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Electrical characteristics of heterogeneous polymer layers in PEDOT:PSS films
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2018-07-18 00:00:00 , DOI: 10.1039/c8tc02598c
Yunryeol Kim 1, 2, 3, 4 , Wonseok Cho 1, 2, 3, 4 , Youngno Kim 1, 2, 3, 4 , Hangyeol Cho 1, 2, 3, 4 , Jung Hyun Kim 1, 2, 3, 4
Affiliation  

(3,4-Ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), a representative conducting polymer, is environment-friendly and offers easy processing and flexibility owing to its hydro-dispersive properties. In this study, we investigated the electrical properties of PEDOT:PSS films with H2SO4/DMSO post-treatment. PEDOT:PSS is an electrolyte complex that has been attracting attention as a next-generation transparent electrode. The PEDOT:PSS films are composed of two heterogeneous phases: a PSS-rich layer and a PEDOT-rich layer. The PSS-rich layer is observed to be a homogeneous phase that does not influence the electrical properties. Thus, the PSS-rich layer, which occupies a large area of the PEDOT:PSS films, was removed to obtain films having high electrical properties. Both the layers exhibit a homogeneous phase regardless of their electrical properties. In particular, the PSS-rich layer without the PEDOT chains does not affect the electrical properties, since it does not contribute to hole transport. The heterogeneity of the PEDOT:PSS films with good electrical properties has been revealed by eliminating the unnecessary PSS-rich layers. The highest electrical conductivity obtained was 2239 S cm−1, which is about 4.1 times higher than that of the pristine PEDOT:PSS films, for the films involving 15 M H2SO4/DMSO post-treatment.

中文翻译:

PEDOT:PSS薄膜中异质聚合物层的电学特性

(3,4-Ethylenedioxythiophene):poly(苯乙烯磺酸盐)(PEDOT:PSS)是一种代表性的导电聚合物,由于其水分散性,因此对环境友好且易于加工且具有柔韧性。在这项研究中,我们研究了具有H 2 SO 4的PEDOT:PSS薄膜的电性能/ DMSO后处理。PEDOT:PSS是一种电解质复合物,已作为下一代透明电极受到关注。PEDOT:PSS薄膜由两个异相组成:富PSS层和富PEDOT层。观察到富含PSS的层是不影响电性能的均匀相。因此,去除了占据大面积的PEDOT:PSS膜的富含PSS的层,从而获得了具有高电性能的膜。不论它们的电性能如何,这两个层均表现出均相。尤其是,没有PEDOT链的富含PSS的层不会影响电性能,因为它不会有助于空穴传输。PEDOT的异质性:通过消除不必要的富含PSS的层,已揭示出具有良好电性能的PSS膜。获得的最高电导率是2239 S cm对于涉及15 MH 2 SO 4 / DMSO后处理的膜, -1,比原始的PEDOT:PSS膜高-1倍。
更新日期:2018-07-18
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