| Project/Area Number |
18J12739
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| Research Category |
Grant-in-Aid for JSPS Fellows
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| Allocation Type | Single-year Grants |
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| Section | 国内 |
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| Research Field |
Mathematical physics/Fundamental condensed matter physics
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| Research Institution | University of Tsukuba |
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Principal Investigator |
GAO YANLIN 筑波大学, 数理物質科学研究科, 特別研究員(DC2)
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| Project Period (FY) |
2018-04-25 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 2018: ¥1,100,000 (Direct Cost: ¥1,100,000)
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| Keywords | Graphene / Field emission / DFT / Edge shape / Edge functionalization |
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| Outline of Annual Research Achievements |
I studied electronic properties of graphene edges under an external electric field to provide the microscopic mechanisms on the field emission (FE) properties from graphene edge in terms of the edge shape and functionalization, using the DFT combined with effective screening medium method. My calculations clarified that the FE properties of graphene are sensitive to the edge shapes and functionalization. As for the edge shape, the armchair edge shows the largest emission current among all edge shapes. As for the edge functionalization, the graphene edges functionalized by H, OH, and COOH cause relatively large emission current for a wide range of the electric field due to the decrease in the electrostatic potential barriers caused by the dipoles at the edge.
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| Research Progress Status |
翌年度、交付申請を辞退するため、記入しない。
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| Strategy for Future Research Activity |
翌年度、交付申請を辞退するため、記入しない。
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