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We report floating catalyst chemical vapor deposition synthesis of
single-walled carbon nanotubes (SWCNTs) for high performance transparent
conducting films (TCFs) using low feeding rate of precursor solution.
Herein, ethanol acts as carbon source, ferrocene and thiophene as catalyst
precursor and growth promoter, respectively. By adopting a low feeding
rate of 4 μl/min, the fabricated TCFs present one of the lowest sheet
resistances of ca. 78 ohm/sq. at 90% transmittance. Optical
characterizations demonstrate that the mean diameter of high quality
SWCNTs is up to 2 nm. Additionally, electron microcopy observations
provide the evidences that the mean length of SWCNT bundles is as long as
28.4 μm while the mean bundle diameter is only 5.3 nm. Moreover, very few
CNT loops can be found in the film. Remarkably, the fraction of individual
SWCNTs climbs up to 24.6%. All those morphology data account for the
superior optoelectronic performance of our SWCNT TCFs.
223 views reported since publication in 2018.