Efficient Preparation of Large-Area Graphene Oxide Sheets for Transparent Conductive Films

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	Efficient Preparation of Large-Area Graphene Oxide Sheets for Transparent Conductive Films
	J. P. Zhao; S. F. Pei; W. C. Ren; L. B. Gao; H. M. Cheng
	2010
发表期刊	Acs Nano
ISSN	1936-0851
卷号	4 期号:9 页码:5245-5252
摘要	Large-area sheets are highly desirable for fundamental research and technological applications of graphene. Here we introduce a modified chemical exfoliation technique to prepare large-area graphene oxide (GO) sheets. The maximum area of the GO sheets obtained can reach similar to 40000 mu m(2). We found that the GO area is strongly correlated with the C-O content of the graphite oxide, which enables the area of the synthesized GO sheets to be controlled. By simply changing oxidation conditions, GO sheets with an average area of ca. 100-300, ca. 1000-3000, and similar to 7000 mu m(2) were selectively synthesized. For transparent conductive film applications, thin GO films were fabricated by self-assembly on a liquid/air interface and reduced by HI acid. We found that the sheet resistance of the reduced GO (rGO) films decreases with increasing sheet area at the same transmittance because of the decrease in the number of intersheet tunneling barriers. The rGO film made from GO sheets with an average area of similar to 7000 mu m(2) shows a sheet resistance of 840 Omega/sq at 78% transmittance, which is much lower than that (19.1 k Omega/sq at 79% transmittance) of a rGO film made from small-area GO sheets of ca. 100-300 mu m(2), and comparable to that of graphene films grown on Ni by chemical vapor deposition.
部门归属	[zhao, jinping; pei, songfeng; ren, wencai; gao, libo; cheng, hui-ming] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;ren, wc (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;wcren@imr.ac.cn cheng@imr.ac.cn
关键词	Graphene Large Area Size Control Reduction Transparent Conductive Film Chemical-vapor-deposition Exfoliated Graphite Oxide Aqueous Dispersions Ultrathin Films High-quality Reduction Carbon Layers Electrodes Nanosheets
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WOS记录号	WOS:000282121000037
引用统计	被引频次：789[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31739
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. P. Zhao,S. F. Pei,W. C. Ren,et al. Efficient Preparation of Large-Area Graphene Oxide Sheets for Transparent Conductive Films[J]. Acs Nano,2010,4(9):5245-5252.
APA	J. P. Zhao,S. F. Pei,W. C. Ren,L. B. Gao,&H. M. Cheng.(2010).Efficient Preparation of Large-Area Graphene Oxide Sheets for Transparent Conductive Films.Acs Nano,4(9),5245-5252.
MLA	J. P. Zhao,et al."Efficient Preparation of Large-Area Graphene Oxide Sheets for Transparent Conductive Films".Acs Nano 4.9(2010):5245-5252.