Inkjet Printing of Single Wall Carbon Nanotubes for Transparent Conductive Films

  • Song, Jin-Won (Nanomechanical System Research Center, Korea Institute of Machinery & Materials) ;
  • Yoon, Yeo-Hwan (Nanomechanical System Research Center, Korea Institute of Machinery & Materials) ;
  • Kim, Joon-Dong (Nanomechanical System Research Center, Korea Institute of Machinery & Materials) ;
  • Lee, Eung-Sug (Nanomechanical System Research Center, Korea Institute of Machinery & Materials) ;
  • Choi, Byung-Sam (Dept. of Molecular Science and Technology, Ajou University) ;
  • Kim, Jae-Ho (Dept. of Molecular Science and Technology, Ajou University) ;
  • Han, Chang-Soo (Nanomechanical System Research Center, Korea Institute of Machinery & Materials)
  • Published : 2007.08.27

Abstract

A single-wall carbon nanotube (SWNT) transparent conductive film (TCF) was fabricated using a simple inkjet printing method. The TCF could be selectively patterned by controlling the dot size to diameters as small as $34\;{\mu}m$. In this repeatable and scalable process, we achieved 71% film transmittance and a resistance of 900 ohm/sq sheet with an excellent uniformity, about ${\pm}\;5%$ deviation overall. Inkjet printing of SWNT is substrate friendly and the TCF is printed on a flexible substrate. This method of fabrication using direct printing permits mass production of TCF in a large area process, reducing processing steps and yielding low-cost TCF fabrications on a designated area using simple printing.

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