title: Study on the electron emission properties of ZnO nanorod arrays on different substrates.
abstract: Large area well-aligned ZnO nanorod arrays on different substrates were synthesized by hydrothermal methods. The electron emission properties of the ZnO nanorod arrays on different substrates were investigated under both direct current (DC) and pulse electric fields. Owing to the excellent conductivity of substrates, the array on stainless steel substrate had better electron emission properties than that on silicon substrate. Under the DC and pulse electric fields, the electron emission of arrays had different production mechanisms which were pure field emission and plasma-induced emission respectively. During the plasma-induced emission, the plasma formed on the array surface, and the maximum emission current density of arrays on stainless steel was 118.87 A/cm2. The plasma-induced emission of ZnO nanorod arrays were always distributed uniformly. In this work, the results show that the ZnO nanorod arrays are expected to be applied to different electronic devices as electron beam sources under different electric fields.
authors.affiliation: Department of Materials Physics and Chemistry, State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China.
authors.forename: Qingliang
authors.initials: Q
authors.lastname: Liao
authors.forename: Yunhua
authors.initials: Y
authors.lastname: Huang
authors.forename: Zi
authors.initials: Z
authors.lastname: Qin
authors.forename: Zheng
authors.initials: Z
authors.lastname: Zhang
authors.forename: Junjie
authors.initials: J
authors.lastname: Qi
authors.forename: Yue
authors.initials: Y
authors.lastname: Zhang
authors.forename: Liansheng
authors.initials: L
authors.lastname: Xia
mesh_terms: D004579:Electron Transport; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D015034:Zinc Oxide