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Effect of barium doping on structural and optical properties of zinc oxide nanoparticles synthesized by microwave hydrothermal method
Author(s) -
N'Konou Kekeli,
Haris Muthiah,
Lare Yendoubé,
Baneto Mazabalo,
Napo Kossi,
Torchio Philippe
Publication year - 2016
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201552177
Subject(s) - wurtzite crystal structure , crystallite , materials science , photoluminescence , raman spectroscopy , nanoparticle , barium , analytical chemistry (journal) , doping , zinc , hydrothermal circulation , impurity , fourier transform infrared spectroscopy , nanotechnology , chemical engineering , optics , chemistry , optoelectronics , physics , engineering , organic chemistry , chromatography , metallurgy
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.