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Performance-determining factors in flexible transparent conducting single-wall carbon nanotube film

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2013, 14(4), pp.255-258
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General

송영일 1 이정우 1 김태유 2 정환정 3 Yong Chae Jung ORD ID 3 Su-Jeong Suh 1 Cheol-Min Yang 3

1성균관대학교
2성균관대학교 신소재공학과
3한국과학기술연구원

Accredited

ABSTRACT

Flexible transparent conducting films (TCFs) were fabricated by dip-coating single-wall carbon nanotubes (SWCNTs) onto a flexible polyethylene terephthalate (PET) film. The amount of coated SWCNTs was controlled simply by dipping number. Because the performance of SWCNT-based TCFs is influenced by both electrical conductance and optical transmittance,we evaluated the film performance by introducing a film property factor using both the number of interconnected SWCNT bundles at intersection points, and the coverage of SWCNTs on the PET substrate, in field emission scanning electron microscopic images. The microscopic film property factor was in an excellent agreement with the macroscopic one determined from electrical conductance and optical transmittance measurements, especially for a small number of dippings. Therefore, the most crucial factor governing the performance of the SWCNT-based TCFs is a SWCNT-network structure with a large number of intersection points for a minimum amount of deposited SWCNTs.

Citation status

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