Department of Chemical Engineering, ‡Department of Chemistry and Research Institute for Natural Science, §Institute of Nano Science and Technology, and ∥Department of Physics, Hanyang University , Seoul 04763, Korea.
ACS Appl Mater Interfaces. 2017 Jun 7;9(22):19231-19237. doi: 10.1021/acsami.7b04284. Epub 2017 May 30.
Owing to its high conductivity, solution processability, mechanical flexibility, and transparency, poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) has been extensively explored for use in functional devices including solar cells, sensors, light-emitting diodes, and supercapacitors. The ability to fabricate patterned PEDOT:PSS on a solid substrate is of significant importance to develop practical applications of this conducting polymer. Herein, we describe a new approach to obtain PEDOT:PSS patterns that are based on a polymerizable supramolecular concept. Specifically, we found that UV irradiation of a photopolymerizable diacetylene containing PEDOT:PSS film followed by development in deionized water and subsequent treatment with sulfuric acid (glass and silicon wafer) or formic acid (PET) produces micron-sized PEDOT:PSS patterns on solid substrates. The newly designed photolithographic method, which can be employed to generate highly conductive (>1000 S/cm) PEDOT:PSS patterns, has many advantages including the use of aqueous process conditions, a reduced number of process steps, and no requirement for plasma etching procedures.
由于其高导电性、溶液加工性、机械柔韧性和透明性，聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）已被广泛探索用于各种功能器件，包括太阳能电池、传感器、发光二极管和超级电容器。在固体基底上制造图案化 PEDOT：PSS 的能力对于开发这种导电聚合物的实际应用具有重要意义。在此，我们描述了一种基于可聚合超分子概念获得 PEDOT：PSS 图案的新方法。具体而言，我们发现，对含有 PEDOT：PSS 的光聚合二乙炔薄膜进行紫外线照射，然后在去离子水中显影，随后用硫酸（玻璃和硅片）或甲酸（PET）处理，可在固体基底上产生微米级的 PEDOT：PSS 图案。新设计的光刻方法可用于生成高导电性（>1000 S/cm）的 PEDOT：PSS 图案，具有许多优点，包括使用水相处理条件、减少处理步骤数以及不需要等离子体蚀刻工艺。
