Annealing-free, flexible silver nanowire-polymer composite electrodes via a continuous two-step spray-coating method
Annealing-free, flexible silver nanowire-polymer composite electrodes via a continuous two-step spray-coating method
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DOI：
10.1039/c2nr32221h
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发表时间：
2013-01-01
期刊：
影响因子：
6.7
通讯作者：
Kim, Sang Soo
中科院分区：
文献类型：
--
作者：
Choi, Dong Yun;Kang, Hyun Wook;Kim, Sang Soo
为了实现高效率的柔性光电子器件，透明电极必须通过低温工艺制备，并具有低表面粗糙度的关键特征。采用两步喷涂法制备了大尺寸、光滑、柔韧的银纳米线（AgNW）-聚3，4-乙撑二氧噻吩：聚苯乙烯磺酸（PEDOT：PSS）复合电极。在没有高温退火处理的情况下，通过将高导电性的PEDOT：PSS用二甲基亚砜（DMSO）改性来提高复合膜的导电性。在室温条件下制备的AgNW-PEDOT：PSS复合薄膜的平均透光率为84.3%，方块电阻为10.76 Ω sq（-1）。品质因数Phi（TC）高于氧化铟锡（ITO）薄膜获得的品质因数。在200次拉伸和压缩折叠循环期间，复合膜的薄层电阻略微增加小于5.3%，显示出用于柔性光电应用的良好机电柔性。
For the realization of high-efficiency flexible optoelectronic devices, transparent electrodes should be fabricated through a low-temperature process and have the crucial feature of low surface roughness. In this paper, we demonstrated a two-step spray-coating method for producing large-scale, smooth and flexible silver nanowire (AgNW)-poly3,4-ethylenedioxythiophene: polystyrenesulfonate (PEDOT:PSS) composite electrodes. Without the high-temperature annealing process, the conductivity of the composite film was improved via the lamination of highly conductive PEDOT: PSS modified by dimethyl sulfoxide (DMSO). Under the room temperature process condition, we fabricated the AgNW-PEDOT:PSS composite film showing an 84.3% mean optical transmittance with a 10.76 Omega sq(-1) sheet resistance. The figure of merit Phi(TC) was higher than that obtained from the indium tin oxide (ITO) films. The sheet resistance of the composite film slightly increased less than 5.3% during 200 cycles of tensile and compression folding, displaying good electromechanical flexibility for use in flexible optoelectronic applications.