Journal
ACS NANO
Volume 8, Issue 4, Pages 3285-3293Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn4041975
Keywords
carbon nanotube; micropatterning; transparent conductive film; touch sensor; flexible
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Funding
- Advanced Low Carbon Technology Research and Development Program (ALCA)
- Japan Science and Technology Agency
- Japan Society for the Promotion of Science
- Grants-in-Aid for Scientific Research [25107002, 26107521, 25000011, 24681030] Funding Source: KAKEN
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We propose a technique for one-step micropatterning of as-grown carbon-nanotube films on a plastic substrate with sub-10 mu m resolution on the basis of the dry transfer process. By utilizing this technique, we demonstrated the novel high-performance flexible carbon-nanotube transparent conductive film with a microgrid structure, which enabled improvement of the performance over the trade-off between the sheet resistance and transmittance of a conventional uniform carbon-nanotube film. The sheet resistance was reduced by 46% at its maximum by adding the microgrid, leading to a value of 53 Omega/sq at a transmittance of 80%. We also demonstrated easy fabrication of multitouch projected capacitive sensors with 12 x 12 electrodes. The technique is quite promising for energy-saving production of transparent conductor devices with 100% material utilization.
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