Fabrication, characterization and field emission properties of large-scale uniform ZnO nanotube arrays.
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).
Shen
Xiao-Ping
XP
State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, People's Republic of China.
Yuan
Ai-Hua
AH
Hu
Ye-Min
YM
Jiang
Yuan
Y
Xu
Zheng
Z
Hu
Zheng
Z