石墨烯/银复合薄膜的制备及表征  

Synthesis and Characterization of Graphene/Ag Composite Films

作　　者：周亚洲[1] 杨娟[1] 孙磊[1] 赵南[1] 程晓农[1] 

机构地区：[1]江苏大学材料科学与工程学院,镇江212013

出　　处：《无机化学学报》2012年第1期137-142,共6页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.50902061);江苏省六大人才高峰项目(D类)资助项目

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。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. Thefilms 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 99.11kΩ·□^-1, which is lower than that of graphene film （161.39kΩ·□^-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 

分 类 号：TB43[一般工业技术]