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

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 .

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

International Letters of Chemistry Physics and Astronomy ◽

10.18052/www.scipress.com/ilcpa.65.37 ◽

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.

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Influence of Doping on Optical Properties of (CdS:Fe+3)Thin Films Prepared by Chemical Spray pyrolysis

Al-Mustansiriyah Journal of Science ◽

10.23851/mjs.v30i1.526 ◽

2019 ◽

Vol 30 (1) ◽

pp. 193

Author(s):

Karrar Mahdi Saleh

Keyword(s):

Thin Films ◽

Optical Properties ◽

Spray Pyrolysis ◽

Energy Gap ◽

Nitrate Solution ◽

Constant Thickness ◽

Chemical Spray Pyrolysis ◽

Optical Energy Gap ◽

Optical Energy ◽

Chemical Spray

In the present work, undoped CdS and doped with iron CdS:Fe+3 thin films have been prepared by chemical spray pyrolysis method on glass substrate with different temperature from cadmium nitrate solution with constant thickness(450 ± 5 nm), and study the effect of the percentage of doping with iron on optical properties of prepared films. The optical properties have been studied from transmittance and absorbance spectral within wavelengths range (380-900 nm). The results showed that all the prepared films has direct electronic transitions and optical energy gap between (2.31-2.44 eV). They also showed that the transmittance and optical energy gap of films prepared from nitrate solution increase with increasing of substrate temperature, then transmittance start downward with the continued increase in temperature (400, 450 oC), and a decrease in the optical energy gap with increasing doping percentage with iron.

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Study Influence of Substrate Temperature on Optical Properties of CdS Thin Films Prepared by Chemical Spray pyrolysis

Ibn AL- Haitham Journal For Pure and Applied Science ◽

10.30526/32.1.1982 ◽

2019 ◽

Vol 32 (1) ◽

pp. 6 ◽

Cited By ~ 2

Author(s):

Karrar Mahdi Saleh

Keyword(s):

Thin Films ◽

Optical Properties ◽

Substrate Temperature ◽

Spray Pyrolysis ◽

Energy Gap ◽

Nitrate Solution ◽

Chemical Spray Pyrolysis ◽

Optical Energy Gap ◽

Chemical Spray ◽

Cds Thin Films

This study aims to prepare Cadmium Sulphide (CdS) thin films using thermal Chemical Spray Pyrolysis (CSP) on glass of different temperatures substrate from cadmium nitrate solution. Constant thickness was (430 ± 20 nm) and the effect of substrate temperature on the optical properties of prepared thin films. Optical properties have been studied from transmittance and absorbance spectral within wavelengths range (360 - 900 nm). The results show that all the prepared films have a direct electron transitions and optical energy gap between (2.31-2.44 eV). They also show that the transmittance and optical energy gap of films prepared from nitrate solution increase with increasing of substrate temperature, then transmittance start downward with the continued increase in temperature (400, 450) oC.

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A Study of the Structural and Optical Properties of SnS:F prepared by chemical spray pyrolysis technique

Baghdad Science Journal ◽

10.21123/bsj.11.2.518-526 ◽

2014 ◽

Vol 11 (2) ◽

pp. 518-526

Author(s):

Baghdad Science Journal

Keyword(s):

Optical Properties ◽

Spray Pyrolysis ◽

Energy Gap ◽

Spray Pyrolysis Technique ◽

Chemical Spray Pyrolysis ◽

Structural And Optical Properties ◽

Optical Energy Gap ◽

Optical Energy ◽

Chemical Spray Pyrolysis Technique ◽

Chemical Spray

Thin films of pure tin mono-sulfide SnS and tin mono-sulfide for (1,2,3,4)% fluorine SnS:F with Thicknesses of (0.85 ±0.05) ?m and (0.45±0.05) ?m respectively were prepared by chemical spray pyrolysis technique. the effect of doping of F on structural and optical properties has been studied. X-Ray diffraction analysis showed that the prepared films were polycrystalline with orthorhombic structure. It was found that doping increased the intensity of diffraction peaks. Optical properties of all samples were studied by recording the absorption and transmission spectrum in range of wave lengths (300-900) nm. The optical energy gap for direct forbidden transition and indirect allowed transition were evaluated It is found that for doping less than 2% the optical energy gap increases as the percentage of doping increases in the samples while for doping more than 2% the values of the optical energy gap decreases as the percentage of doping increases.

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