物理学报2012，Vol.61Issue(2)：400-404,5.
铂掺杂扶手椅型石墨烯纳米带的电学特性研究
Electrical properties of platinum doped armchair graphene nanoribbons
摘要
Abstract
The platinum-doped graphene has been achieved in our previous experiments.To further study the effects of metal doping on the band structures of graphene,and provide theoretical guidance for the next step of the experiment,we analyze the electronic properties of armchair graphene nanoribbons（AGNRs） with platinum atoms doping in the divacancy positions using first principle calculation based on density functional theory.The results show that the band structures of AGNRs can be effectively tailored by controlling the doping position on ribbons.Edge position is the most stable position for platinum atom.The band gaps of edge doped AGNRs can be shown in three curves like that of pristine AGNRs.However,they degenerate into two curves at large width,inhibiting the vibration of band gaps to some extent.In addition,several narrow platinum-doped AGNRs with width index N_a = 3_p and 3_p ＋ 1 have impurity level（s） in the band gap,reducing the large band gap effectively.Furthermore,band characteristics of platinum doped AGNRs are not sensitive to doping concentration,thus reducing the challenge of experimental precision.Our results will promote the application of graphene nanoribbons in the field of nano-electronics.关键词
扶手椅型石墨烯纳米带/铂/双空位/能带结构Key words
armchair graphene nanoribbon/platinum/divacancy/band structure分类
数理科学引用本文复制引用
许俊敏,胡小会,孙立涛..铂掺杂扶手椅型石墨烯纳米带的电学特性研究[J].物理学报,2012,61(2):400-404,5.基金项目
国家重点基础研究发展计划（973）项目 （）
国家自然科学基金 （）
教育部新世纪优秀人才支持计划 （）
博士点基金（批准号：20100HD92l10014）资助的课题~~ （）
