Efficient field emission from ZnO nanoneedle arrays
Top Cited Papers
- 30 June 2003
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 83 (1), 144-146
- https://doi.org/10.1063/1.1589166
Abstract
Well-aligned arrays of ZnO nanoneedles were fabricated using a simple vapor phase growth. The diameters of the nanoneedle tips are as small as several nanometers, which is highly in favor of the field emission. Field-emission measurements using the nanoneedle arrays as cathode showed emission current density as high as 2.4 mA/cm2 under the field of 7 V/μm, and a very low turn-on field of 2.4 V/μm. Such a high emission current density is attributed to the high aspect ratio of the nanoneedles. The high emission current density, high stability, and low turn-on field make the ZnO nanoneedle arrays one of the promising candidates for field-emission displays.This publication has 24 references indexed in Scilit:
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