Improvement of the Optoelectrical Properties of a Transparent Conductive Polymer via a Simple Mechanical Pressure Treatment
Improvement of the Optoelectrical Properties of a Transparent Conductive Polymer via a Simple Mechanical Pressure Treatment
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通过简单的机械压力处理改善透明导电聚合物的光电性能
DOI：
10.1021/acsomega.0c00355
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发表时间：
2020
期刊：
影响因子：
4.1
通讯作者：
Deyan He
中科院分区：
文献类型：
--
作者：
Yonggang Zhao;Hao Su;Qiming Liu;Li Zhang;Mingzhi Lv;Chaohui Jiao;Pu Cheng;Dequan Liu;Deyan He
本研究采用一种简单而新颖的机械压力处理（MPT）方法，有效地改善了乙二醇（EG）掺杂的PEDOT：PSS（EG-PEDOT：PSS）薄膜的电学和光学性能。PEDOT：PSS薄膜是迄今为止最成功的有机导体材料之一，由于其优良的成膜性能、高透光率和优异的热稳定性，被广泛应用于有机电子领域。结果表明，由于MPT改善了PEDOT和PSS之间的相分离，形成了互穿导电网络，EG-PEDOT：PSS薄膜的电导率提高了32%.同时，EG-PEDOT：PSS薄膜在近红外波段的透过率提高，表面粗糙度降低。这些薄膜还保持了其令人难以置信的柔韧性;经过5000次180°弯曲后，薄层电阻基本不变。考虑到这种MPT方法在工业应用中已经得到了很好的发展，因此很有希望将这种技术扩展到有机电子学领域。
In this study, a simple and novel mechanical pressure treatment (MPT) was used to effectively improve the electrical and optical properties of ethylene glycol (EG)-doped PEDOT:PSS (EG-PEDOT:PSS) thin films, one of the most successful organic conductor materials ever which is are widely used in organic electronics because of their admirable film-forming property, high light transmittance, and excellent thermal stability. It is found that the conductivity of the EG-PEDOT:PSS films increased by 32% due to dramatically enhanced carrier mobility because an MPT improves the phase separation between PEDOT and PSS and then yields an interpenetrating conductive network. Meanwhile, the transmittance of the EG-PEDOT:PSS films in the near-infrared band was enhanced, and the surface roughness was reduced. These thin films retain their incredible flexibility as well; after 5000 times of 180° bending, the sheet resistance is basically unchanged. Considering that this MPT approach is already well developed in industrial applications, it is very hopeful to extend this technique in the field of organic electronics.