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Secondary emission of nanocrystalline zinc oxide

Gorelik, V.S., Mikov, S.N., Sokolovskii, M.I. and Tsuzuki, Takuya 2006, Secondary emission of nanocrystalline zinc oxide, Inorganic materials, vol. 42, no. 3, pp. 282-285.

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Title Secondary emission of nanocrystalline zinc oxide
Author(s) Gorelik, V.S.
Mikov, S.N.
Sokolovskii, M.I.
Tsuzuki, Takuya
Journal name Inorganic materials
Volume number 42
Issue number 3
Start page 282
End page 285
Publisher MAIK Nauka- Interperiodica
Place of publication Moscow, Russian Federation
Publication date 2006-03
ISSN 0020-1685
1608-3172
0869-5784
Summary The Raman and photoluminescence (PL) spectra of nanocrystalline zinc oxide produced by mechanochemical synthesis were measured using a pulsed nitrogen laser (337.1 nm) and xenon lamp (360 nm) as excitation sources in PL measurements and a cw Nd:YAG laser in Raman measurements. PL was observed in the range 400–800 nm. The Raman spectrum of nanocrystalline (90 nm) ZnO was compared to that of coarsegrained ZnO. The Raman bands of nanocrystalline zinc oxide were found to be shifted to lower frequencies and broadened. Laser radiation was shown to cause local heating of zinc oxide up to 1000 K, resulting in photoinduced formation of zinc nanoclusters. Mixtures of zinc oxide and sodium chloride powders are heated to substantially lower temperatures. Under nitrogen laser excitation, the green PL band (535 nm), characteristic of bulk ZnO, is shifted to longer wavelengths by 85 nm. The results are interpreted in terms of light confinement in zinc oxide microclusters consisting of large number of nanocrystallites. The photoinduced processes in question may be a viable approach to producing metal-insulator structures in globular photonic crystals, opals, filled with zinc oxide.
Language eng
Field of Research 100708 Nanomaterials
Socio Economic Objective 970110 Expanding Knowledge in Technology
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2006, MAIK Nauka- Interperiodica
Persistent URL http://hdl.handle.net/10536/DRO/DU:30022530

Document type: Journal Article
Collections: Centre for Material and Fibre Innovation
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.