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离子液体诱导的薄薄PEDOT:PSS片的依赖湿度的导电性的反转:PSS片

Anna Lena Oechsle¹, Tobias Schöner¹, Lewin Deville¹

¹TUM School of Natural Science, Department of Physics, Chair for Functional Materials, Technical University of Munich, James Franck-Str. 1, 85748 Garching, Germany.

ACS applied materials & interfaces

|September 27, 2023

概括

用乙基-3-甲基二胺 (EMIM DCA) 处理后的聚3,4-乙烯二氧化:聚乙烯硫酸盐 (PEDOT:PSS) 薄膜提高了它们的耐湿性. 这种处理增强了电子和离子传输特性,这对于稳定的设备性能至关重要.

科学领域:

材料科学材料科学材料科学
聚合物电子技术聚合物电子技术
导电聚合物导电聚合物

背景情况:

聚3,4-乙烯二氧化硫:聚styrenesulfonate (PEDOT:PSS) 是一种广泛使用的导电聚合物.
它的电子特性对环境条件如湿度敏感.
了解和减轻湿度的影响对于设备的稳定性至关重要.

研究的目的:

为了研究湿度对后处理PEDOT:PSS薄膜的抗性的影响.
评估乙基-3-甲基利米达二胺 (EMIM DCA) 后处理对PEDOT:PSS属性的影响.
阐明湿度引起的阻力变化背后的机制.

主要方法:

薄膜制备的PEDOT:PSS.
治疗后使用不同度的EMIM DCA.
控制湿度暴露和阻力测量.
在现场放牧发生小角度X射线散射 (GISAXS) 用于形态分析.
电化学阻抗光谱 (EIS) 用于电荷载体分析.

主要成果:

未经处理的PEDOT:PSS在较高的湿度下表现出较高的抗性.
经过EMIM DCA后处理的样本在较高湿度下表现出较低的抗性.
GISAXS揭示了影响洞运输的PEDOT域间距的湿度诱导的变化.
伊斯证实了离子电荷载体在经过处理的薄膜中的贡献.

结论:

在EMIM DCA的后处理过程中,PEDOT:PSS薄膜的湿度反应发生了显著的变化.
该研究提出了一个受湿度影响的孔和阴离子运输模型.
这项研究为开发更稳定的有机电子材料提供了洞察力.

关键词:

在PEDOT:PSSS中使用.湿度的影响湿度的影响在现场 GISAXS.离子液体是一种离子液体.热电热电的电力.

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