多孔石墨烯纳米片电学性质的研究  

Electronic properties of holey graphene nanosheets

作　　者：梁飞霞 杨凯琳 李有丽 卢文婷 LIANG Fei-Xia;YANG Kai-Lin;LI You-Li;LU Wen-Ting(Department of Physics,Taiyuan Normal University,Jinzhong 030619,China)

机构地区：[1]太原师范学院物理系,晋中030619

出　　处：《原子与分子物理学报》2023年第2期73-76,共4页Journal of Atomic and Molecular Physics

基　　金：山西省高等学校科技创新项目(2020L0514);山西省基础研究计划项目(202103021223319)。

摘　　要：采用紧束缚近似方法,研究了三角形锯齿型石墨烯纳米片(Triangular zigzag graphene nanosheets,TZGN)的电子结构.研究表明单孔TZGN结构的零能级都是外边缘态,跟孔的大小没有关系.多孔TZGN结构受孔间结构的影响,零能级会随着孔数目的增加逐渐出现内外边缘耦合态,导带和价带能级个数也会随着孔的大小和孔的数量的增加而减少.研究结果拓宽了石墨烯纳米结构在纳机电器件方面的应用.Using the tight-binding Hamiltonian model,the electronic properties of triangular zigzag graphene nanosheets(TZGN)were investigated.It is found that the zero energy levels of the single-hole TZGN are outer-edge state,while those of the holey TZGN are affected by the coupling of holes.The number of zero energy levels occurs inner-outer edge coupling states.The number of conduction and valence bands will decrease as the size and number of holes increase.It broadens the application of graphene nanosheets in nano electro-mechanic device.

关 键 词：石墨烯纳米片 电子结构 紧束缚近似 

分 类 号：O472[理学—半导体物理]