Large-Scale Synthesis of Uniform Silver Nanowires by High-Gravity Technology for Flexible Transparent Conductive Electrodes
Large-Scale Synthesis of Uniform Silver Nanowires by High-Gravity Technology for Flexible Transparent Conductive Electrodes
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高重力技术大规模合成均匀银纳米线用于柔性透明导电电极
DOI：
10.1021/acs.iecr.9b04539
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发表时间：
2019-11-13
影响因子：
4.2
通讯作者：
Chen, Jian-Feng
中科院分区：
文献类型：
--
作者：
Bao, Jun;Wang, Jie-Xin;Chen, Jian-Feng
银纳米线(AgNW)具有良好的柔韧性和电学性能，是一种很有前途的柔性光电子器件的替代材料。然而，规模化生产具有均匀形貌和高产率的大长径比AgNW仍然是一个巨大的挑战。为此，提出了一种旋转填充床反应沉淀法与多元醇还原相结合的方法来合成AgNW。产物尺寸均匀，长径比大，平均长度为55μm，平均直径为20 nm。值得注意的是，AgNWs的产率达到95%，当产量提高10倍时，没有放大效应。用AgNW制备的柔性透明导电电极具有优异的机械柔性和光电性能，其方阻为9.6Ω·sq-1，可见光透过率为90%。
Silver nanowire (AgNW) is a promising substitute for indium tin oxide in flexible optoelectronic devices because of its excellent flexibility and electrical properties. However, the mass production of high-aspect-ratio AgNWs with uniform morphology and high yield still remains a great challenge. Herein, a novel approach of high-gravity reactive precipitation in a rotating packed bed reactor combined with the polyol reduction process was proposed for the synthesis of AgNWs. The products have a uniform size and large aspect ratio with the average length of 55 μm and the average diameter of 20 nm, respectively. Notably, the yield of AgNWs reaches 95%, and there is no scale-up effect when the throughput is enhanced by 10 times. The flexible transparent conductive electrode fabricated with AgNWs exhibits outstanding mechanical flexibility and optoelectronic performance with a low sheet resistance of 9.6 Ω·sq–1 at a high visible transmittance of 90%.