Abnormal anti-oxidation behavior of hexagonal boron nitride grown on copper

查看全文 作　　者：Li [1,2]Wang;Jiajie [1]Qi;Shuai [3]Zhang;Mingchao [2]Ding;Wei [4]Wei;Jinhuan [1,5]Wang;Zhihong [1]Zhang;Ruixi [6]Qiao;Zhibin [1]Zhang;Zehui [1]Li;Kehai [7]Liu;Ying [7]Fu;Hao [1]Hong;Can [1]Liu;Muhong [6]Wu;Wenlong [2]Wang;Jun [8]He;Yi [4]Cui;Qunyang [3]Li;Xuedong [2,9]Bai;Kaihui [1,6]Liu

机构地区：[1]State Key Laboratory for Mesoscopic Physics,Frontiers Science Center for Nano-optoelectronics,School of Physics,Peking University,Beijing 100871,China;[2]Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;[3]Department of Engineering Mechanics,State Key Laboratory of Tribology,Tsinghua University,Beijing 100084,China;[4]Vacuum Interconnected Nanotech Workstation,Suzhou Institute of Nano-Tech and Nano-Bionics,Chinese Academy of Sciences,Suzhou 215123,China;[5]School of Chemistry and Chemical Engineering,Beijing Institute of Technology,Beijing 100081,China;[6]International Centre for Quantum Materials,Collaborative Innovation Centre of Quantum Matter,Peking University,Beijing 100871,China;[7]Songshan Lake Materials Laboratory,Institute of Physics,Chinese Academy of Sciences,Dongguan 523808,China;[8]CAS Center for Excellence in Nanoscience,CAS Key Laboratory of Nanosystem and Hierarchical Fabrication,National Center for Nanoscience and Technology,Beijing 100190,China;[9]School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Nano Research》索引2022年第15卷第8期,共7页

基　　金：the Guangdong Major Project of Basic and Applied Basic Research(2021B0301030002);the National Natural Science Foundation of China(Nos.52025023,51991342,52021006,11888101,12025203,and 12104493);the Key Research&Development Program of Guangdong Province(Nos.2020B010189001,2019B010931001,and 2018B030327001);the Strategic Priority Research Program of Chinese Academy of Sciences(Nos.XDB33000000 and XDB33030200);Beijing Natural Science Foundation(No.JQ19004);Natural Science Foundation of Jiangsu Province(No.BK20170426);the Initiative Program of State Key Laboratory of Tribology(No.SKLT2019B02);the National Key R&D Program of China(No.2018YFA0703700);Program from Chinese Academy of Sciences(No.E0K5231B11);the Pearl River Talent Recruitment Program of Guangdong Province(No.2019ZT08C321)。 摘　　要：Atomic-layered hexagonal boron nitride(hBN)is expected to be the best two-dimensional(2D)anti-oxidation layer on metals for its incomparable impermeability,insulativity,and stability,as well as the progressive bottom-up growth techniques to ensure fast coating on metal surface in large area.However,its real anti-oxidation ability in practice is found to be unsatisfactory and nonuniform,and the main obstacle to achieving ideal anti-oxidation performance lies in unclear anti-oxidation behavior at special interface between 2D hBN and three-dimensional(3D)metals.Herein,system of monolayer hBN grown on copper(Cu)foils with various lattice orientations was grown to investigate the anti-oxidation behavior of different interlayer configurations.By using structural characterizations together with analysis of topography,we surprisingly found that stronger interlayer coupling led to worse anti-oxidation performance owing to fast diffusion of O2 through higher hBN corrugations generated at the commensurate hBN/Cu(111)configuration.In view of this,we developed the approach of cyclic reannealing that can effectively flatten corrugations and steps,and therefore improve the anti-oxidation performance to a great extent.This work provides a more indepth understanding of anti-oxidation behavior of 2D materials grown on 3D metals,and a practical method to pave the way for its large-scale applications in future. 关键词：hexagonal boron nitride anti-oxidation of metals nanoscale corrugation cyclic reannealing method

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Abnormal anti-oxidation behavior of hexagonal boron nitride grown on copper

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