Study of structural, optical and photoluminescence properties of Zn0.93Mg0.07O nanoparticles

7% Mg doped ZnO nanoparticles were synthesized using sol-gel route and characterized by powder X-ray diffraction, UV-Vis-NIR absorption and Photoluminescence spectroscopic measurements. Rietveld refinement of XRD pattern confirmed single phase formation of Mg doped ZnO in the wurtzite type hexagonal...

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Bibliographic Details
Main Authors: Bhoi, Himani, Punia, Khushboo, Lal, Ganesh, Kumar, Sudhish
Format: Conference Proceeding
Language:English
Subjects:
Absorption spectra
Annealing
Color temperature
Crystal defects
Diffraction patterns
Electromagnetic absorption
Emission analysis
Energy gap
Interstitials
Lattice vacancies
Magnesium
Nanoparticles
Optical properties
Photoluminescence
Sol-gel processes
Wurtzite
X ray powder diffraction
Zinc oxide
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Summary:7% Mg doped ZnO nanoparticles were synthesized using sol-gel route and characterized by powder X-ray diffraction, UV-Vis-NIR absorption and Photoluminescence spectroscopic measurements. Rietveld refinement of XRD pattern confirmed single phase formation of Mg doped ZnO in the wurtzite type hexagonal structure. The optical absorption spectra showed significant light absorption in the UV and visible regions. Band gap energy were estimated to be 2.99 (±0.2) eV and 2.82 (±0.3) eV for the as prepared and 4500C annealed Zn0.93Mg0.07O nanoparticles respectively. Photoluminescence spectrum of the two 7% Mg doped ZnO samples showed two characteristic UV and visible band emission peaks. PL analysis revealed that as prepared Zn0.93Mg0.07O dominantly emits in the red-orange region, while Zn0.93Mg0.07O annealed at 4500C emits more in the red region and presence of various types of lattice defects such as oxygen & zinc vacancies and interstitials.. The correlated color temperature was found to be ∼2935K.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0016970