Triphenylene adsorption on Cu(111) and relevant graphene self-assembly  

作　　者：Qiao-Yue Chen Jun-Jie Song Liwei Jing Kaikai Huang Pimo He Hanjie Zhang 陈乔悦;宋俊杰;井立威;黄凯凯;何丕模;张寒洁(Zhejiang Province Key Laboratory of Quantum Technology and Device,Department of Physics,Zhejiang University,Hangzhou 310027,China;Collaborative Innovation Center of Advanced Microstructure,Nanjing University,Nanjing 210093,China;Department of Fundamental and Social Science,Zhejiang University of Water Resources and Electric Power,Hangzhou 310018,China)

机构地区：[1]Zhejiang Province Key Laboratory of Quantum Technology and Device,Department of Physics,Zhejiang University,Hangzhou 310027,China [2]Collaborative Innovation Center of Advanced Microstructure,Nanjing University,Nanjing 210093,China [3]Department of Fundamental and Social Science,Zhejiang University of Water Resources and Electric Power,Hangzhou 310018,China

出　　处：《Chinese Physics B》2020年第2期401-406,共6页中国物理B（英文版）

基　　金：Project supported by the National Key Research and Development Program of China(Grant No.2017YFB0503100);the National Natural Science Foundation of China(Grant No.11790313).

摘　　要：Investigations on adsorption behavior of triphenylene(TP) and subsequent graphene self-assembly on Cu(111) were carried out mainly by using scanning tunneling microscopy(STM).At monolayer coverage,TP molecules formed a longrange ordered adsorption structure on Cu(111) with an uniform orientation.Graphene self-assembly on the Cu(111) substrate with TP molecules as precursor was achieved by annealing the sample,and a large-scale graphene overlayer was successfully captured after the sample annealing up to 1000 K.Three different Moire patterns generated from relative rotational disorders between the graphene overlayer and the Cu(111) substrate were observed,one with 40 rotation between the graphene overlayer and the Cu(111) substrate with a periodicity of 2.93 nm,another with 70 rotation and 2.15 nm of the size of the Moire supercell,and the third with 100 rotation with a periodicity of 1.35 nm.Investigations on adsorption behavior of triphenylene(TP)and subsequent graphene self-assembly on Cu(111)were carried out mainly by using scanning tunneling microscopy(STM).At monolayer coverage,TP molecules formed a long-range ordered adsorption structure on Cu(111)with an uniform orientation.Graphene self-assembly on the Cu(111)substrate with TP molecules as precursor was achieved by annealing the sample,and a large-scale graphene overlayer was successfully captured after the sample annealing up to 1000 K.Three different Moirépatterns generated from relative rotational disorders between the graphene overlayer and the Cu(111)substrate were observed,one with 4°rotation between the graphene overlayer and the Cu(111)substrate with a periodicity of 2.93 nm,another with 7°rotation and 2.15 nm of the size of the Moirésupercell,and the third with 10°rotation with a periodicity of 1.35 nm.

关 键 词：TRIPHENYLENE GRAPHENE CU(111) scanning TUNNELING microscopy 

分 类 号：TQ127.11[化学工程—无机化工] O647.3[理学—物理化学]