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학술지 Enhanced Electrical Properties of PEDOT:PSS Films using Solvent Treatment and its Application to ITO-free Organic Light-emitting Diodes
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저자
서윤경, 주철웅*, 이종희*, 한주원, 이동진, Siti Aisyah Nurmaulia Entifar, 김서균, 조남성, 김용현
발행일
201707
출처
Journal of Luminescence, v.187, pp.221-226
ISSN
0022-2313
출판사
Elsevier
DOI
https://dx.doi.org/10.1016/j.jlumin.2017.03.002
협약과제
16PB1800, AMOLED TV용 soluble TFT 및 화소 형성 소재/공정 기술 개발, 이종희
초록
Highly conductive poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) films are prepared by introducing a new solvent 2-ethoxyethanol and are optimized by acid-free solvent post treatment. The behavior of samples are investigated with various coating conditions. The change of electrical performance for 2-ethoxyethanol added PEDOT:PSS films with various post treatment methods is studied. Upon post treatment, the sheet resistance greatly decreases attributed to a structural change with removal of insulating PSS in the film. Based on these conductive films, we demonstrate efficient ITO-free green phosphorescent organic light-emitting diodes (OLEDs). The efficiency of OLEDs with post-treated PEDOT:PSS electrodes is greater than that of OLEDs with untreated PEDOT:PSS electrodes. The results illustrate a promising future for flexible, low-cost, ITO-free OLEDs employing PEDOT:PSS electrodes optimized by 2-ethoxyethaol with acid-free solvent post treatment.
키워드
2-ethoxyethanol, Conductive polymers, Organic light-emitting diodes, PEDOT:PSS, Transparent electrodes
KSP 제안 키워드
2-ethoxyethanol, 4-Ethylenedioxythiophene(EDOT), 4-ethylenedioxythiophene):poly(4-styrenesulfonate)(PEDOT:PSS), Conductive film, Free solvent, ITO-free, Low-cost, Organic light-emitting diodes(OLEDS), Post-treatment, Solvent treatment, Structural changes