Structural and optical properties of SrAl2O4: Eu2+/Dy3+ phosphors synthesized by flame spray pyrolysis technique

Undoped and Co-doped zinc oxide (CZO) thin films have been prepared by spray pyrolysis technique using solution of zinc acetate and cobalt chloride. The effect of Co dopants on structural and optical properties has been investigated. The films were found to exhibit maximum transmittance (~90%) and low absorbance. The structural properties of the deposited films were examined by x-ray diffraction (XRD). These films, deposited on glass substrates at (400? C), have a polycrystalline texture with a wurtzite hexagonal structure, and the grain size was decreased with increasing Co concentration, and no change was observed in lattice constants while the optical band gap decreased from (3.18-3.02) eV for direct allowed transition. Other parameters such as Texture Coefficient (Tc), dislocation density (?) and number of crystals (M) were also calculated .

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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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Retraction notice to “Growth, structural and optical properties of CdxZn1−xS thin films deposited using spray pyrolysis technique” [Curr. Appl. Phys. 10 (2010) pp. 193–198]

Current Applied Physics ◽

10.1016/j.cap.2012.02.001 ◽

2012 ◽

Vol 12 (3) ◽

pp. 1002

Author(s):

Y. Raviprakash ◽

Kasturi V. Bangera ◽

G.K. Shivakumar

Keyword(s):

Thin Films ◽

Optical Properties ◽

Spray Pyrolysis ◽

Spray Pyrolysis Technique ◽

Structural And Optical Properties ◽

Retraction Notice

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Synergistic Effect of Nanocrystalline SnO2 Sensitization by Bimetallic Au and Pd Modification via Ingle Step Flame Spray Pyrolysis Technique

Proceedings ◽

10.3390/proceedings2019014046 ◽

2019 ◽

Vol 14 (1) ◽

pp. 46

Author(s):

Valeriy Krivetskiy ◽

Konstantin Zamanskiy ◽

Alina Krotova

Keyword(s):

Spray Pyrolysis ◽

Gas Sensor ◽

Spray Pyrolysis Technique ◽

Single Step ◽

Flame Spray Pyrolysis ◽

Flame Spray ◽

Level Control ◽

Sensor Performance ◽

Icp Ms ◽

Composition Structure

Convenient and scalable single step flame spray pyrolysis (FSP) synthesis of bimetal AuPd sensitized nanocrystalline SnO2 for gas sensor application is reported. The materials chemical composition, structure and morphology has been studied by XRD, XPS, HAADFSTEM, BET, ICP-MS techniques as well as thermo-programmed reduction with hydrogen (TPR-H2). Superior gas sensor response of bimetal modified SnO2 towards wide concentration range of reducing (CO, CH4, C3H8, H2S, NH3) and oxidizing (NO2) gases compared to pure and monometallic modified SnO2 is reported. The observed enhanced gas sensor performance is concluded to arise from combination of facilitated oxygen molecule spillover on gold particles and electronic effect of Fermi level control by reoxidizing Pd-PdO clusters, homogeneously distributed over SnO2 particles surface.

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