Abstract
In this paper, surface-conduction field emission (SCFE) device based on planar-gate triode with in-situ grown ZnO nanorods as the emitter has been fabricated. The ZnO nanorods are controlled to orientable grow by thermal evaporation on a substrate, and their microstructures are analyzed through XRD and SEM. The results show that the one-dimensional ZnO nanorods were rod-shaped, up to 200 nm in diameter and approximately 15 μm in length. They are of oriental growth, uniform in size and perpendicular to the substrate. With the screen-printing, a planar-gate surface conduction device is fabricated, and its field emission characteristics are tested. The test results indicate that the threshold voltage of the planar-gate ZnO-SCFE device decreases with the increase of the anode voltage. When the gate voltage is 62 V, the electron emission efficiency of the device is 36.1%, higher than the reported surface emission display (SED) emission efficiency. Besides, the proposed device has good modulated effect and stability, indicating that it is of good field emission characteristics.
Highlights
Surface-Conduction Electron-Emission (SCE) was discovered by scientists of the Soviet Union in the 1960s.1 To achieve surface conduction, it deposits a thin tin oxide film between two parallel electrodes, and the film exhibits a discontinuous particle state
In this paper, surface-conduction field emission (SCFE) device based on planar-gate triode with in-situ grown Zinc oxide (ZnO) nanorods as the emitter has been fabricated
The ZnO nanorods are controlled to orientable grow by thermal evaporation on a substrate, and their microstructures are analyzed through XRD and SEM
Summary
Surface-Conduction Electron-Emission (SCE) was discovered by scientists of the Soviet Union in the 1960s.1 To achieve surface conduction, it deposits a thin tin oxide film between two parallel electrodes, and the film exhibits a discontinuous particle state. In 2002, Lee et al. first studied the field emission properties of zinc oxide nanowires. They found that to get 0.1 μA/cm current density, it requires an approximately 6.0 V/μm applied electric field, and 1 mA/cm current density requires an 11.0 V/μm applied electric field. With the deepening of research, it has been found that ordered zinc oxide nanomaterials can effectively improve field emission properties.. Researchers have developed a variety of methods for fabricating one-dimensional zinc oxide nanomaterials with ordering growth, such as chemical vapor deposition, molecular beam epitaxy, thermal evaporation and chemical solutions. We fabricated the planar-gate ZnO surface-conducted field emission cathode and studied its field emission performance
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
