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The ZnO thin films were deposited by spray pyrolysis technique on glass substrate heated at 450° C, using as source zinc acetate with a molar concentration of 0.05 mol/l. Our interest is to study in some details the effect of doping Gd:ZnO (GZO) and co-doping Gd,Li:ZnO (GLZO) on optical properties. For this, we have used the optical UV-Visible spectroscopy to determine the band gap energy of the samples...
In this study, we compare the structural properties of the three phases wurtzite (B4), zinc blende (B3), and rocksalt (B1) of ZnO using the generalized gradient approximation (GGA) and the modified Becke-Johnson TB-mBJ potential to compare their electronic and optical properties. It's found that the wurtzite phase is energetically the most stable. Zinc blende and wurtzite structures show similar electronic...
In the present study the results of an ab-initio theoretical study of the electronic structural and optical properties corrected by scissor of zinc oxide in wurtzite phase using an implementation of the FP method(L) APW in the framework of the density functional theory (DFT); the potential for exchange and correlation is treated within the generalized gradient approximation of the Engel-Vosko GGA-EV...
Gallium doped zinc oxide, GZO, thin films have been deposited onto glass substrate by RF magnetron sputtering at various substrate temperatures. The electrical and optical properties of the thin films have been studied as a function of substrate temperature. X-ray diffraction was used in order to investigate thin film structures. The thin film structure was stabilised by heating the samples in air...
In this paper, we report the optical properties of magnesium (Mg)-substituted zinc oxide (ZnO) (Zn1-xMgxO) nanoparticles (diameter ≤ 20 nm). The ZnO and alloyed nanoparticles were synthesized by chemical route and have Wurzite structure. The maximum Mg substitution reported here is ≈7.5%. This leads to a blue shift of the absorption spectra by 0.5 eV as well as a blue shift of the near-band edge photo...
The optical absorption of an ultra-thin active layer solar cell can be significantly increased by engineering properly both the in plane patterning of the active layer and the vertical stack. This structuration both controls incident light coupling into slow light modes of the photonic crystals and photon lifetime in the absorbing material. Numerical results on optical and electrical properties will...
This study presents result of the optical properties of Zinc Oxide (ZnO) thin film using glass substrate. All the substrate was clean used Acetone, methanol and hydrofluoric acid (HF). Sol-gel method used to prepared Nanostructured ZnO thin film. The precursors used Zinc Acetate, Ethanolamine as a stabilizer and 2-Methoxyethanol as solvents. 10 layers was deposited onto glass substrate by used spin-coating...
The present study focuses on the structural and optical properties of thin films of ZnO/PMMA nanocomposite deposited on glass substrate using a colloidal solution and spin-coating technique. XRD study reveals that the ZnO particles in amorphous PMMA host matrix have hexagonal (wurtzite) structure and they have arbitrary orientation. Optical absorption spectrum shows three bands in the UV-Visible area...
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