scholarly journals Laser induced plasma of cadmium oxide: structural, morphological and optical properties

2021 ◽  
Vol 2114 (1) ◽  
pp. 012012
Author(s):  
Tamara S. Hussein ◽  
Ala F. Ahmed
Keyword(s):  
Optical Properties ◽  
Energy Gap ◽  
Cadmium Oxide ◽  
X Ray Diffraction ◽  
Structural And Optical Properties ◽  
Optical Energy Gap ◽  
X Ray ◽  
Laser Induced Plasma ◽  
Atomic Force ◽  
Doping Ratio

Abstract In this study, the effect of grafting with Iron (Fe) ratios (0.1, 0.3 and 0.5) on the structural and optical properties of cadmium oxide films (CdO) was studied, as these films were prepared on glass bases using the method of pulse laser deposition (PLD). The crystallization nature of the prepared films was examined by X-ray diffraction technique (XRD), which showed that the synthesis of the prepared films is polycrystalline, and Atomic Force Microscope (AFM) images also showed that the increased vaccination with Iron led to an increase in the crustal size ratio and a decrease in surface roughness, The absorption coefficient was calculated and the optical energy gap for the prepared thin films. It was found the absorption decreases and the energy gap decreases with the increase of doping ratio.

scholarly journals Influence of Sn doping ratio on the structural and optical properties of CdO films prepared by laser induced plasma

2020 ◽  
Vol 18 (45) ◽  
pp. 1-8
Author(s):  
Kadhim A. Aadim ◽  
Baida M. Ahmed ◽  
Madyan A. Khalaf
Keyword(s):  
Optical Properties ◽  
Energy Gap ◽  
Cadmium Oxide ◽  
X Ray Diffraction ◽  
Structural And Optical Properties ◽  
Optical Energy Gap ◽  
Average Roughness ◽  
Optical Energy ◽  
Sn Doping ◽  
Laser Induced Plasma

In this work, we study the effect of doping Sn on the structural and optical properties of pure cadmium oxide films at different concentrations of Tin (Sn) (X=0.1,0.3 and 0.5) .The films prepared by using the laser-induced plasma at wavelength of laser 1064 nm and duration 9 ns under pressure reached to 2.5×10-2 mbar. The results of X-ray diffraction tests showed that the all prepared films  are polycrystalline. As for the topography of the films surface, it was measured using AFM , where the results showed that the grain size increases with an increase in the percentage of doping  in addition to an increase in the average roughness. The optical properties of all films have also been studied through the absorbance spectrum of the range  of  the wavelength (350-1100) nm, where the optical energy gap was direct transitions it was found that the value of the optical energy gap increased with increasing the doping.

scholarly journals Synthesis and Characterization of 〖(CdO)〗_(1-x) 〖Mg〗_x films by pulsed laser deposition

2020 ◽  
Vol 18 (45) ◽  
pp. 59-67
Author(s):  
Jasim Mohamad Hussain ◽  
Awatif S Jasim ◽  
Kadhim Abdulwahid Aadim
Keyword(s):  
Absorption Coefficient ◽  
Energy Gap ◽  
Cadmium Oxide ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
X Ray Diffraction ◽  
Structural And Optical Properties ◽  
Optical Energy Gap ◽  
X Ray

In this study, the effect of grafting with magnesium (Mg) ratios (0.1, 0.3, 0.5) on the structural and optical properties of cadmium oxide films (CdO) was studied, as these films were prepared on glass bases using the method of pulse laser deposition (PLD). The crystallization nature of the prepared membranes was examined by X-ray diffraction technique (XRD), which showed that the synthesis of the prepared membranes is polycrystalline, and (AFM) images also showed that the increased deformation with magnesium led to an increase in the grain size ratio and a decrease in surface roughness, as well as the absorption coefficient was calculated. And the optical energy gap for the prepared membranes, where it was found that the absorption coefficient increases with the increase in the proportion of vaccination and that the energy gap decreases with increasing rates of vaccination.

scholarly journals Structural and Optical Properties of ZnO-CdO Nanocomposite Using Electrodeposition Method

2016 ◽  
Vol 63 ◽  
pp. 127-133 ◽  
Author(s):  
Zehraa N. Abdul-Ameer ◽  
Ibrahim R. Agool
Keyword(s):  
Grain Size ◽  
Optical Properties ◽  
Surface Morphology ◽  
Electrochemical Deposition ◽  
Energy Gap ◽  
X Ray Diffraction ◽  
Structural And Optical Properties ◽  
Optical Energy Gap ◽  
X Ray ◽  
Shift Behavior

