个人简历 - 何 成
Paper Name | A tunable and sizable bandgap of a g-C3N4/graphene/g-C3N4 sandwich heterostructure:a van der Waals density functional study |
Author | M. M. Dong, C. He * and W. X. Zhang |
Publication/Completion Time | 2017-04-14 |
Magazine Name | J. Mater. Chem. C |
Vol | 5 |
Related articles | jmcc2017 (1).pdf |
Paper description | The structural and electronic properties of a g-C3N4/graphene/g-C3N4 (g-C3N4/SLG/g-C3N4) sandwich heterostructure have been systematically investigated using density functional theory with van der Waals corrections. The results indicate that the band gap of the g-C3N4/SLG/g-C3N4 sandwich heterostructure can be opened to 106 meV without strain. Applying strain is a promising way to tune the electronic properties of a sandwich heterostructure. After applying uniaxial strain, the heterostructure can withstand larger tensile strain than compression strain without damaging the structure and the band gap is more easily increased by the X-direction strain. When the 5% X-direction strain is applied, the band gap could be opened to 525 meV and meanwhile maintain a high carrier mobility. These electronic properties may provide a potential application in nanodevices. |