Effects of specimen preparation on the cathodoluminescence properties of ZnO nanoparticles

Dierre, B., Yuan, X. L., Obashi, N. and Sekiguchil, T. (2008) Effects of specimen preparation on the cathodoluminescence properties of ZnO nanoparticles. Journal of Applied Physics, 103 8: 083551-1-083551-5.


Author Dierre, B.
Yuan, X. L.
Obashi, N.
Sekiguchil, T.
Title Effects of specimen preparation on the cathodoluminescence properties of ZnO nanoparticles
Journal name Journal of Applied Physics  (ERA 2012 Listed)    (ERA 2010 Rank A)   Check publisher's open access policy
Publication date 2008-04-29
Sub-type Article
DOI 10.1063/1.2904858
Volume number 103
Issue number 8
ISSN 0021-8979
1089-7550
Start page 083551-1
End page 083551-5
Total pages 5
Place of publication Melville, New York, U.S.
Publisher American Institute of Physics
Language eng
Subject 291804 Nanotechnology
Abstract To establish a reliable procedure for the characterization of luminescence from nanomaterials, the cathodoluminescence (CL) observation conditions, such as the packing density of particles and the electron beam energy for irradiation, were examined by using ZnO nanoparticles. The evolutions of the intensities and peak position with the accelerating voltage are strongly affected by the packing density of particles. For the low-density specimen, the band edge emission reaches a maximum at 4 kV where the excitation of each nanoparticle becomes the most effective. On the other hand, the position of band edge emission does not shift for low-density specimen while it changes for high-density specimen. Such artifact may bring serious modifications to the CL data. This work suggests that the specimen preparation and the optimum excitation conditions are the keys for the reliable CL characterization of nanomaterials.
Keyword Cathodoluminescence (CL)
II-VI semiconductors
Nanoparticles
Wide band gap semiconductors
Zinc compounds
Q-Index Code C1
Additional Notes Vol: 083551(online)

 
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Created: Wed, 13 Jan 2010, 15:37:19 EST by Rosalind Blair on behalf of Sustainable Minerals Institute