物理学报2017，Vol.66Issue(21)：79-87,9.DOI:10.7498/aps.66.217301
石墨烯纳米结构的制备及带隙调控研究
Fabrication of graphene nanostructure and bandgap tuning
摘要
Abstract
Graphene has potential applications in future microelectronics due to its novel electronic and mechanical properties.However,the lack of the bandgap in graphene poses a challenge and hinders its applications.In order to be able to work in ambient condition,gap engineering of graphene with nanostructure needs about sub-10 nm characteristic size,which increases the difficulty of fabrication and leads to less driving current that can be borne.In this paper,a new method to fabricate sub-10 nm graphene nanostructures is developed.With PMMA/Cr bilayer structure,sub-10 nm graphene nanostructures can be obtained precisely and repeatedly through controlling the etching time.Meanwhile,a new device based on graphene nanoconstrictions connected in parallel is designed and fabricated,whose band gap is bigger than that of graphene nanoribbon and whose characteristic width is the same as that of graphene nanoribbon.With the graphene nanoconstrictions connected in parallel,the band gap of the graphene can be adjusted effectively and the driving current can be significantly increased,which is very important for future practical applications of graphene.关键词
石墨烯/带隙调控/纳米结构Key words
graphene/bandgap tuning/nanostructures引用本文复制引用
张慧珍,李金涛,吕文刚,杨海方,唐成春,顾长志,李俊杰..石墨烯纳米结构的制备及带隙调控研究[J].物理学报,2017,66(21):79-87,9.基金项目
国家自然科学基金(批准号:61390503,91323304,11674387,11574385,11104334,11504414)和国家重点研发计划(批准号:2016YFA0200800,2016YFA0200400,2016YFB0100500)资助的课题.Project supported by the National Natural Science Foundation of China (Grant Nos.61390503,91323304,11674387,11574385,11104334,11504414) and the National Key R&D Program of China (Grant Nos.2016YFA0200800,2016YFA0200400,2016YFB0100500). （批准号:61390503,91323304,11674387,11574385,11104334,11504414）
