银纳米线复合柔性透明电极的制备与表征

Preparation and Characteristics of Composite Flexible Transparent Electrodes of Silver Nanowires

为了改善银纳米线(AgNWs)柔性透明电极的环境稳定性和机械柔韧性,首先通过溶剂超声、紫外-臭氧照射对衬底表面进行预处理;然后在柔性衬底上,通过旋涂与热处理制备出氧化石墨烯、银纳米线、氧化石墨烯三层复合柔性透明电极。研究结果表明,最优条件下制备出的复合柔性透明电极表面电阻为9.05Ω,透光率为91%。此外,将复合柔性透明电极放置在大气环境中30 d,复合柔性透明电极表面电阻变化率小于0.4;将复合柔性透明电极在弯曲半径为0.5 cm、弯曲角度为180°条件下弯曲200次,复合柔性透明电极表面电阻变化率小于1.2。该复合柔性透明电极有效地改善了AgNWs电极的导电性、透光性与成膜性,并且具备良好的机械柔韧性与环境稳定性。

To improve the environmental stability and mechanical flexibility of flexible transparent electrode(FTE)of silver nanowires(AgNWs),the surface of flexible subsrtate was firstly pretreated by solvent ultrasonic and ultraviolet-ozone irradiation.Then,the composite FTE of graphene oxide/AgNWs/graphene oxide was fabricated by spin-coating and thermal treatment on flexible substrate.The result shows that the prepared composite FTE has the sheet resistance of 9.05Ω and the light transmittance of 91% under optimal conditions.In addition,the change rate of the sheet resistance of the composite FTE is lower than 0.4 when it is placed in the atmosphere for 30 d and it is lower than 1.2 when it is bent 200 times with radius of 0.5 cm and angle of 180°.The composite FTE can effectively improve the conductivity,transmittance and filmforming of AgNWs electrode,and shows excellent mechanical flexibility and environmental stability.