期刊
JOURNAL OF MATERIALS CHEMISTRY
卷 22, 期 19, 页码 10062-10068出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2jm30915g
关键词
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资金
- Specialized Research Fund for the Doctoral Program of Higher Education [20090121120028, 20100121120026]
- Natural Science Foundation of Fujian Province, China [2010J05138]
- Program for New Century Excellent Talents in University (NCET) [NCET-09-0680]
- Soft Science Foundation of Fujian Province, China [2011R0088]
We have calculated the electronic properties of graphene and SiC, GeC and SnC monolayers in a two-dimensional graphene-like honeycomb structure under various strained conditions using first principles calculations based on density functional theory and the quasiparticle GW approximation. Our results show that the indirect-direct band gap transition of group-IV carbides can be tuned by strain, which indicates a possible new route for tailoring the electronic properties of ultrathin nanofilms through strain engineering.
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