Silver nanowires (AgNWs) have gained significant attention from researchers as a promising material for producing flexible transparent conductive films, which can be utilized in touch and display screens. Thereinto, the ultrahigh aspect ratio AgNW network can theoretically decrease the contact resistance effectively while still retaining considerable mechanical and optical properties. However, fabrication of high-quality AgNWs with a fine diameter and high aspect ratio is still challenging. Herein, a simple and robust approach to synthesize ultrahigh aspect ratio AgNWs is presented. This study successfully fabricated AgNWs with the highest aspect ratio up to ∼4000 and an average length of ∼72 μm by utilizing tetrabutylammonium tribromide as an auxiliary additive. The manifestation of tetrabutylammonium tribromide was proven to be beneficial for the generation of silver seeds and the expansion of AgNWs. The obtained AgNWs were utilized to create a transparent conductive film that showed low sheet resistance of 22.4 Ω/sq and high transmittance and low haze of 87.71 and 4.15%, respectively. The transmittance and haze of the vacant poly(ethylene terephthalate) support were 90.13 and 2.05%, thereby offering great potential for application in flexible transparent electrodes.

中文翻译：

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三溴化四丁基铵诱导合成超高长径比银纳米线用于柔性透明薄膜

银纳米线（AgNW）作为生产柔性透明导电薄膜（可用于触摸屏和显示屏）的有前景的材料，受到了研究人员的极大关注。其中，超高深宽比AgNW网络理论上可以有效降低接触电阻，同时仍保留相当大的机械和光学性能。然而，制造具有细直径和高深宽比的高质量银纳米线仍然具有挑战性。在此，提出了一种简单而稳健的合成超高深宽比银纳米线的方法。本研究利用三溴化四丁基铵作为辅助添加剂，成功制备了长径比最高可达~4000、平均长度~72 μm的银纳米线。三溴化四丁基铵的出现被证明有利于银种子的产生和银纳米线的扩展。所获得的AgNW用于制造透明导电薄膜，其显示出22.4Ω/sq的低方块电阻以及分别为87.71%和4.15%的高透光率和低雾度。空的聚对苯二甲酸乙二醇酯载体的透光率和雾度分别为90.13和2.05%，在柔性透明电极中具有巨大的应用潜力。