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Structural and optical properties of doped ZnO/SiO 2 nanocomposite
Author(s) -
Mohamed Mohamed Bakr,
AbdelKader Mohamed H.,
Alhazime Ali A.
Publication year - 2019
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.13156
Subject(s) - wurtzite crystal structure , materials science , crystallite , nanocomposite , scanning electron microscope , rietveld refinement , photoluminescence , doping , analytical chemistry (journal) , transmission electron microscopy , fourier transform infrared spectroscopy , nanoparticle , crystallography , nanotechnology , chemical engineering , crystal structure , optoelectronics , composite material , metallurgy , chemistry , chromatography , zinc , engineering
The synthesis of ZnO/SiO 2 nanocomposite doped with Co, Cu and Mn nanoparticles were performed using sol‐gel method. Rietveld refinement analysis was done for the X‐ray diffraction data and results showed that all samples are single wurtzite hexagonal phase and have an average crystallite size ~14 nm. The lattice parameters, bond length, crystallite size, microstrain, dislocation density and the system volume were studied in details. Transmission electron microscopy technique showed that nanoparticles characterized by an elliptical shape. Fourier transform infrared and scanning electron microscope techniques proved the presence of SiO 2 in the system. The energy gap values of both undoped and doped samples with Co, Mn and Cu were 2.84, 2.47, 2.71 and 2.8 eV , respectively. Photoluminescence spectra for undoped and doped ZnO/SiO 2 were investigated in details.