期刊
ACS NANO
卷 7, 期 5, 页码 3823-3832出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn400780x
关键词
graphene; Ir(111); hydrogen; XPS; DFT
类别
资金
- European Research Council under ERC [208344]
- Danish Council for Independent Research, Natural Sciences
- Danish Council for Independent Research, Technology and Production Sciences
- Lundbeck Foundation
- MIUR
- COST Action [MP0901]
- European Research Council (ERC) [208344] Funding Source: European Research Council (ERC)
Combined fast X-ray photoelectron spectroscopy and density functional theory calculations reveal the presence of two types of hydrogen adsorbate structures at the graphene/Ir(111) interface, namely, graphane-like islands and hydrogen dimer structures. While the former give rise to a periodic pattern, dimers tend to destroy the periodicity. Our data reveal distinctive growth rates and stability of both types of structures, thereby allowing one to obtain well-defined patterns of hydrogen clusters. The ability to control and manipulate the formation and size of hydrogen structures on graphene facilitates tailoring of its properties for a wide range of applications by means of covalent functionalization.
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