ZnO,CdO,ZnO-CdO nanocomposite were prepared using electrochemical deposition the prepared samples were characterized using X-ray diffraction and the photoluminenscence spectroscopy (PL) to get the surface morphology leading to calculation of optical energy gap .the grain size determined by Scherrer's equation (22-25) nm .through the calculation of Eg ,it was noticed a red shift behavior in ZnO manner due to addition of CdO content

scholarly journals Preparation and Study of Colloidal CdO Nanoparticles by Laser Ablation in Polyvinylpyrrolidone

2016 ◽  
Vol 6 ◽  
pp. 1-7 ◽  
Author(s):  
Ibrahim R. Agool ◽  
Ahmed N. Abd ◽  
Mohammed O. Dawood
Keyword(s):  
Optical Properties ◽  
Laser Ablation ◽  
Pulse Energy ◽  
Cadmium Oxide ◽  
Colloidal Nanoparticles ◽  
Solid Target ◽  
X Ray Diffraction ◽  
X Ray ◽  
Atomic Force ◽  
Cdo Nanoparticles

Nanoparticles NPSof cadmium oxide CdO were generated by laser ablation of a solid target (cadmium) in polyvinylpyrrolidone (PVP) solution. CdO colloidal nanoparticles have been synthesized by laser ablation Nd:YAG (1064 nm, 100 pulses, pulse energy= 400 mJ) when the solid target CdO was immersed in PVP. Structure, topography and optical properties of the CdO nanoparticles NPShave been studied using X-ray diffraction (XRD), atomic force microscope (AFM) and the UV-Vis absorption respectively.

scholarly journals Effect of UV Irradiation on The Structure and Optical Properties of PVA/Cucl2

2018 ◽  
Vol 14 (2) ◽  
pp. 5378-5387 ◽  
Author(s):  
Moustafa Tawfik Ahmed
Keyword(s):  
Optical Properties ◽  
Uv Irradiation ◽  
Energy Gap ◽  
Copper Chloride ◽  
Uv Spectra ◽  
X Ray Diffraction ◽  
Oh Groups ◽  
X Ray ◽  
Atomic Force ◽  
Direct Energy

The morphology and optical properties of doped PVA with Copper Chloride, CuCl2 have been investigated.   The morphology of doped samples has been examined using both atomic force microscope (AFM) and scanning electron microscope (SEM) to investigate the effect of CuCl2 on the structure of PVA.  X-ray diffraction showed that the crystallinity of PVA is increased with increasing CuCl2 ratio.  In addition, FTIR spectra showed that, some absorbance bands such as bands of OH groups have been affected due to CuCl2 ratio and UV irradiation.  On the other hand, the effect of CuCl2 ratio and UV irradiation on UV spectra of all samples has been carried out in the range from 200 to 800 nm.  It is observed that, PVA is characterized by two absorbance bands at 278 and 313 nm. The values of absorbance edge, Urbach energy and the direct energy gap of all samples have been calculated.

scholarly journals Structural and optical properties for PVA- PEG-MnCl2 composites

2019 ◽  
Vol 15 (32) ◽  
pp. 99-113
Author(s):  
Mahdi Hasan Suhail
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Polymer Blend ◽  
Extinction Coefficient ◽  
Energy Gap ◽  
Dielectric Constants ◽  
Structural And Optical Properties ◽  
Optical Energy Gap ◽  
X Ray ◽  
Amorphous Structures

Polymer films of PEG and PVA and their blend with differentconcentrations of MnCl2 (0, 2, 4, 6 and 10 %.wt) were study usingcasting technique. The X-ray spectra of pure PEG, PVA andPVA:PEG films and with addition of 2% concentrations from(MnCl2) show amorphous structures. The results for FTIR show theinteraction between the filler and polymer blend results indecreasing crystallinity with rich amorphous phase. Thisamorphous nature confirms the complexation between the filler andthe polymer blend. The optical properties of (PVA:PEG/MnCl2)contain the recording of absorbance (A) and explain that theabsorption coefficient (α), refractive index (n), extinction coefficient(ko) and the dielectric constants (real and imaginary part) increasewith increasing the concentration of Composite (PVA:PEG/MnCl2).The optical energy gap for electrons transitions both are direct andindirect allowed.

scholarly journals Impact of ZnO Atomic Ratio on Structural, Morphological and Some Optical Properties of (SnO2)1-x (ZnO)x Thin Films

2020 ◽  
pp. 333-340
Author(s):  
Donia Yas Khudair ◽  
Ramiz Ahmed Al Ansari
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Energy Gap ◽  
Atomic Ratio ◽  
X Ray Diffraction ◽  
X Ray ◽  
Glass Substrates ◽  
Atomic Force ◽  
Uv Visible ◽  
Longitudinal Structures

