ABSTRACT

We investigated a flexible and transparent conductive electrode (FTCE) based on Ag nanowires (AgNWs) and a graphene oxide (GO) nanosheet and fabricated through a simple and cost-effective spray coating method. The AgNWs/GO hybrid FTCE was optimized by adjusting the nozzle-to-substrate distance, spray speed, compressor pressure, and volume of the GO solution. The optimal AgNWs/GO hybrid FTCE has a high transmittance of 88% at a wavelength of 550 nm and a low sheet resistance of 20 Ohm/square. We demonstrate the presence of the GO nanosheet on the AgNWs through Raman spectroscopy. Using scanning electron microscopy and atomic force microscopy, we confirmed that the nanosheet acted as a conducting bridge between AgNWs and improved the surface morphology and roughness of the electrode. Effective coverage by the GO sheet improved the conductivity of the AgNWs electrode Effective coverage of the GO sheet improved conductivity of the AgNWs electrode with minimum degradation of optical and mechanical properties. Flexible thin film heater (TFH) and electroluminescent (EL) devices fabricated on AgNWs/GO hybrid FTCEs showed better performance than devices on bare AgNWs electrodes due to lower sheet resistance and uniform conductivity. In addition, an AgNWs/GO electrode layer on a facial mask acts as a self-heating and antibacterial coating. A facial mask with an AgNWs/GO electrode showed a bacteriostatic reduction rate of 99.7 against Staphylococcus aureus and Klebsiella pneumonia.

摘要

我们研究了一种基于银纳米线（AgNW）和氧化石墨烯（GO）纳米片的柔性透明导电电极（FTCE），并通过简单且经济高效的喷涂方法制造。通过调整喷嘴到基底的距离、喷雾速度、压缩机压力和 GO 溶液的体积来优化 AgNWs/GO 混合 FTCE。最佳的 AgNWs/GO 混合 FTCE 在 550 nm 波长下具有 88% 的高透射率和 20 Ohm/square 的低薄层电阻。我们通过拉曼光谱证明了 AgNW 上 GO 纳米片的存在。使用扫描电子显微镜和原子力显微镜，我们证实纳米片充当银纳米线之间的导电桥，并改善了电极的表面形貌和粗糙度。GO 片的有效覆盖提高了 AgNWs 电极的电导率 GO 片的有效覆盖提高了 AgNWs 电极的电导率，同时光学和机械性能的退化最小。由于较低的薄层电阻和均匀的电导率，在 AgNW/GO 混合 FTCE 上制造的柔性薄膜加热器 (TFH) 和电致发光 (EL) 器件表现出比裸 AgNW 电极上的器件更好的性能。此外，面膜上的 AgNWs/GO 电极层可充当自加热和抗菌涂层。带有AgNWs/GO电极的面膜对金黄色葡萄球菌和肺炎克雷伯菌的抑菌率达到99.7 。