scholarly journals Optical Characterization of NiO Doped Fe2O3

2015 ◽  
Vol 45 ◽  
pp. 50-58 ◽  
Author(s):  
Sami Salmann Chiad
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Energy Gap ◽  
Optical Characterization ◽  
Skin Depth ◽  
Spray Pyrolysis Method ◽  
Pyrolysis Method ◽  
Uv Visible ◽  
Absorbance Spectra

In this paper, the Fe2O3 thin film were prepared with various ratios doping of NiO by spray pyrolysis method on glass substrate temperature 400 °C. The initial solution was including a 0.1 M/L for both NiCl2 and FeCl3 diluted with redistilled water and a few drops of HCl. The effect of NiO-doping on optical properties were studied. UV-Visible spectrophotometer in the range of (300-900) nm used to determine absorbance spectra. The transmittance increased with increasing NiO content in NiO:Fe2O3 thin films, same behavior of extinction coefficient and skin depth. The energy gap increased from 2.45 eV before doping to 2.86 eV after 3% NiO-doping. While the reflectance, absorption coefficient, and refractive index are decreased with increasing NiO content in Fe2O3 thin films.

scholarly journals Effects of Cu-Doping on Optical Properties of NiO

2015 ◽  
Vol 48 ◽  
pp. 155-162 ◽  
Author(s):  
Nidhal Nissan Jandow
Keyword(s):  
Thin Film ◽  
Optical Properties ◽  
Absorption Coefficient ◽  
Extinction Coefficient ◽  
Energy Gap ◽  
Spray Pyrolysis Technique ◽  
Skin Depth ◽  
Cu Doping ◽  
Uv Visible ◽  
Absorbance Spectra

This work presents the effect of Cu-doping on some optical properties of Cu:NiO thin film prepared by spray pyrolysis technique. UV-Visible spectrophotometer in the range 380-900 nm used to determine the absorbance spectra for various Cu-doping of Cu:NiO thin film. The transmittance and energy gap are decreased with increasing Cu-doping in the prepared films, while absorption coefficient, extinction coefficient, and skin depth are increased with increasing Cu-doping.

scholarly journals Spray Pyrolysis Deposition and Effect of Annealing Temperature on Optical Properties of Cu:NiO Film

2015 ◽  
Vol 47 ◽  
pp. 178-184 ◽  
Author(s):  
Khalid Haneen Abass
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Spray Pyrolysis ◽  
Annealing Temperature ◽  
Energy Gap ◽  
Spray Pyrolysis Method ◽  
Spectral Transmittance ◽  
Pyrolysis Method ◽  
Spray Pyrolysis Deposition ◽  
Uv Visible

Spray pyrolysis method that used to prepare Cu:NiO thin films onto glass substrate with various annealing temperature. Spectral transmittance of prepared thin films determined by UV-Visible spectrophotometer in the range of (380-900) nm. The transmittance decreased with increasing annealing temperature. While the absorption coefficient and extinction coefficient increased with increasing annealing temperature. Energy gap decreased from 2.9 eV before annealing to 2.78 eV after 500 °C annealing temperature.

Preparation and Characterization of Nickel Doped Cadmium Sulfide Nanostructure Thin Films via Spray Pyrolysis Method

2021 ◽  
Vol 900 ◽  
pp. 131-142
Author(s):  
Zainab Naser Jameel ◽  
Halah H. Rashed
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Spray Pyrolysis ◽  
Structural Parameters ◽  
Hexagonal Structure ◽  
Spray Pyrolysis Method ◽  
Ni Doping ◽  
Sem Images ◽  
Pyrolysis Method ◽  
Uv Visible

Pure and nickel-doped cadmium sulphide (NixCd1-xS where x= 2.5%, 5%, 7.5%) nanostructure thin films were successfully prepared by spray pyrolysis method on glass substrate at 350 °C. The films characterized using X-ray crystallography diffractmeter, Scanning Electron Microscope, Atomic Force Microscope and Uv-visible analysis in order to explore the properties of thin film. Structural studies revealed that the deposited films exhibit hexagonal structure with strong intensity at (002) plane. Structural parameters such as crystallite size, strain and dislocation density were calculated for films with different doping concentration. AFM measurements showed that the average diameter increased with increasing Ni doping, where surface roughness and root mean sequre decreased with increasing Ni doping, SEM images show that thin film have been grown and converted into nanowire with increasing of Ni content.Finally, Uv-visible analysis show that the optical band gap of CdS decreased from 2.44 to 2.38 eV with increasing of Ni doping concentrations.

