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Effect of source temperature on the morphology and photoluminescence properties of ZnO nanostructures

✍ Scribed by Khalifa Al-Azri; Roslan Md Nor; Y.M. Amin; Majid. S. Al-Ruqeishi

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
386 KB
Volume
256
Category
Article
ISSN
0169-4332

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✦ Synopsis

ZnO nanostructures have been synthesized by heating a mixture of ZnO/graphite powders using the thermal evaporation and vapor transport on Si(1 0 0) substrates without any catalyst and at atmospheric argon pressure. The influence of the source temperature on the morphology and luminescence properties of ZnO nanostructures has been investigated. ZnO nanowires, nanoflowres and nanotetrapods have been formed upon the Si(1 0 0) substrates at different source temperatures ranging from 1100 to 1200 β€’ C. Room temperature photoluminescence (PL) spectra showed increase green emission intensity as the source temperature was decreased and ZnO nanowires had the strongest intensity of UV emission compared with other nanostructures. In addition, the growth mechanism of the ZnO nanostructures is discussed based on the reaction conditions.

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