title: Fabrication, characterization and field emission properties of large-scale uniform ZnO nanotube arrays.
abstract: Large-scale well-aligned ZnO nanotubes with outer diameters of 100-300 nm and lengths of tens of micrometres have been prepared by a template-based chemical vapour deposition method. The photoluminescence spectrum of the ZnO nanotube arrays consists of a strong violet band at 414 nm, a blue band at 462 nm and a weak shoulder peak at around 480 nm. The field emission of the ZnO nanotube arrays shows a turn-on field of about 7.3 V microm(-1) at a current density of 0.1 microA cm(-2) and emission current density up to 1.3 mA cm(-2) at a bias field of 11.8 V microm(-1).
authors.affiliation: State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, People's Republic of China.
authors.forename: Xiao-Ping
authors.initials: XP
authors.lastname: Shen
authors.forename: Ai-Hua
authors.initials: AH
authors.lastname: Yuan
authors.forename: Ye-Min
authors.initials: YM
authors.lastname: Hu
authors.forename: Yuan
authors.initials: Y
authors.lastname: Jiang
authors.forename: Zheng
authors.initials: Z
authors.lastname: Xu
authors.forename: Zheng
authors.initials: Z
authors.lastname: Hu