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Flexible Transparent Electrode of Hybrid Ag-Nanowire/Reduced-Graphene-Oxide Thin Film on PET Substrate Prepared Using H2/Ar Low-Damage Plasma

机译:使用H2 / Ar低损伤等离子体制备的PET基底上的Ag-纳米线/氧化石墨烯-氧化物杂化薄膜的柔性透明电极

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摘要

We employ H2/Ar low-damage plasma treatment (H2/Ar-LDPT) to reduce graphene oxide (GO) coating on a polymer substrate—polyethylene terephthalate (PET)—with the assistance of atomic hydrogen (Hα) at low temperature of 70 °C. Four-point probing and ultraviolet-visible (UV-Vis) spectroscopy demonstrate that the conductivity and transmittance can be controlled by varying the H2/Ar flow rate, treatment time, and radio-frequency (RF) power. Optical emission spectroscopy reveals that the Hα intensity depends on these processing parameters, which influence the removal of oxidative functional groups (confirmed via X-ray photoelectron spectroscopy) to yield reduced GO (rGO). To further improve the conductivity while maintaining high transmittance, we introduce silver nanowires (AgNWs) between rGO and a PET substrate to obtain a hybrid rGO/AgNWs/PET with a sheet resistance of ~100 Ω/sq and 81% transmittance. In addition, the hybrid rGO/AgNWs thin film also shows high flexibility and durability and is suitable for flexible and wearable electronics applications.
机译:我们采用H2 / Ar低损伤等离子体处理(H2 / Ar-LDPT),在70°C的低温下借助原子氢(Hα)来减少聚合物基材聚对苯二甲酸乙二醇酯(PET)上的氧化石墨烯(GO)涂层℃。四点探测和紫外可见(UV-Vis)光谱表明,可以通过改变H2 / Ar流量,处理时间和射频(RF)功率来控制电导率和透射率。发光光谱表明,Hα强度取决于这些加工参数,这些参数影响氧化官能团的去除(通过X射线光电子能谱确认),从而产生还原的GO(rGO)。为了在保持高透射率的同时进一步提高电导率,我们在rGO和PET基板之间引入了银纳米线(AgNWs),以获得薄膜电阻为〜100Ω/ sq和透射率为81%的混合rGO / AgNWs / PET。此外,rGO / AgNWs混合薄膜还具有很高的柔韧性和耐用性,适用于柔性和可穿戴电子应用。

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