| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1685279 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2007 | 4 Pages |
Abstract
The secondary electron emission (SEE) yield of heterostructures of zinc oxide (ZnO) nanoneedles coaxially coated with aluminum nitride (AlN) or gallium nitride (GaN) has been studied using ion and X-ray beams. This paper describes experiments performed with ions (2Â MeV protons and 3.6Â MeV/nucleon carbon beams) and photons (synchrotron radiation at â1Â keV). The SEE yield of the heterostructures is enhanced significantly by the intrinsic nanostructure of the ZnO nanoneedle templates as compared to the AlN and GaN thin films on silicon (Si) substrates [T.J. Vink, R.G.F.A. Verbeek, V. Elsbergen, P.K. Bachmann, Appl. Phys. Lett. 83 (2003) 2285]. One of the mechanisms responsible for SEE yield enhancement can be attributed to the larger area of the nanostructured surface.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
M. Cholewa, H.O. Moser, Lie Huang, Shu Ping Lau, Jinkyoung Yoo, Sung Jin An, Gyu-Chul Yi, Gao Xingyu, A.T.S. Wee, A. Bettiol, F. Watt, B. Fischer,