Facile synthesis of Ag interlayer doped graphene by chemical vapor deposition using polystyrene as solid carbon source.
Facile synthesis of Ag interlayer doped graphene by chemical vapor deposition using polystyrene as solid carbon source.
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DOI：
10.1021/am300014c
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发表时间：
2012-04
影响因子：
9.5
通讯作者：
Tianru Wu;Honglie Shen;Lei Sun;B. Cheng;B. Liu;Jiancang Shen
中科院分区：
文献类型：
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作者：
Tianru Wu;Honglie Shen;Lei Sun;B. Cheng;B. Liu;Jiancang Shen
以聚苯乙烯为固体碳源，采用化学气相沉积法合成了石墨烯。在1000℃的大气压下，通过调节聚苯乙烯的重量可以控制石墨烯的层数，然后用柠檬酸还原的方法在石墨烯上沉积银纳米粒子。用表面增强拉曼散射光谱和X射线光电子能谱研究了石墨烯与银的相互作用。G带位置的变化表明，由于银和石墨烯之间的相互作用，石墨烯发生了n型掺杂。银夹层掺杂的四层石墨烯的方阻为63Ω/sq，在550nm光透过率为85.4%。石墨烯的光学和电学质量超过了铟锡氧化物替代材料的最低行业标准。可以清楚地认识到，层间掺杂石墨烯薄膜的环境片阻稳定性好于表面掺杂的石墨烯薄膜。石墨烯在表面的存在也为内部的银离子和团簇提供了保护层。
Graphene was synthesized by chemical vapor deposition using polystyrene as the solid carbon source. The number of graphene layers could be controlled by regulating the weight of polystyrene under atmospheric pressure at 1000 °C. Silver nanoparticles were then deposited on the graphene by a citrate reduction method. The interaction between graphene and silver was investigated by suface-enhanced Raman scattering spectra and X-ray photoelectron spectroscopy. The change in the G band position indicates n-type doping of the graphene due to an interaction between the silver and the graphene. Silver interlayer doped four-layer graphene shows a sheet resistance of 63 Ω/sq and a light transmittance of 85.4% at 550 nm. The optical and electrical quality of graphene exceeds the minimum industry standard for indium tin oxide replacement materials. It is clearly understood that the environmental sheet resistance stability of the interlayer doped graphene film is better than that of surface doped graphene sheets. The presence of graphene at the surface also acts as a protective layer for the inner silver ions and clusters.