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

Research output: Contribution to journalArticleScientificpeer-review

Researchers

Research units

  • Aalto University

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.

Details

Original languageEnglish
Article number180392
Pages (from-to)1-8
JournalRoyal Society Open Science
Volume5
Issue number6
Publication statusPublished - 18 Jun 2018
MoE publication typeA1 Journal article-refereed

    Research areas

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

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