| 石墨烯/银复合薄膜的制备及表征 |
| Synthesis and Characterization of Graphene/Ag Composite Films |
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| 摘要: 采用静电自组装技术，通过交替沉积聚(二烯丙基二甲基氯化铵)(PDDA)(或硝酸银)和氧化石墨烯，制备氧化石墨烯/PDDA薄膜和氧化石墨烯/硝酸银复合薄膜。然后在600 ℃下通入氩气和氢气进行气氛还原得到石墨烯薄膜和石墨烯/银复合薄膜。采用AFM、SEM、XPS、UV-Vis以及四探针电阻仪等对薄膜结构及性质进行表征。结果表明，通过静电自组装法可以获得生长均匀的薄膜。对比于相同自组装次数的石墨烯薄膜，石墨烯/银复合薄膜具有更好的透光性和更低的薄膜方块电阻。在λ=500 nm时，四层石墨烯/银复合薄膜的透过率为85%左右，而石墨烯薄膜的透过率为72%左右；石墨烯薄膜的方阻为161.39 kΩ·□-1，而石墨烯/银复合薄膜的方阻为99.11 kΩ·□-1。 |
| 关键词: 石墨烯薄膜 石墨烯/银复合薄膜 静电自组装 气氛还原 |
| 基金项目: |
| Abstract: By alternating deposition of poly(diallyldimethylammonium chloride) (PDDA) or silver nitrate, and graphene oxide (GO) sheets via electrostatic self-assembly process, two self-assembled multiplayer films (GO/PDDA film and GO/AgNO3 composite film) are successfully prepared. In order to make the films electrically active, a reduction treatment involving the thermal annealing in Ar/H2 atmosphere at 600 ℃ are conducted. The films are studied by means of AFM, SEM, XPS, UV-Vis and four-probe resistance measurement instrument. The results show that these two kinds of films are surface uniform. And the graphene/Ag film has better optical properties and electrical properties. The transmittance of four layers graphene/Ag film is 85%, better than that of graphene film (72%); the sheet resistance of graphene/Ag film is 99.11 kΩ·□-1, which is lower than that of graphene film (161.39 kΩ·□-1). |
| Keywords: graphene film graphene/Ag film electrostatic self-assembly thermal reduction |
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| 周亚洲,杨 娟,孙 磊,赵 南,程晓农.石墨烯/银复合薄膜的制备及表征[J].无机化学学报,2012,28(1):137-142. |
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