High-performance single-walled carbon nanotube transparent conducting film fabricated by using low feeding rate of ethanol solution

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openAccess

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Volume Title

A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Date

2018-06-18

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Language

en

Pages

1-8

Series

Royal Society Open Science, Volume 5, issue 6

Abstract

We report floating catalyst chemical vapour 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-1, the fabricated TCFs present one of the lowest sheet resistances of ca 78Ωsq.-1. at 90% transmittance. Optical characterizations demonstrate that the mean diameter of high-quality SWCNTs is up to 2 nm. Additionally, electron microcopy observations provide evidence 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 reaches 24.6%. All those morphology data account for the superior optoelectronic performance of our SWCNT TCFs.

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Keywords

Ethanol, Floating catalyst chemical vapour deposition, Single-walled carbon nanotubes, Transparent conducting films

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Citation

Ding, E X, Zhang, Q, Wei, N, Khan, A T & Kauppinen, E I 2018, ' High-performance single-walled carbon nanotube transparent conducting film fabricated by using low feeding rate of ethanol solution ', Royal Society Open Science, vol. 5, no. 6, 180392, pp. 1-8 . https://doi.org/10.1098/rsos.180392