Highly conductive silver nanowire transparent electrode by selective welding for organic light emitting diode
Highly conductive silver nanowire transparent electrode by selective welding for organic light emitting diode
复制标题
有机发光二极管选择性焊接高导电银纳米线透明电极
DOI：
10.1016/j.orgel.2018.05.028
复制
发表时间：
2018-09-01
影响因子：
3.2
通讯作者：
He, Gufeng
中科院分区：
文献类型：
--
作者：
Lian, Lu;Xi, Xin;He, Gufeng
采用溶液法制备了一种高度光滑、导电、空气稳定的柔性透明银纳米线（AgNW）复合薄膜。将AgNW/聚乙烯醇缩丁醛（PVB）薄膜浸入银-氨和葡萄糖混合溶液中仅几秒钟后，其薄层电阻显著降低。该溶液选择性地润湿AgNW而不是PVB基底，因为AgNW是亲水的而PVB是疏水的。银纳米线表面的银氨被还原成银，银将纳米线组装在一起。这种AgNW的选择性焊接极大地增加了复合膜的电导率，而没有明显衰减其透射率。具体地，该AgNW复合膜的薄层电阻为10.1 Ω/sq，在550 nm波长处的透射率为87%M，并且其还显示出优异的稳定性。该膜可以容易地图案化，并且使用该复合膜作为阳极，有机发光二极管表现出与ITO器件相当的性能。这种简单有效的溶液处理方法具有很强的工业化应用潜力。
A highly smooth, conducive and air-stable flexible transparent silver nanowire (AgNW) composite film is developed by solution process without high temperature treatment. The sheet resistance of the AgNW/polyvinyl butyral (PVB) film decreases significantly after the film is immersed into the silver-ammonia and glucose mixed solution for only a few seconds. The solution selectively wets the AgNWs rather than the PVB substrate, because the AgNWs is hydrophilic while the PVB is hydrophobic. The silver-ammonia on the surface of the AgNWs is reduced into silver, which solders the nanowire assembles together. This selective welding of the AgNWs greatly increases the electrical conductivity of the composite film without obviously attenuating its transmittance. Specifically, the sheet resistance of this AgNW composite film is 10.1 Omega/sq with a transmittance of 87% M the wavelength of 550 nm, and it also shows excellent stability. The film can be easily patterned and employing this composite film as an anode, the organic light emitting diode exhibits comparable performance to the ITO device. This simple and effective solution process method shows strong potential to be applied in industrial mass production.