Huang Chi-Hsien, Wang Yin-Yin, Lu Tsung-Han, Li Yen-Cheng
Department of Materials Engineering, Ming Chi University of Technology, 84 Gungjuan Rd., Taishan Dist., New Taipei City 243, Taiwan.
Material and Chemical Research Laboratories, Industrial Technology Research Institute, 195, Sec. 4, Chung Hsin Rd., Chutung, Hsinchu 300, Taiwan.
Polymers (Basel). 2017 Jan 13;9(1):28. doi: 10.3390/polym9010028.
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 (H) 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 H 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.
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(H)来减少聚合物基底聚对苯二甲酸乙二酯(PET)上的氧化石墨烯(GO)涂层。四点探针法和紫外可见(UV-Vis)光谱表明,通过改变H₂/Ar流速、处理时间和射频(RF)功率,可以控制导电性和透光率。光发射光谱显示,H强度取决于这些工艺参数,这些参数会影响氧化官能团的去除(通过X射线光电子能谱确认),从而生成还原氧化石墨烯(rGO)。为了在保持高透光率的同时进一步提高导电性,我们在rGO和PET基底之间引入银纳米线(AgNWs),以获得方阻约为100Ω/sq且透光率为81%的rGO/AgNWs/PET复合材料。此外,rGO/AgNWs混合薄膜还具有高柔韧性和耐久性,适用于柔性和可穿戴电子应用。