Applied physics letters, 2014-12, Vol.105 (23)
2014
Volltextzugriff (PDF)
Details
- Autor(en) / Beteiligte
- Titel
- Field emission properties of ZnO nanosheet arrays
- Ist Teil von
- Applied physics letters, 2014-12, Vol.105 (23)
- Ort / Verlag
- Melville: American Institute of Physics
- Erscheinungsjahr
- 2014
- Quelle
- AIP Journals
- Beschreibungen/Notizen
- Electron emission properties of electrodeposited ZnO nanosheet arrays grown on Indium tin oxide coated glass substrates have been studied. Influence of oxygen vacancies on electronic structures and field emission properties of ZnO nanosheets are investigated using density functional theory. The oxygen vacancies produce unshared d electrons which form an impurity energy state; this causes shifting of Fermi level towards the vacuum, and so the barrier energy for electron extraction reduces. The ZnO nanosheet arrays exhibit a low turn-on field of 2.4 V/μm at 0.1 μA/cm2 and current density of 50.1 μA/cm2 at an applied field of 6.4 V/μm with field enhancement factor, β = 5812 and good field emission current stability. The nanosheet arrays grown by a facile electrodeposition process have great potential as robust high performance vertical structure electron emitters for future flat panel displays and vacuum electronic device applications.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 0003-6951eISSN: 1077-3118DOI: 10.1063/1.4903271Titel-ID: cdi_osti_scitechconnect_22395490
- Format
- –
- Schlagworte
- Applied physics, Arrays, Coated electrodes, CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY, CURRENT DENSITY, DENSITY FUNCTIONAL METHOD, Density functional theory, DIFFUSION BARRIERS, ELECTRODEPOSITION, ELECTRON EMISSION, ELECTRONIC STRUCTURE, ELECTRONS, Emission analysis, Emitters (electron), FERMI LEVEL, FIELD EMISSION, Flat panel displays, Glass substrates, INDIUM COMPOUNDS, Indium tin oxides, Nanosheets, NANOSTRUCTURES, OXYGEN, POTENTIALS, Properties (attributes), SHEETS, SUBSTRATES, TIN OXIDES, VACANCIES, Zinc oxide, ZINC OXIDES