The influence of annealing temperature on the structure, morphologies and optical properties of ZnO nanoparticles

ZnO nanoparticles (NPs) have been successfully synthesized by the simple solution method at low temperature. The effects of annealing temperature on the structure and optical properties of ZnO NPs were investigated in detail by X-ray diffraction, transmission electron microscopy (TEM), ultraviolet–v...

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Bibliographic Details
Published in:Superlattices and microstructures 2010-02, Vol.47 (2), p.335-340
Main Authors: Hammad, Talaat M., Salem, Jamil K., Harrison, Roger G.
Format: Article
Language:English
Subjects:
Annealing
Morphologies
Optical
ZnO nanoparticles
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Summary:ZnO nanoparticles (NPs) have been successfully synthesized by the simple solution method at low temperature. The effects of annealing temperature on the structure and optical properties of ZnO NPs were investigated in detail by X-ray diffraction, transmission electron microscopy (TEM), ultraviolet–visible (UV–vis) spectroscopy and photoluminescence (PL) measurements. As the annealing temperature was increased above 180  ∘C the particles morphology evolved from spherical to hexagonal shape, indicating that the average particle size increased from 11 nm to 87 nm. The UV-vis and PL spectra showed a red-shift from 3.62 to 3.33 eV when the annealing temperature was increased.
ISSN:0749-6036
1096-3677
DOI:10.1016/j.spmi.2009.11.007