摘要
将乙二醇(EG)掺杂的聚(3,4-乙烯二氧噻吩)∶聚(苯乙烯磺酸)(PEDOT∶PSS)溶液制备的PEDOT∶PSS墨水采用凹版印刷工艺印刷在氧等离子体处理的聚对苯二甲酸乙二醇酯(PET)基底上,制备了PET-PEDOT∶PSS透明薄膜,经甲酸后处理后得到了PET-PEDOT∶PSS透明薄膜电极。在大气环境下,以PET-PEDOT∶PSS透明薄膜电极为阳极、图案化丝网印刷银电极为阴极,采用全溶液法制备了柔性发光电化学池(LEC)。采用视频光学接触角仪、超景深三维显微镜、SEM、四探针测试仪、XRD、紫外-可见-近红外分光光度计、柔性电子测试仪、台阶仪对PET-PEDOT∶PSS透明薄膜电极进行了表征和测试,考察了EG掺杂量(以PEDOT∶PSS溶液体积计,下同)对电极性能的影响,对LEC的发光性能和特性曲线进行了测试。结果表明,氧等离子体处理显著提高了PET表面的润湿性,掺杂量为5.0%的EG有效改善了PEDOT∶PSS墨水的成膜性和导电性,制备的PET-PEDOT∶PSS透明薄膜电极方阻为380Ω/cm^(2),550 nm波长处的光透过率为88.06%,在不同机械弯曲角度(30°~120°)下,经过600 s弯曲测试后,仍能保持良好的电学性能,电阻变化率为0.22%~1.58%。底部发光的柔性LEC的最大亮度达到110.4 cd/m^(2),并在多个弯曲角度(30°~60°)下展现出优异的图案化发光特性。
Poly(3,4-vinyl dioxthiophene)∶poly(styrene sulfonic acid)(PEDOT∶PSS)transparent films were prepared from gravure-printing ethylene glycol(EG)doped PEDOT∶PSS solution(PEDOT∶PSS ink)onto oxygen plasma treated polyethylene terephthalate(PET)substrate,and then treated with formic acid to obtain PET-PEDOT∶PSS transparent film electrode.Flexible luminescent electrochemical cell(LEC)was further assembled by using PET-PEDOT∶PSS transparent film electrode as anode and patterned silver electrodes as cathode under atmospheric environment.The PET-PEDOT∶PSS transparent film electrodes were characterized and analyzed by video optical contact angle instrument,ultra-depth of field three-dimensional microscope,SEM,four-probe tester,XRD,UV-Vision-near-infrared spectrophotometer,flexible electronic tester and step meter.The influence of EG doping amount(based on the PEDOT∶PSS solution volume,the same below)on the electrode performance was investigated,and the luminescence performance and characteristic curve of LEC were measured.The results showed that oxygen plasma treatment significantly improved the wettability of PET surface,EG with a doping amount of 5.0%effectively improved the membrane formation and electrical conductivity of PEDOT∶PSS ink,the prepared PET-PEDOT∶PSS transparent film electrode exhibited a square resistance of 380Ω/cm^(2),with the light transmittance at 550 nm reaching 88.06%.Under different mechanical bending angles(30°~120°),the transparent film electrode could still maintain good electrical properties,and the resistance change rate was 0.22%~1.58%after 600 s bending tests.The bottom-glowing flexible LEC,with a maximum luminance of 110.4 cd/m^(2),exhibited excellent patterned luminescence at multiple bending angles(30°to 60°).
作者
吴家豪
刘国栋
石嘉钰
王要李
张蔚琳
WU Jiahao;LIU Guodong;SHI Jiayu;WANG Yaoli;ZHANG Weilin(College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science&Technology,Xi'an 710021,Shaanxi,China;National Demonstration Center for Experimental Light Chemistry Engineering Education,Xi'an 710021,Shaanxi,China;Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development,Xi'an 710021,Shaanxi,China;Key Laboratory of Functional Printing and Transport Packaging of China National Light Industry,Xi'an 710021,Shaanxi,China;Key Laboratory of Paper-Based Functional Materials of China National Light Industry,Xi'an 710021,Shaanxi,China)
出处
《精细化工》
北大核心
2025年第10期2150-2157,共8页
Fine Chemicals
基金
国家自然科学基金项目(22078186)。
