title: A Ternary Alloy Substrate to Synthesize Monolayer Graphene with Liquid Carbon Precursor.
abstract: Here we demonstrate a ternary Cu2NiZn alloy substrate for controllably synthesizing monolayer graphene using a liquid carbon precursor cyclohexane via a facile CVD route. In contrast with elemental metal or bimetal substrates, the alloy-induced synergistic effects that provide an ideal metallic platform for much easier dehydrogenation of hydrocarbon molecules, more reasonable strength of adsorption energy of carbon monomer on surface and lower formation energies of carbon chains, largely renders the success growth of monolayer graphene with higher electrical mobility and lower defects. The growth mechanism is systemically investigated by our DFT calculations. This study provides a selective route for realizing high-quality graphene monolayer via a scalable synthetic method by using economic liquid carbon supplies and multialloy metal substrates.
authors.affiliation: National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China , Hefei, Anhui 230029, PR China.
authors.forename: Wei
authors.initials: W
authors.lastname: Gan
authors.affiliation: Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, Dalian University of Technology , Ministry of Education, Dalian 116024, PR China.
authors.forename: Nannan
authors.initials: N
authors.lastname: Han
authors.affiliation: National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China , Hefei, Anhui 230029, PR China.
authors.forename: Chao
authors.initials: C
authors.lastname: Yang
authors.affiliation: National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China , Hefei, Anhui 230029, PR China.
authors.forename: Peng
authors.initials: P
authors.lastname: Wu
authors.affiliation: National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China , Hefei, Anhui 230029, PR China.
authors.forename: Qin
authors.initials: Q
authors.lastname: Liu
authors.affiliation: National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China , Hefei, Anhui 230029, PR China.
authors.forename: Wen
authors.initials: W
authors.lastname: Zhu
authors.affiliation: National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China , Hefei, Anhui 230029, PR China.
authors.forename: Shuangming
authors.initials: S
authors.lastname: Chen
authors.affiliation: National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China , Hefei, Anhui 230029, PR China.
authors.forename: Chuanqiang
authors.initials: C
authors.lastname: Wu
authors.affiliation: National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China , Hefei, Anhui 230029, PR China.
authors.forename: Muhammad
authors.initials: M
authors.lastname: Habib
authors.affiliation: National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China , Hefei, Anhui 230029, PR China.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Sang
authors.affiliation: National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China , Hefei, Anhui 230029, PR China.
authors.forename: Zahir
authors.initials: Z
authors.lastname: Muhammad
authors.affiliation: Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, Dalian University of Technology , Ministry of Education, Dalian 116024, PR China.
authors.forename: Jijun
authors.initials: J
authors.lastname: Zhao
authors.affiliation: National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China , Hefei, Anhui 230029, PR China.
authors.forename: Li
authors.identifier: 0000-0003-0585-8519
authors.initials: L
authors.lastname: Song
keywords: alloy; chemical vapor deposition; density functional theory; graphene; growth mechanism