Improvement of Transparent Electrodes Based on Carbon Nanotubes Via Corona Treatment on Substrate Surface

기판의 코로나 표면처리에 의한 탄소 나노튜브 투명전극의 물성 향상

  • Han, Sang-Hoon (Department of Electronic Systems Engineering, Hanyang University (ERICA)) ;
  • Kim, Bu-Jong (Department of Electronic Systems Engineering, Hanyang University (ERICA)) ;
  • Park, Jin-Seok (Department of Electronic Systems Engineering, Hanyang University (ERICA))
  • 한상훈 (한양대학교(ERICA) 전자시스템공학과) ;
  • 김부종 (한양대학교(ERICA) 전자시스템공학과) ;
  • 박진석 (한양대학교(ERICA) 전자시스템공학과)
  • Received : 2014.01.02
  • Accepted : 2014.02.28
  • Published : 2014.03.31

Abstract

In this study, we investigate the effects of corona-discharge pre-treatment on the properties of carbon nanotubes (CNTs) which are used as flexible transparent electrodes. The CNTs are deposited on PET (polyethylene terephthalate) substrates using a spray coating method. Prior to the deposition of CNTs, the PET substrates are corona-treated by varying the feeding directions of the PET substrate and the numbers of treatments. The variations in the surface morphologies and roughnesses of the PET substrates due to corona-treatment are characterized via atomic force microscopy (AFM). Dynamic contact angles (DCAs) of the corona-treated PET substrates are measured and analyzed as functions of the treatment conditions. Also, the sheet resistances and visible-range transmittances of the CNTs deposited on PET substrates are measured before and after bending test. The experimental results obtained in this study provide strong evidences that the adhesive forces between CNTs and PET substrates can be substantially enhanced by corona-discharge pretreatment.

Keywords

Acknowledgement

Supported by : 한국연구재단

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