled carbon nanotubes (DWCNTs) as the starting material and described a fabrication method of flexible TCFs. We have determined in a quantitative way that the key factors are the length and the dispersion states of the DWCNTs as well as the weight-ratios of dispersant polymer/DWCNTs. By controlling such factors, we have readily fabricated a flexible highly transparent (94% transmittance) and conductive (surface resistivity = 320 Omega sq(-1)) DWCNT film without adding any chemical doping that is often used to reduce the surface resistivity. By applying a wet coating, we have succeeded in the fabrication of large-scale conducting transparent DWCNT films based on the role-to-role method.
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