还原石墨烯氧化物-银纳米线柔性复合电极的制备与性能研究

Fabrication and Characterization of Reduced Graphene Oxide / Silver Nanowires Flexible Hybrid Electrodes

制备了一种具有高导电性、高透过率以及良好的柔性和机械稳定性的还原石墨烯氧化物(RGO)-银纳米线(Ag NW)复合电极。将低浓度的Ag NW旋涂在制备的RGO薄膜上,使Ag NW搭接在RGO的晶界、褶皱处,提高了RGO薄膜的载流子迁移能力。在保证透过率的前提下,提高复合薄膜的导电性能。结合薄膜转写工艺,制备了电阻为420Ω/□且透过率达62%的RGO-Ag NW柔性复合电极。该复合电极具有良好的柔性以及机械稳定性,随着弯折次数的增加,电阻没有明显变化。

Flexible electrodes with high conductivity and transparence are still great challenges in the fabrication of stretchable optoelectronic devices. In this experiment,we demonstrated a flexible hybrid electrode based on reduced graphene oxide（ RGO） and silver nanowires（ Ag NW）. The RGO was prepared by thermal reduction and hydrazine reduction of graphene oxide to partially remove the oxygen-containing groups and to restore its electrical properties. We employed Ag NW to restore the defects in RGO films,such as grain boundaries and wrinkles,to improve the conductivity of the electrodes. By optimizing the processing conditions,the flexible hybrid electrode exhibited excellent optical and electrical characteristics as well as mechanical flexibility. The optical transmittance and sheet resistance of the hybrid electrode were 62% at 550 nm and 420 Ω / □. The RGO /Ag NW hybrid electrode shows the potential for a wide range of flexible and stretchable optoelectronic device applications.