期刊
JOURNAL OF MATERIALS CHEMISTRY
卷 22, 期 37, 页码 19679-19683出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2jm33209d
关键词
-
资金
- National Basic Research Program of China [2009CB930600, 2012CB933301]
- Ministry of Education of China [IRT1148]
- Priority Academic Program Development of Jiangsu Higher Education Institutions, NSFC [20833002, 20903057, 20905038, 20974046]
- Key Projects for International Cooperation [BZ2010043]
- RFDP [20093223120002]
- Jiangsu Provincial NSF [BK2010525, BK2011750]
Despite amorphous graphene (a-graphene) domains having been created and observed within crystalline graphene, large-area synthesis is still in its infancy. Here, using MgO single crystals as a catalytic substrate, large-area (10 x 5 mm) undoped and nitrogen-doped a-graphene were synthesized by chemical vapor deposition with benzene and pyridine as precursors, respectively. The dependence of the number of layers and the crystallinity of a-graphene on the growth temperature was observed by transmission electron microscopy, selected area electron diffraction and Raman spectroscopy. Few-layer (2-5 layers) a-graphene films are demonstrated to have high transmittance (>85% at 550 nm) and low conductivity (< 1 x 10(-3) S cm(-1)). When doped with nitrogen (N/C ratio = similar to 0.09), the conductivity of the a-graphene film could be increased. The preparation of large-area a-graphene films not only extends to two-dimensional carbon materials but also might provide building blocks for future all-carbon devices.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据