使用二甲基亚砜添加剂同时增强聚（3,4-乙撑二氧噻吩）：聚苯乙烯磺酸盐导电聚合物薄膜的内聚力和导电性
Simultaneously Enhancing the Cohesion and Electrical Conductivity of PEDOT:PSS Conductive Polymer Films using DMSO Additives.
作者信息
Lee Inhwa, Kim Gun Woo, Yang Minyang, Kim Taek-Soo
机构信息
Department of Mechanical Engineering, ‡KI for the NanoCentury, KAIST , Daejeon, 305-701, Korea.
出版信息
ACS Appl Mater Interfaces. 2016 Jan 13;8(1):302-10. doi: 10.1021/acsami.5b08753. Epub 2015 Dec 23.
UNLABELLED
Conductive polymer poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (
PEDOT
PSS) has attracted significant attention as a hole transport and electrode layer that substitutes metal electrodes in flexible organic devices. However, its weak cohesion critically limits the reliable integration of
PEDOT
PSS in flexible electronics, which highlights the importance of further investigation of the cohesion of
PEDOT
PSS. Furthermore, the electrical conductivity of
PEDOT
PSS is insufficient for high current-carrying devices such as organic photovoltaics (OPVs) and organic light emitting diodes (OLEDs). In this study, we improve the cohesion and electrical conductivity through adding dimethyl sulfoxide (DMSO), and we demonstrate the significant changes in the properties that are dependent on the wt % of DMSO. In particular, with the addition of 3 wt % DMSO, the maximum enhancements for cohesion and electrical conductivity are observed where the values increase by 470% and 6050%, respectively, due to the inter-PEDOT bridging mechanism. Furthermore, when OLED devices using the
PEDOT
PSS films are fabricated using the 3 wt % DMSO, the display exhibits 18% increased current efficiency.
未标注
导电聚合物聚（3,4 - 乙撑二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）作为一种空穴传输层和电极层，可替代柔性有机器件中的金属电极，已引起广泛关注。然而，其较弱的内聚力严重限制了PEDOT：PSS在柔性电子器件中的可靠集成，这凸显了进一步研究PEDOT：PSS内聚力的重要性。此外，PEDOT：PSS的电导率对于诸如有机光伏（OPV）和有机发光二极管（OLED）等高载流器件而言是不足的。在本研究中，我们通过添加二甲基亚砜（DMSO）来提高内聚力和电导率，并证明了这些性能的显著变化取决于DMSO的重量百分比。特别是，添加3 wt％的DMSO时，由于PEDOT之间的桥接机制，内聚力和电导率分别提高了470％和6050％，达到最大值。此外，当使用含3 wt％DMSO的PEDOT：PSS薄膜制造OLED器件时，显示器的电流效率提高了18％。
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