Fabrication and evaluation of adhesion enhanced flexible carbon nanotube transparent conducting films

Yan Wang, Hai-Jie Yang, Hong-Zhang Geng*, Ze-Chen Zhang, Er-Xiong Ding, Yan Meng, Zhi-Jia Luo, Jing Wang, Xiao-Mei Su, Shi-Xun Da

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Single-walled carbon nanotubes (SWCNTs) were dispersed in water with the help of a combination of surfactants to achieve a high concentration SWCNT ink. Transparent conducting films (TCFs) were fabricated through a rod-coating method using the SWCNT ink. The addition of binders (polyacrylic acid or carboxymethyl cellulose) greatly enhanced the adhesion of SWCNT films to substrates and the cohesion between CNTs, which produced a uniform film of SWCNTs by preventing damage during the post-treatment process. The thickness of SWCNT films is controlled by the amount of SWCNTs in the solution and the diameter of the wire used. To test the film adhesion, Scotcht(TM) tape was used to detach some loosely bound SWCNTs. Then the SWCNT films were further post-treated with nitric acid to improve the conductivity. The addition of polyacrylic acid to the SWCNT dispersion improved the film adhesion obviously without decreasing its electrical conductivity. This rod-coating method demonstrates great potential for the scalable fabrication of flexible SWCNT-TCFs.

Original languageEnglish
Pages (from-to)3796-3802
Number of pages7
JournalJournal of Materials Chemistry C
Volume3
Issue number15
DOIs
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

Keywords

  • THIN-FILMS
  • SCALABLE FABRICATION
  • SOLAR-CELLS
  • PERFORMANCE
  • DISPERSANT
  • ELECTRODES
  • DEPOSITION
  • NETWORKS
  • ACID

Cite this