Electrostatic self-assembly of graphene–silver multilayer films and their transmittance and electronic conductivity
Electrostatic self-assembly of graphene–silver multilayer films and their transmittance and electronic conductivity
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DOI：
10.1016/j.carbon.2012.04.069
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发表时间：
2012-10
期刊：
影响因子：
10.9
通讯作者：
Yazhou Zhou;Juan-Yu Yang;Xiao-Nong Cheng;N. Zhao;Lei Sun;Hongbo Sun;Dan Li
中科院分区：
文献类型：
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作者：
Yazhou Zhou;Juan-Yu Yang;Xiao-Nong Cheng;N. Zhao;Lei Sun;Hongbo Sun;Dan Li
通过静电自组装方法交替沉积氧化石墨烯（GO）片和硝酸银，制备了GO-Ag+薄膜。热退火后，获得了具有高透明度和导电性的石墨烯-银纳米颗粒（GE-Ag）多层膜。经过四次组装循环的薄膜在550nm波长下的透过率为86.3%，优于纯GE薄膜的透过率（73.8%）。而表面电阻为97kΩ□−1，远低于纯GE薄膜的表面电阻（430kΩ□−1）。 Ag纳米颗粒在改善GE-Ag薄膜的性能方面发挥着至关重要的作用，充当导电路径和捕获光的纳米颗粒，不仅减少了薄膜的反射，而且还防止GE片材聚集并在片材之间提供导电路径，提高了导电性。
By alternating deposition of graphene oxide (GO) sheets and silver nitrate by means of an electrostatic self-assembly method, a GO–Ag+film was prepared. After thermal annealing, a graphene–silver nanoparticle (GE–Ag) multilayer film, with high transparency and electrically conductivity, was obtained. The transmittance of a film with four assembly cycles was 86.3%, at a wavelength of 550nm, better than that of a pure GE film (73.8%). While the surface resistance was 97kΩ□−1, much lower than that of a pure GE film (430kΩ□−1). The Ag nanoparticles play a crucial role in improving the properties of the GE–Ag film, acting as conductive paths and light-trapping nanoparticles, which not only reduces the reflection of the film, but also prevents the GE sheets from aggregation and provides conductive paths between sheets, improving the electrical conductivity.