期刊
NATURE COMMUNICATIONS
卷 5, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms4189
关键词
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资金
- Nebraska Public Power District through the Nebraska Center for Energy Sciences Research [12-00-13]
- Nebraska Research Initiative and the NSF through Nebraska MRSEC [DMR-0820521]
- EPSCoR [EPS-1004094]
- UNL UCARE programme
- EPSCoR [1004094] Funding Source: National Science Foundation
- Office Of The Director [1004094] Funding Source: National Science Foundation
According to theoretical studies, narrow graphene nanoribbons with atomically precise armchair edges and widths of <2 nm have a bandgap comparable to that in silicon (1.1 eV), which makes them potentially promising for logic applications. Different top-down fabrication approaches typically yield ribbons with width >10nm and have limited control over their edge structure. Here we demonstrate a novel bottom-up approach that yields gram quantities of high-aspect-ratio graphene nanoribbons, which are only similar to 1 nm wide and have atomically smooth armchair edges. These ribbons are shown to have a large electronic bandgap of similar to 1.3 eV, which is significantly higher than any value reported so far in experimental studies of graphene nanoribbons prepared by top-down approaches. These synthetic ribbons could have lengths of 4100 nm and self-assemble in highly ordered few-micrometer-long 'nanobelts' that can be visualized by conventional microscopy techniques, and potentially used for the fabrication of electronic devices.
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