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Electrical characteristics of heterogeneous polymer layers in PEDOT:PSS films
被引:36
作者:

Kim, Yunryeol
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Yonsei Univ, Dept Chem & Biomol Engn, 134 Shinchon Dong, Seoul 120749, South Korea Yonsei Univ, Dept Chem & Biomol Engn, 134 Shinchon Dong, Seoul 120749, South Korea

Cho, Wonseok
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Yonsei Univ, Dept Chem & Biomol Engn, 134 Shinchon Dong, Seoul 120749, South Korea Yonsei Univ, Dept Chem & Biomol Engn, 134 Shinchon Dong, Seoul 120749, South Korea

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Cho, Hangyeol
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Yonsei Univ, Dept Chem & Biomol Engn, 134 Shinchon Dong, Seoul 120749, South Korea Yonsei Univ, Dept Chem & Biomol Engn, 134 Shinchon Dong, Seoul 120749, South Korea

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[1] Yonsei Univ, Dept Chem & Biomol Engn, 134 Shinchon Dong, Seoul 120749, South Korea
基金:
新加坡国家研究基金会;
关键词:
ORGANIC SOLAR-CELLS;
WORK-FUNCTION;
THERMOELECTRIC PROPERTIES;
NEXT-GENERATION;
PEDOT/PSS FILMS;
HYBRID FILMS;
TRANSPARENT;
CONDUCTIVITY;
EFFICIENT;
ELECTRODE;
D O I:
10.1039/c8tc02598c
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
(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 nextgeneration 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.
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页码:8906 / 8913
页数:8
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