Journal of Integrative Natural Science (통합자연과학논문집)

The Basic Science Institute Chosun University (조선대학교 기초과학연구원)
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Development of Highly Conductive Poly(3,4-ethylenedioxythiophene) Thin Film using High Quality 3-Aminopropyltriethoxysilane Self-Assembled Monolayer

고품질 3-Aminopropyltriethoxysilane 자기조립단분자막을 이용한 고전도도 Poly(3,4-ethylenedioxythiophene) 전극박막의 개발

  • Choi, Sangil (Department of Nano-Polymer Materials Engineering, Pai Chai University) ;
  • Kim, Wondae (Department of Nano-Polymer Materials Engineering, Pai Chai University) ;
  • Kim, Sungsoo (Department of Nano-Polymer Materials Engineering, Pai Chai University)
  • 최상일 (배재대학교 나노고분자재료공학과) ;
  • 김원대 (배재대학교 나노고분자재료공학과) ;
  • 김성수 (배재대학교 나노고분자재료공학과)
  • Received : 2011.11.25
  • Accepted : 2011.12.22
  • Published : 2011.12.30
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Abstract

Quality of PEDOT electrode thin film vapor phase-polymerized on 3-aminopropyltriethoxysilane (APS) self-assembled monolayer (SAM) is very crucial for making an ohmic contact between electrode and semiconductor layer of an organic transistor. In order to improve the quality of PEDOT film, the quality of APS-SAM laying underneath the film must be in the best condition. In this study, in order to improve the quality of APS-SAM, the monolayer was self-assembled on $SiO_2$ surface by a dip-coating method under strictly controlled relative humidity (< 18%RH). The quality of APS-SAM and PEDOT thin film were investigated with a contact angle analyzer, AFM, FE-SEM, and four-point probe. The investigation showed that a PEDOT film grown on the humidity-controlled SAM is very smooth and compact (sheet resistivity = 20.2 Ohm/sq) while a film grown under the uncontrolled condition is nearly amorphous and contains quite many pores (sheet resistivity = 200 Ohm/sq). Therefore, this study clearly proves that a highly improved quality of APSSAM can offer a highly conductive PEDOT electrode thin film on it.

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References

  1. J. C. Scott, S. A. Carter, S. Karg, and M. Angelopoulos, "Polymeric anodes for organic light-emitting diodes", Synth. Metals., Vol. 85, pp. 1197-1200, 1997. https://doi.org/10.1016/S0379-6779(97)80207-X
  2. I. Pang, S. Kim, and J. Lee, "Di-andtri-aminosilane SAM-assisted patterning of highly pure poly(3,4- ethylenedioxythiophene) nanofilmsrobustly adhered to silicon oxide substrate", Surface & Coatings Technology, Vol. 201, pp. 9426-9431, 2007. https://doi.org/10.1016/j.surfcoat.2007.04.060
  3. S. Kim, I. Pang, and J. Lee, "Aminosilane SAMAssisted Patterning of Poly(3,4-ethylenedioxythiophene) Nanofilm Robustly Adhered to SiO2 Substrate", Macromolecular Rapid Communications, vol. 28, pp. 1574-1580, 2010.
  4. A. John, Howater, P. Jeffrey, and Youngblood, "Optimization of Silica Silanization by 3-Aminopropyltriethoxysilane", Langmuir, Vol. 22, pp. 11142- 11147, 2006. https://doi.org/10.1021/la061240g