Effect of barium doping on structural and optical properties of zinc oxide nanoparticles synthesized by microwave hydrothermal method

Undoped and Ba‐doped ZnO nanoparticles were successfully synthesized using microwave hydrothermal method. The influence of Barium concentration on physical and optical properties of ZnO nanoparticles was investigated. X‐Ray Diffraction (XRD) analysis revealed that the synthesized ZnO nanoparticles a...

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Bibliographic Details
Published in:physica status solidi (b) 2016-02, Vol.253 (2), p.260-266
Main Authors: N'Konou, Kekeli, Haris, Muthiah, Lare, Yendoubé, Baneto, Mazabalo, Napo, Kossi, Torchio, Philippe
Format: Article
Language:English
Subjects:
Ba doping
Engineering Sciences
Micro and nanotechnologies
Microelectronics
microwave hydrothermal method
nanoparticles
Raman spectroscopy
ZnO
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Summary:Undoped and Ba‐doped ZnO nanoparticles were successfully synthesized using microwave hydrothermal method. The influence of Barium concentration on physical and optical properties of ZnO nanoparticles was investigated. X‐Ray Diffraction (XRD) analysis revealed that the synthesized ZnO nanoparticles are polycrystalline with hexagonal wurtzite crystal structure and their average crystallite sizes are found to vary from 20 to 21.5 nm in diameter. The SEM images showed that surface morphology of the samples was influenced by the presence of Ba impurities. Ultraviolet and green emission bands around 415 and 603 nm, respectively were observed in photoluminescence spectra for all samples. The FTIR spectra indicated the presence of the distinct characteristic absorption peak at 489 cm−1 for Zn–O stretching modes. Raman spectra exhibited the presence of an intense peak around 437 cm−1 followed by a peak around 586 cm−1 in the higher wave number region.
ISSN:0370-1972
1521-3951
DOI:10.1002/pssb.201552177