Electrical Properties and Conductivity Mapping of Thin Multilayered Films Containing Different Types of Carbon Nanotubes

Authors
Park, Hye JinOh, Kyoung AhPark, MinLee, Hyunjung
Issue Date
2009-07-30
Publisher
American Chemical Society
Citation
The Journal of Physical Chemistry C, v.113, no.30, pp.13070 - 13076
Abstract
This study compared the electrical conductivities of transparent films containing carbon nanotubes with different wall numbers (single-wall nanotubes (SWNTs), thin-wall nanotubes (TWNTs), and multiwall nanotubes (MWNTs)). A layer-by-layer fabrication method was chosen to achieve fine control over film transparency. This produced homogeneously dispersed carbon nanotube-polymer composite films over the whole sample area because the method prevents the self-aggregation of carbon nanotubes. Electrical conductivity measurements using the four-probe method showed that TWNTs formed better electrically conductive films than SWNTs and MWNTs. Conductive atomic force microscopy revealed that the distribution of conductive channels depends on the morphology of the nanotubes with different wall numbers in the composite. The close-packed networks of TWNTs in the composite film provided the most effective conductive channels after thermal annealing at 300 degrees C.
Keywords
SOLAR-CELLS; TRANSPARENT; COMPOSITES; POLYMER; FABRICATION; PERCOLATION; DEPOSITION; FIBERS; TIO2; SOLAR-CELLS; TRANSPARENT; COMPOSITES; POLYMER; FABRICATION; PERCOLATION; DEPOSITION; FIBERS; TIO2; 투명전극; CNT
ISSN
1932-7447
URI
https://pubs.kist.re.kr/handle/201004/132297
DOI
10.1021/jp901684k
Appears in Collections:
KIST Article > 2009
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