Optical Characterization of LaF3 by Variable Angle Purged UV Spectroscopic Ellipsometry

2013 ◽  
Vol 662 ◽  
pp. 243-248
Author(s):  
Wen Yuan Deng
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Substrate Temperature ◽  
Optical Characterization ◽  
Theory Model ◽  
Material Dispersion ◽  
Optical Index ◽  
Variable Angle ◽  
Selection Of

The optical characterization of LaF3 thin film in DUV spectral range was experimental investigated by using a variable angle purged UV spectroscopic ellipsometer. In order to take into account the inhomogeneity, a theory model that dividing the single thin film into several sublayers was adopted. Two kinds of LaF3 thin films fabricated on fused silicate substrate with different substrates temperature were tested. From the obtained optical index and the physical thickness of different sublayer in the two different kinds of LaF3 thin films, it was found that, the inhomogeneity of the LaF3 thin film deposited with substrate temperature at 300°C was stronger than that of the LaF3 thin film deposited with substrate temperature at 250°C, indicating that the substrate temperature has important influence on the optical index and inhomogeneity of LaF3 thin films. For both of the two kinds LaF3 thin films, the agreement between the measured transmittance and the simulated transmittance using the parameters from regression of SE was nice, indicating that the selection of the material dispersion law and regression procedure were successful.

Characterization of deposited CdS thin films by Spray Pyrolysis method and used in Cd/CdS/p-Si/Al structure

2017 ◽  
Author(s):  
Oğuzhan Özakın ◽  
Şeydanur Aktaş ◽  
Betül Güzeldir ◽  
Mustafa Sağlam
Keyword(s):  
Thin Films ◽  
Spray Pyrolysis ◽  
Spray Pyrolysis Method ◽  
Pyrolysis Method ◽  
Cds Thin Films

scholarly journals Annealing Temperature Effects on the Optical Properties of CdO Thin Films Deposited by CSP Technique

2014 ◽  
Vol 42 ◽  
pp. 63-71 ◽  
Author(s):  
Sami Salmann Chiad
Keyword(s):  
Optical Properties ◽  
Room Temperature ◽  
Annealing Temperature ◽  
Energy Gap ◽  
Skin Depth ◽  
Spray Pyrolysis Method ◽  
Chemical Spray Pyrolysis ◽  
Chemical Spray ◽  
Uv Visible ◽  
Cdo Thin Films

By chemical spray pyrolysis method. The CdO thin film prepared at constant film thickness (350 nm). The prepared films are annealed at a temperature of 450 and 500 °C. The optical properties are calculated from the measurement of UV-Visible spectrophotometer spectrum in the range of (300-900) nm at room temperature. The transmittance, absorption coefficient, extinction coefficient, refractive index, and skin depth are calculated as annealing temperature. The energy gap decreased from 2.52 eV to 2.47 eV when the annealing temperature increased from room temperature to 500 °C.

scholarly journals Synthesis and Characterization of Graphene Oxide and Reduced Graphene Oxide Thin Films Deposited by Spray Pyrolysis Method

Graphene ◽  
2016 ◽  
Vol 05 (03) ◽  
pp. 143-154 ◽  
Author(s):  
M. S. Eluyemi ◽  
M. A. Eleruja ◽  
A. V. Adedeji ◽  
B. Olofinjana ◽  
O. Fasakin ◽  
...  
Keyword(s):  
Thin Films ◽  
Graphene Oxide ◽  
Spray Pyrolysis ◽  
Reduced Graphene Oxide ◽  
Synthesis And Characterization ◽  
Spray Pyrolysis Method ◽  
Oxide Thin Films ◽  
Pyrolysis Method ◽  
Reduced Graphene

Characterization of Al2O3 thin films prepared by spray pyrolysis method for humidity sensor

2007 ◽  
Vol 135 (2) ◽  
pp. 552-557 ◽  
Author(s):  
K.S. Shamala ◽  
L.C.S. Murthy ◽  
M.C. Radhakrishna ◽  
K. Narasimha Rao
Keyword(s):  
Thin Films ◽  
Spray Pyrolysis ◽  
Humidity Sensor ◽  
Spray Pyrolysis Method ◽  
Pyrolysis Method
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