In this work, SnO2 and (SnO2)1-x(ZnO)x composite thin films with different ZnO atomic ratios (x=0, 5, 10, 15 and 20%) were prepared by pulsed laser deposition technique on clean glass substrates at room temperature without any treatment. The deposited thin films were characterized by x-ray diffraction atomic force microscope  and UV-visible spectrophotometer to study the effect of the ZnO atomic ratio on their structural, morphological and optical properties. It was found that the crystallinety and the crystalline size vary according to ZnO atomic ratio. The surface appeared as longitudinal structures which was convert to spherical shapes with increasing ZnO atomic ratio. The optical transmission and energy gap increased with increasing ZnO atomic ratio. 

scholarly journals Influence of Laser Energy and Annealing on Structural and Optical Properties of CdS Films Prepared by Laser Induced Plasma

2020 ◽  
pp. 1307-1312
Author(s):  
Wadaa S. Hussein ◽  
Ala' Fadhil Ahmed ◽  
Kadhim A. Aadim
Keyword(s):  
Optical Properties ◽  
Annealing Temperature ◽  
Laser Energy ◽  
X Ray Diffraction ◽  
Structural And Optical Properties ◽  
X Ray ◽  
Laser Induced Plasma ◽  
Visible Spectra ◽  
Uv Visible ◽  
Diffraction Patterns

The current study was achieved on the effects of laser energy and annealing temperature on x-ray structural and optical properties, such as the UV-Visible spectra of cadmium sulfide (CdS). The films were prepared using pules laser deposition technique (PLD) under vacuum at a pressure of 2.5×10-2 mbar with different laser energies (500-800 mJ) and annealing at a temperature of 473K. X-ray diffraction patterns and intensity curves for the CdS showed that the formation of CdS multi-crystallization films at all laser energies. The optical properties of the films were studied and the variables affecting them were investigated in relation to laser energy and changes in temperature.

scholarly journals Temperature effect on structural and optical properties of V2O5 thin films prepared by spray pyrolysis technique

2020 ◽  
Vol 307 ◽  
pp. 01033
Author(s):  
Asmaa Mrigal ◽  
Lahocine El Gana ◽  
Mouhamed Addou ◽  
Khadija Bahedi ◽  
Rajae Temsamani ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Energy Gap ◽  
Spray Pyrolysis Technique ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
Structural And Optical Properties ◽  
X Ray ◽  
Glass Substrates ◽  
Optical Dielectric Constant

In this work, the effect of substrate temperature on structural and optical properties of V2O5 thin films has been characterized by X-ray diffraction (XRD); SEM and transmission. The films mince has been prepared by Reactive Chemical Spraying technology in Liquid Phase (RCSLP) on glass substrates preheated at (350, 400, 450 and 500 °C). The X-ray diffraction analysis confirms that all layers are polycrystalline, and the preferred orientation of V2O5 is the (001) plane. The morphology of V2O5 thin films are porous nature and their particle’s shape is three-dimensional. The transmittance and absorbance of thin film were measured from which the optical constants (Energy gap, Refractive index, Absorption coefficient, Extinction coefficient and Optical dielectric constant) were determined.

Structural and Optical Properties of Er3+- Doped Zinc-Titania Tellurite Glasses

2019 ◽  
Vol 290 ◽  
pp. 9-15 ◽  
Author(s):  
S.O. Baki ◽  
Mohamed Kamari Halimah
Keyword(s):  
Optical Properties ◽  
Near Infrared ◽  
Energy Gap ◽  
Optical Transition ◽  
X Ray Diffraction ◽  
Structural And Optical Properties ◽  
Optical Energy Gap ◽  
Absorption Bands ◽  
Transition Mechanism ◽  
Infrared Luminescence

In the present work, we studied the structural and optical properties of zinc-titania tellurite glass (75-x)TeO2-20ZnO-5TiO2-xEr2O3 doped with erbium ion Er3+ (where mol % : x= 0 (host), 0.5, 1, 1.5). The reported glasses were synthesized using tradition melt quench method. The X-ray diffraction and thermal profile were utilized to study the amorphous nature of the mentioned glass. Optical absorption UV-Visible-NIR spectra were measured for optical energy gap and Er3+ absorption bands analysis. Both visible and near infrared luminescence were performed at room temperature using 980 nm laser diode excitation where the optical transition mechanism of the Er3+ in the glass is finally proposed. Broad luminescence in the present glass suggests its potential for broadband optical application.

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