Yao Maomao, Zhao Lulu, Fan Chunyu, Han Xingbo, Wu Zhongbin, Sun Hengda, Wang Gang, Xiao Ru
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
Frontiers Science Center for Flexible Electronics, Institute of Flexible Electronics, Northwestern Polytechnical University, Xi'an 710072, China.
Chem Commun (Camb). 2024 Aug 15;60(67):8884-8887. doi: 10.1039/d4cc02580f.
In the preparation of flexible electronic devices, obtaining a transparent conductive electrode with high electrical conductivity, high transparency, and mechanical flexibility is a significant challenge. This study developed a simple method for preparing ultra-long silver nanowires (ul-AgNWs), obtaining high-purity ul-AgNWs with an average length of 317.66 ± 98.60 μm, an average diameter of 78.06 ± 13.87 nm, and an aspect ratio exceeding 4000. Integrating these ul-AgNWs with a polyethylene terephthalate (PET) film, a flexible transparent electrode (FTE) with = 561 Ω and = 97% was obtained. The ul-AgNWs were welded by driving the welding liquid to the intersection points through surface tension, resulting in a decrease of to 61 Ω, = 98.2%, and achieving a FTE with excellent mechanical properties. Furthermore, this FTE was applied in the preparation of OLED devices, showing a turn-on voltage of 2.7 V, and the maximum current efficiency and power efficiency reached 58.6 mA cm and 64.7 lm W, respectively, demonstrating its significant potential in flexible optoelectronic devices.
在柔性电子器件的制备过程中，获得具有高导电性、高透明度和机械柔韧性的透明导电电极是一项重大挑战。本研究开发了一种制备超长银纳米线（ul-AgNWs）的简单方法，获得了平均长度为317.66±98.60μm、平均直径为78.06±13.87nm且长径比超过4000的高纯度ul-AgNWs。将这些ul-AgNWs与聚对苯二甲酸乙二醇酯（PET）薄膜集成，得到了方阻为561Ω、透光率为97%的柔性透明电极（FTE）。通过表面张力将焊接液驱动到交叉点对ul-AgNWs进行焊接，方阻降至61Ω，透光率为98.2%，并获得了具有优异机械性能的FTE。此外，这种FTE应用于OLED器件的制备，开启电压为2.7V，最大电流效率和功率效率分别达到58.6mA/cm²和64.7lm/W，表明其在柔性光电器件中具有巨大潜力。
