TITLE:
Morphology and Field Emission of ZnO Nanomaterials at Different Positions
AUTHORS:
Junzheng Wang, Lijun Wang
KEYWORDS:
Field Emission, ZnO Films, Vacuum Electron Beam Vapor Deposition
JOURNAL NAME:
Journal of Applied Mathematics and Physics,
Vol.10 No.4,
April
6,
2022
ABSTRACT: By simply adjusting the temperature and the number of materials, rod-like ZnO with different morphology, such as ZnO nanoneedles, were synthesized by a flexible thermal evaporation method. The ZnO nanorod array has the lowest turn-on field, the highest current density, and the highest emission efficiency due to its good contact with the substrate and relatively weak field shielding effect. Experiments show that the morphology and orientation of one-dimensional ZnO nanomaterials have a great influence on its conduction field and emission current density, and the nanoarrays also contribute to electron emission. The research results have a certain reference value for the application of ZnO nanorod arrays as cathode materials for field emission devices.