Tunable band gap in half-fluorinated bilayer graphene under biaxial strains
Tunable band gap in half-fluorinated bilayer graphene under biaxial strains
复制标题
双轴应变下半氟化双层石墨烯的可调谐带隙
DOI:
10.1016/j.commatsci.2012.06.038
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发表时间:
2012-12
影响因子:
3.3
通讯作者:
Zhu, Z. Z.
中科院分区:
文献类型:
--
作者:
Hu, C. H.;Zhang, Y.;Liu, H. Y.;Wu, S. Q.;Yang, Y.;Zhu, Z. Z.
Opening and tuning of the band gap of bilayer graphene (BLG) is of particular importance for its utilization in nanoelectronics. We presented here the electronic structures of two types of stoichiometrically half-fluorinated BLGs (i.e. C2Fs) as well as those under biaxial compressive and tensile strains. Our results reveal that both C2Fs are semiconductor with large direct band gaps in their unstrained configurations. Under biaxial compressive strains, the band gaps of both C2Fs can be reduced. However, by applying biaxial tensile strains, both C2Fs undergo a direct-to-indirect band gap transition. Electronic nature of the strain-tuned band gaps has been discussed.
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通讯作者:
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