title: Effects of thermally-induced changes of Cu grains on domain structure and electrical performance of CVD-grown graphene.
abstract: During the chemical vapor deposition (CVD) growth of graphene on Cu foils, evaporation of Cu and changes in the dimensions of Cu grains in directions both parallel and perpendicular to the foils are induced by thermal effects. Such changes in the Cu foil could subsequently change the shape and distribution of individual graphene domains grown on the foil surface, and thus influence the domain structure and electrical properties of the resulting graphene films. Here, a slower cooling rate is used after the CVD process, and the graphene films are found to have an improved electrical performance, which is considered to be associated with the Cu surface evaporation and grain structure changes in the Cu substrate.
authors.affiliation: Fujian Provincial Key Laboratory of Semiconductors and Applications, Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Department of Physics, Xiamen University, Xiamen 361005, P. R. China. jykang@xmu.edu.cn and Department of Mechanical Engineering and the Materials Science and Engineering Program, The University of Texas at Austin, Austin, Texas 78712, USA. yh2682@columbia.edu ruofflab@gmail.com.
authors.forename: Yaping
authors.initials: Y
authors.lastname: Wu
authors.affiliation: Department of Mechanical Engineering and the Materials Science and Engineering Program, The University of Texas at Austin, Austin, Texas 78712, USA. yh2682@columbia.edu ruofflab@gmail.com and Department of Mechanical Engineering, Columbia University, New York, New York 10027, USA.
authors.forename: Yufeng
authors.initials: Y
authors.lastname: Hao
authors.affiliation: Fujian Provincial Key Laboratory of Semiconductors and Applications, Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Department of Physics, Xiamen University, Xiamen 361005, P. R. China. jykang@xmu.edu.cn.
authors.forename: Mingming
authors.initials: M
authors.lastname: Fu
authors.affiliation: Fujian Provincial Key Laboratory of Semiconductors and Applications, Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Department of Physics, Xiamen University, Xiamen 361005, P. R. China. jykang@xmu.edu.cn.
authors.forename: Wei
authors.initials: W
authors.lastname: Jiang
authors.affiliation: Department of Mechanical Engineering and the Materials Science and Engineering Program, The University of Texas at Austin, Austin, Texas 78712, USA. yh2682@columbia.edu ruofflab@gmail.com.
authors.forename: Qingzhi
authors.initials: Q
authors.lastname: Wu
authors.affiliation: Department of Materials Science and Engineering, the Pennsylvania State University, University Park, PA 16802, USA.
authors.forename: Peter A
authors.initials: PA
authors.lastname: Thrower
authors.affiliation: Department of Mechanical Engineering and the Materials Science and Engineering Program, The University of Texas at Austin, Austin, Texas 78712, USA. yh2682@columbia.edu ruofflab@gmail.com.
authors.forename: Richard D
authors.initials: RD
authors.lastname: Piner
authors.affiliation: Fujian Provincial Key Laboratory of Semiconductors and Applications, Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Department of Physics, Xiamen University, Xiamen 361005, P. R. China. jykang@xmu.edu.cn.
authors.forename: Congming
authors.initials: C
authors.lastname: Ke
authors.affiliation: Fujian Provincial Key Laboratory of Semiconductors and Applications, Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Department of Physics, Xiamen University, Xiamen 361005, P. R. China. jykang@xmu.edu.cn.
authors.forename: Zhiming
authors.initials: Z
authors.lastname: Wu
authors.affiliation: Fujian Provincial Key Laboratory of Semiconductors and Applications, Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Department of Physics, Xiamen University, Xiamen 361005, P. R. China. jykang@xmu.edu.cn.
authors.forename: Junyong
authors.initials: J
authors.lastname: Kang
authors.affiliation: Department of Mechanical Engineering and the Materials Science and Engineering Program, The University of Texas at Austin, Austin, Texas 78712, USA. yh2682@columbia.edu ruofflab@gmail.com and Center for Multidimensional Carbon Materials and Department of Chemistry and School of Materials Science Ulsan National Institute of Science and Technology (UNIST), Ulsan, 689-798, South Korea.
authors.forename: Rodney S
authors.initials: RS
authors.lastname: Ruoff