Influence of Incorporation of Gallium Oxide Nanoparticles on the Structural and Optical Properties of Polyvinyl Alcohol Polymer

2021 ◽  
Author(s):  
Alaa M. Abd-Elnaiem ◽  
Taymour A. Hamdalla ◽  
Seleim M. Seleim ◽  
T. A. Hanafy ◽  
Meshari Aljouhani ◽  
...  
Keyword(s):  
Optical Properties ◽  
Polyvinyl Alcohol ◽  
Gallium Oxide ◽  
Oxide Nanoparticles ◽  
Structural And Optical Properties

scholarly journals Photoluminescence Activity of Neodymium-Doped Gallium Oxide Thin Films

2008 ◽  
Vol 1111 ◽  
Author(s):  
Celine Lecerf ◽  
Philippe Marie ◽  
Cedric Frilay ◽  
Julien Cardin ◽  
Xavier Portier
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Substrate Temperature ◽  
Gallium Oxide ◽  
Electronic Transitions ◽  
Oxide Thin Films ◽  
Structural And Optical Properties ◽  
Luminescence Efficiency

AbstractPhotoluminescence activity was observed for neodymium-doped gallium oxide thin films prepared by radiofrequency magnetron co-sputtering. Structural and optical properties of as-grown and annealed films were studied and photoluminescence activity was especially investigated. The most intense lines were associated to the 4F3/2  4I9/2 and 4F3/2  4I11/2 electronic transitions of Nd3+. The effects of deposition and treatment parameters such as the substrate temperature, the post anneal treatment or the neodymium content in the films were particularly examined with the aim to reach the best luminescence efficiency.

Influence of Incorporation of Gallium Oxide Nanoparticles on the Structural and Optical Properties of Polyvinyl Alcohol Polymer

2021 ◽  
Author(s):  
Alaa Abd-Elnaiem ◽  
Taymour Hamdalla ◽  
Seleim Seleim ◽  
T. Hanafy ◽  
Mushari Aljouhani ◽  
...  
Keyword(s):  
Refractive Index ◽  
Polyvinyl Alcohol ◽  
Gallium Oxide ◽  
Nonlinear Optical ◽  
Average Crystallite Size ◽  
Combustion Method ◽  
Oxide Nanoparticles ◽  
Optical Parameters ◽  
Casting Technique ◽  
Single Oscillator Model

Abstract In the present work, gallium oxide nanoparticles (nGa2O3) are synthesized via the thermal microwave combustion method, while nanocomposites of polyvinyl alcohol (PVA) polymer with various concentrations of nGa2O3 (0, 1, 2, 3, 4, and 5 wt%) are prepared by the casting technique. The structural characterization of nGa2O3, PVA, and films of PVA-Ga2O3 nanocomposites are studied using X-ray diffraction (XRD), High-resolution transmission electron microscopy (HRTEM), and Fourier-transform infrared spectroscopy. The HRTEM and XRD examinations showed that the prepared nGa2O3 has an average crystallite size of ~ 5.6 nm and particle size of ~ 0.9 µm. On another side, the optical transmission spectra were performed in the spectral range 250 to 2500 nm at room temperature. The refractive index, absorption coefficient, and optical bandgap (Eg) were determined using the Wemple-DiDomenico single oscillator model. It was shown that Eg slightly reduced from 3.61 to 3.55 eV with increasing the Ga2O3 content to 3 wt%, while raised again up to 3.58 eV for 5 wt% Ga2O3. Other optical characteristics such as the optical density, extinction coefficient, refractive index, optical susceptibility, thermal emissivity, optical sheet resistance for the PVA-Ga2O3 nanocomposites are investigated. The linear and nonlinear optical parameters together with their dependencies on the doping ratio reveals the qualification of PVA-Ga2O3 nanocomposites for nonlinear optical applications.

scholarly journals Structural and optical properties of pure and copper doped zinc oxide nanoparticles

2018 ◽  
Vol 9 ◽  
pp. 1301-1309 ◽  
Author(s):  
Muhammad Sajjad ◽  
Inam Ullah ◽  
M.I. Khan ◽  
Jamshid Khan ◽  
M. Yaqoob Khan ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Optical Properties ◽  
Zinc Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Structural And Optical Properties

Influence of annealing on the structural and optical properties of gallium oxide films deposited on c-sapphire substrate

Vacuum ◽  
2019 ◽  
Vol 167 ◽  
pp. 6-9 ◽  
Author(s):  
Jianwen Wu ◽  
Wei Mi ◽  
Zhengchun Yang ◽  
Yuting Chen ◽  
Peijun Li ◽  
...  
Keyword(s):  
Optical Properties ◽  
Sapphire Substrate ◽  
Gallium Oxide ◽  
Oxide Films ◽  
Structural And Optical Properties
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