Aligning Ag Nanowires by a Facile Bioinspired Directional Liquid Transfer: Toward Anisotropic Flexible Conductive Electrodes,Advanced Materials

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Aligning Ag Nanowires by a Facile Bioinspired Directional Liquid Transfer: Toward Anisotropic Flexible Conductive Electrodes
Advanced Materials ( IF 27.4 ) Pub Date : 2018-04-30 , DOI: 10.1002/adma.201706938
Lili Meng ₁ , Ruixin Bian ₁ , Cheng Guo ₁ , Bojie Xu ₁ , Huan Liu _{1,

2} , Lei Jiang _{1,

2}

Affiliation

Recent years have witnessed the booming development of transparent flexible electrodes (TFEs) for their applications in electronics and optoelectronic devices. Various strategies have thus been developed for preparing TFEs with higher flexibility and conductivity. However, little work has focused on TFEs with anisotropic conductivity. Here, a facile strategy of directional liquid transfer is proposed, guided by a conical fibers array (CFA), based on which silver nanowires (AgNWs) are aligned on a soft poly(ethylene terephthalate) substrate in large scale. After further coating a second thin layer of the conductive polymer poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate), a TFE with notable anisotropic conductivity and excellent optical transmittance of 95.2% is prepared. It is proposed that the CFA enables fine control over the receding of the three‐phase contact line during the dewetting process, where AgNWs are guided and aligned by the as‐generated directional stress. Moreover, anisotropic electrochemical deposition is enabled where the Cu nanoparticles deposit only on the oriented AgNWs, leading to a surface with anisotropic wetting behavior. Importantly, the approach enables alignment of AgNWs via multiple directions at one step. It is envisioned that the as‐developed approach will provide an optional approach for simple and low‐cost preparation of TFE with various functions.

中文翻译：

通过方便的生物启发方向性液体转移对准Ag纳米线：向各向异性柔性导电电极的方向。

近年来，目睹了透明柔性电极（TFE）在电子和光电设备中的应用蓬勃发展。因此，已经开发出各种策略来制备具有更高的柔韧性和导电性的TFE。但是，很少有工作集中在具有各向异性导电性的TFE上。在此，提出了一种在圆锥形纤维阵列（CFA）的指导下进行定向液体转移的简便策略，基于该策略，银纳米线（AgNWs）在软质聚对苯二甲酸乙二醇酯基板上大规模对齐。在进一步涂覆导电聚合物聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）的第二层薄层后，制备出具有显着各向异性导电性和95.2％的出色光学透射率的TFE。建议CFA能够在去湿过程中对三相接触线的后退进行精细控制，在该过程中，AgNW受所产生的方向应力引导和对准。而且，能够进行各向异性电化学沉积，其中Cu纳米颗粒仅沉积在取向的AgNWs上，从而导致具有各向异性润湿行为的表面。重要的是，该方法可以一步完成多个方向的AgNW对准。可以预见，已开发的方法将为具有各种功能的TFE的简单且低成本的制备提供一种可选方法。能够进行各向异性电化学沉积，其中Cu纳米颗粒仅沉积在取向的AgNWs上，从而导致具有各向异性润湿行为的表面。重要的是，该方法可以一步完成多个方向的AgNW对准。可以预见，已开发的方法将为具有各种功能的TFE的简单且低成本的制备提供一种可选方法。能够进行各向异性电化学沉积，其中Cu纳米颗粒仅沉积在取向的AgNWs上，从而导致具有各向异性润湿行为的表面。重要的是，该方法可以一步完成多个方向的AgNW对准。可以预见，已开发的方法将为具有各种功能的TFE的简单且低成本的制备提供一种可选方法。

更新日期：2018-04-30

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