화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Applied Chemistry for Engineering, Vol.26, No.6, 640-647, December, 2015
DOI10.14478/ace.2015.1105  Export Citation
전도성 고분자의 전기전도도 향상 연구 및 이를 이용한 투명전극 응용
A Study on Improving Electrical Conductivity for Conducting Polymers and their Applications to Transparent Electrodes
임소은, 김소연, 김세열, 김선주1, 김중현†
  • 연세대학교 화공생명공학과
  • 1중앙대학교 화학신소재공학부
Soeun Im, Soyeon Kim, Seyul Kim, Felix Sunjoo Kim1, and Jung Hyun Kim†
  • Department of Chemical and Biomolecular Engineering, Yonsei University, 50, Yonsei-ro, Seodaemun-Gu, Seoul 03722, Korea
  • 1Department of Chemical Engineering and Materials Science, Chung-Ang University, 84 Heukseok-ro, Dongjak-Gu, Seoul, 06974, Korea
E-mail:
초록
투명 전극의 응용분야가 확대되고 시장의 규모가 커짐에 따라 기존 투명 전극 재료인 ITO (Indium Tin Oxide)를 대체할 차세대 투명전극의 개발에 관심이 집중되고 있다. 다양한 후보군 중에서도 대표적인 전도성 고분자인 PEDOT : PSS [poly(3,4-ethylenedioxythiophene) : poly(styrene sulfonate)]는 기계적 유연성을 갖고 있으면서도 소재와 공정 상의 가격 경쟁력이 크기 때문에 미래 소자 구현을 위한 투명전극 재료로 주목을 받고 있으며, 현재 PEDOT : PSS의 전기전도도 수준을 ITO나 금속의 수준으로 향상시키기 위해 다양한 화학적/물리적 처리를 통한 기능성 향상에 많은 연구가 진행 중이다. 본 총설에서는 전도성 고분자의 전기 전도도를 향상시키기 위한 다양한 공정 기술에 대한 연구 현황을 짚어보고자 한다. 대표적으로 유기용매, 이온성 액체, 계면활성제 등과 같은 첨가제와 박막에 대한 산 처리 공정, 물리적 인장을 통한 전기전도도 향상 연구를 들 수 있다. 또한 이러한 공정을 적용하여 전도성 고분자 투명 전극을 전자 및 에너지 소자에 응용한 사례도 간략히 소개하고자 한다.
As the need for next-generation flexible electronics grows, novel materials and technologies that can replace conventional indium tin oxide (ITO) for transparent electrodes have been of great interest. Among them, a conducting polymer, especially poly(3,4-ethylenedioxythiophene) : poly(styrene sulfonate) (PEDOT : PSS) is one of the most promising candidates because it is mechanically flexible, inexpensive, and capable of being processed in solution. Currently, there are a lot of research efforts on enhancing its electrical conductivity to the level of ITO or metal electrodes through chemical and/or physical processing. In this review article, we present various additives and pre-/post-deposition processing methods for improving the electrical conductivity of PEDOT : PSS. Some of representative reports are also introduced, which demonstrated the use of conductivity-enhanced PEDOT : PSS as transparent electrodes in electronics and energy conversion.
Keywords:conducting polymer;poly(3,4-ethylenedioxythiophene) : poly(styrene sulfonate) (PEDOT : PSS);transparent electrode
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