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Robust Transparent Conducting Electrode Based on Silver Nanowire Coating on Polyelectrolytes Multilayers
Thin Solid Films ( IF 2.0 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.tsf.2020.138272
Jedsada Chavalitkul , Olivier Margeat , Jörg Ackermann , Stephan T. Dubas

Abstract Transparent conductive electrodes were fabricated by the deposition of silver nanowires (AgNW) on various substrates modified by the deposition of polyelectrolyte multilayers (PEM) as primer. The PEM primer films were coated on the glass substrate by the sequential deposition of 7 or 8 layers of poly(diallyl dimethyl ammonium chloride) (PDADMAC) and poly(styrene sulfonate) to improve the adhesion of AgNW and produce flexible transparent conducting electrode. AgNW, with a diameter of 20–30 nm and 10–30 µm in length, were synthesized using a modified solvothermal method using glycerol and poly(vinyl pyrrolidone) as reducing and capping agent. The physicochemical properties of the AgNW coated PEM were characterized using UV–Vis spectroscopy, atomic force microscope and field emission scanning electron microscope. The electrical conductivity of the layer was measured by 4 points probe and a standard scotch tape peeling test was used to investigate the stability of the coated AgNW on the PEM. The PEM 7 layers (with PDADMAC as outer layer) gave the best results to immobilize AgNW with the lowest sheet resistance (14 Ω/square) while maintaining excellent transparency (85% transmission at 550 nm) even after up to 6 peeling test cycles. Finally, to demonstrate the benefit of this method, poly(ethylene terephthalate) sheet was coated with PEM primer and AgNW to produce flexible transparent conducting electrode.

中文翻译:

基于银纳米线涂层在聚电解质多层上的坚固透明导电电极

摘要 透明导电电极是通过将银纳米线 (AgNW) 沉积在通过沉积聚电解质多层膜 (PEM) 作为底漆而改性的各种基板上制备的。通过连续沉积 7 或 8 层聚(二烯丙基二甲基氯化铵)(PDMAC)和聚(苯乙烯磺酸盐)将 PEM 底漆膜涂覆在玻璃基板上,以提高 AgNW 的附着力并生产柔性透明导电电极。AgNW 的直径为 20-30 nm,长度为 10-30 µm,使用改进的溶剂热法合成,使用甘油和聚乙烯吡咯烷酮作为还原剂和封端剂。使用 UV-Vis 光谱、原子力显微镜和场发射扫描电子显微镜表征了 AgNW 涂层 PEM 的物理化学性质。该层的电导率通​​过 4 点探针测量,并使用标准透明胶带剥离测试来研究 PEM 上涂覆的 AgNW 的稳定性。PEM 7 层(以 PDMAC 作为外层)在固定 AgNW 时取得了最佳结果,具有最低的薄层电阻(14 Ω/平方),同时即使在多达 6 次剥离测试循环后仍保持出色的透明度(550 nm 处的透射率为 85%)。最后,为了证明这种方法的好处,聚对苯二甲酸乙二醇酯片涂有 PEM 底漆和 AgNW,以生产柔性透明导电电极。PEM 7 层(以 PDMAC 作为外层)在固定 AgNW 时取得了最佳结果,具有最低的薄层电阻(14 Ω/平方),同时即使在多达 6 次剥离测试循环后仍保持出色的透明度(550 nm 处的透射率为 85%)。最后,为了证明这种方法的好处,聚对苯二甲酸乙二醇酯片涂有 PEM 底漆和 AgNW,以生产柔性透明导电电极。PEM 7 层(以 PDMAC 作为外层)在固定 AgNW 时取得了最佳结果,具有最低的薄层电阻(14 Ω/平方),同时即使在多达 6 次剥离测试循环后仍保持出色的透明度(550 nm 处的透射率为 85%)。最后,为了证明这种方法的好处,聚对苯二甲酸乙二醇酯片涂有 PEM 底漆和 AgNW,以生产柔性透明导电电极。
更新日期:2020-10-01
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