scholarly journals The Effect of Chlorine Concentration on the Optical Constants of SnS Thin Films

2011 ◽  
Vol 8 (2) ◽  
pp. 566-570
Author(s):  
Baghdad Science Journal
Keyword(s):  
Thin Films ◽  
Dielectric Constant ◽  
Refractive Index ◽  
Optical Constants ◽  
Skin Depth ◽  
Chlorine Concentration ◽  
Chemical Spray Pyrolysis ◽  
Chemical Spray ◽  
Sns Thin Films ◽  
Effect Of Chlorine

Chlorine doped SnS have been prepared utilizing chemical spray pyrolysis. The effects of chlorine concentration on the optical constants were studied. It was seen that the transmittance decreased with doping, while reflectance, refractive index, extinction coefficient, real and imaginary parts of dielectric constant were increased as the doping percentage increased. The results show also that the skin depth decrease as the chlorine percentage increased which could be assure that it is transmittance related.

Defect levels in SnS thin films prepared using chemical spray pyrolysis

2012 ◽  
Vol 209 (7) ◽  
pp. 1274-1278 ◽  
Author(s):  
T. H. Sajeesh ◽  
K. B. Jinesh ◽  
M. Rao ◽  
C. S. Kartha ◽  
K. P. Vijayakumar
Keyword(s):  
Thin Films ◽  
Spray Pyrolysis ◽  
Chemical Spray Pyrolysis ◽  
Chemical Spray ◽  
Defect Levels ◽  
Sns Thin Films

scholarly journals Structural, Optical Constants and Photoluminescence of ZnO Thin Films Grown by Sol-Gel Spin Coating

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Abdel-Sattar Gadallah ◽  
M. M. El-Nahass
Keyword(s):  
Thin Films ◽  
Dielectric Constant ◽  
Refractive Index ◽  
Spectral Range ◽  
Spin Coating ◽  
Optical Constants ◽  
Sol Gel ◽  
Free Carrier ◽  
Zno Thin Films ◽  
Free Carrier Absorption

We report manufacturing and characterization of low cost ZnO thin films grown on glass substrates by sol-gel spin coating method. For structural properties, X-ray diffraction measurements have been utilized for evaluating the dominant orientation of the thin films. For optical properties, reflectance and transmittance spectrophotometric measurements have been done in the spectral range from 350 nm to 2000 nm. The transmittance of the prepared thin films is 92.4% and 88.4%. Determination of the optical constants such as refractive index, absorption coefficient, and dielectric constant in this wavelength range has been evaluated. Further, normal dispersion of the refractive index has been analyzed in terms of single oscillator model of free carrier absorption to estimate the dispersion and oscillation energy. The lattice dielectric constant and the ratio of free carrier concentration to free carrier effective mass have been determined. Moreover, photoluminescence measurements of the thin films in the spectral range from 350 nm to 900 nm have been presented. Electrical measurements for resistivity evaluation of the films have been done. An analysis in terms of order-disorder of the material has been presented to provide more consistency in the results.

scholarly journals Structural and optical properties of TiO2:NiO nanoparticles thin films prepare by chemical spray pyrolysis

2021 ◽  
Vol 19 (49) ◽  
pp. 22-31
Author(s):  
Wasan A. Al-Taa'y ◽  
Bushra A. Hasan
Keyword(s):  
Thin Films ◽  
Refractive Index ◽  
Optical Properties ◽  
Spray Pyrolysis ◽  
Extinction Coefficient ◽  
Energy Gap ◽  
Anatase Phase ◽  
Chemical Spray Pyrolysis ◽  
Chemical Spray ◽  
Structure Properties

The properties of structural and optical of pure and doped nano titanium dioxide (TiO2) films, prepared using chemical spray pyrolysis (CPS) technique, with different nanosize nickel oxide (NiO) concentrations in the range (3-9)wt% have been studied. X-Ray diffraction (XRD) technique where using to analysis the structure properties of the prepared thin films. The results revealed that the structure properties of TiO2 have polycrystalline structure with anatase phase. The parameters, energy gap, extinction coefficient, refractive index, real and imaginary parts were studied using absorbance and transmittance measurements from a computerized ultraviolet visible spectrophotometer (Shimadzu UV-1601 PC) in the wavelengths range (300-800)nm. Optical properties of TiO2 affected by the adding of NiO impurity where the transmittance increased as NiO concentration increased but with more adding the transmittance returned to decrease again. It was found the extinction coefficient, refractive index, real and imaginary parts values decreased with increasing doping percentage up to 7% and then increases occur one more again at 9%. Energy gap values increased after doping with NiO where the values lies in the range was 3.31 to 3.51 eV .

scholarly journals Effect of Manganese Contain on the Optical Properties of CuO Thin Films

2016 ◽  
Vol 65 ◽  
pp. 37-42
Author(s):  
Wasmaa Abdulsattar Jabbar
Keyword(s):  
Thin Films ◽  
Refractive Index ◽  
Optical Properties ◽  
Absorption Coefficient ◽  
Copper Oxide ◽  
Extinction Coefficient ◽  
Energy Gap ◽  
Chemical Spray Pyrolysis ◽  
Chemical Spray ◽  
Uv Visible

Copper oxide prepared with various contains of Manganese by chemical spray pyrolysis. Some optical properties are studied from recording the absorption spectra via UV-Visible spectrophotometer in the range of 460-900 nm. The absorbance increased with increasing Mn-contain in the CuO thin films, and the absorption coefficient. Extinction coefficient and refractive index are decreased with increasing Mn-contain in the CuO thin films, also the energy gap shifted from 2 eV to 1.91 eV after 4%Mn additive.

Suited growth parameters inducing type of conductivity conversions on chemical spray pyrolysis synthesized SnS thin films

2016 ◽  
Vol 121 ◽  
pp. 347-359 ◽  
Author(s):  
Jacob A. Andrade-Arvizu ◽  
M.F. García-Sánchez ◽  
M. Courel-Piedrahita ◽  
F. Pulgarín-Agudelo ◽  
E. Santiago-Jaimes ◽  
...  
Keyword(s):  
Thin Films ◽  
Spray Pyrolysis ◽  
Growth Parameters ◽  
Chemical Spray Pyrolysis ◽  
Chemical Spray ◽  
Sns Thin Films
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