Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 7, Issue 12, Pages 6550-6556Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b00626
Keywords
thermoelectric; carbon nanotube; poly(3-hexylthiophene); nanocomposite; bar-coating; thin film
Funding
- KRICT Core Project [KK-1407-B6]
- R&D Convergence Program - National Research Council of Science Technology
- Center for Advanced Soft-Electronics - Ministry of Science, ICT and Future Planning as Global Frontier Project [2011-0031628]
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The influence of processing conditions, such as ink concentration and coating method, on the thermoelectric properties of SWCNT/P3HT nanocomposite films was investigated systematically. Using simple wire-bar-coating, SWCNT/P3HT nanocomposite films with high thermoelectric performance could be obtained without additional P3HT doping. The wire-bar-coated SWCNT/P3HT nanocomposite films exhibited power factors of up to 105 mu W m(-1) K-2 at room temperature. The SWCNT bundles with diameters in the range of 6-23 nm formed an interconnected network in the wire-bar-coated nanocomposite films. Network formation in these nanocomposite films was expected to be strongly related to the development of electrical pathways due to inter-SWCNT bundle connections. This study suggests that the thermoelectric performance of SWCNT/P3HT nanocomposite films could be optimized by controlling their processing conditions and morphology.
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