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Home  >  Journal list  >  MATERIALS TRANSACTIONS  >  Vol.53  No.7 (2012)  >  pp.1353-1355

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Chestnut Bur-Like ZnO Crystals Synthesized by Solar Thermal Evaporation Technique

Min-Sung Kim1), Geun-Hyoung Lee2)
1) Department of Information & Communication Engineering, Tong-Myong University 2) Department of Materials & Components Engineering, Dong-Eui University

Chestnut bur-like zinc oxide crystals were synthesized by the thermal evaporation of zinc sulfide powder without the use of any catalyst. A magnifying lens was used to heat up the zinc sulfide powder. Thermal solar energy was concentrated on the zinc sulfide powder by the magnifying lens. Then the zinc sulfide powder was heated and evaporated within a relatively short time. The zinc sulfide vapor was oxidized in air and the chestnut bur-like zinc oxide crystals were formed. EDX spectrum revealed that the zinc oxide crystals had wurtzite hexagonal structure. A strong green emission was observed in cathodoluminescence spectrum. The thermal evaporation technique using solar energy is one of the techniques to reduce the energy consumption and costs.

zinc oxide crystal, chestnut bur shape, zinc sulfide powder, thermal evaporation, solar energy

Received: March 08, 2012
Accepted: April 27, 2012 , Published online: June 25, 2012
Copyright © 2012 The Japan Institute of Metals



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