Modification on the properties of vanadium oxide films deposited from NH4F added HNO3 treated ammonium metavanadate precursor solution by spray pyrolysis technique

2018 ◽  
Vol 655 ◽  
pp. 62-69
Author(s):  
Mudaliar Mahesh Margoni ◽  
S. Mathuri ◽  
K. Ramamurthi ◽  
R. Ramesh Babu ◽  
K. Sethuraman
Keyword(s):  
Vanadium Oxide ◽  
Spray Pyrolysis ◽  
Spray Pyrolysis Technique ◽  
Oxide Films ◽  
Precursor Solution ◽  
Ammonium Metavanadate ◽  
Vanadium Oxide Films

Fluoride and Antimony-Doped Tin Oxide Film by Spray Pyrolysis

2008 ◽  
Vol 55-57 ◽  
pp. 513-516 ◽  
Author(s):  
R. Buntem ◽  
P. Kraisingdecha ◽  
W. Sadee
Keyword(s):  
Oxide Film ◽  
Spray Pyrolysis ◽  
Tin Oxide ◽  
Light Transmission ◽  
Spray Pyrolysis Technique ◽  
Oxide Films ◽  
Precursor Solution ◽  
Ammonium Fluoride ◽  
Tin Chloride ◽  
Tin Oxide Films

Thin films of undoped, fluoride- and antimony- doped tin oxide on glass were prepared by spray pyrolysis technique. The aerosols were atomized from precursor solution by a commercial ultrasonic generator. Tin chloride(SnCl2.2H2O), ammonium fluoride (NH4F), and antimony chloride (SbCl3) were used as a source for tin, fluoride, and antimony respectively. For the undoped tin oxide film, the solution of 0.8 M tin chloride was used as a precursor solution. While fluoride-doped tin oxide films (FTO), the solution of 0.8 M SnCl2.2H2O in ethanol and varying amounts of NH4F dissolved in 0.2 M HCl (0.6 mL) were used as a precursor solution. The doping concentrations of NH4F were 0, 0.2, 0.3, 0.4, 0.5 and 0.6 M. For the antimony- doped tin oxide films (ATO), the doping concentrations of SbCl3 dissolved in butanol (10 mL) are 0, 0.016, 0.032, 0.048, 0.064 and 0.080 M. The aerosols were sprayed on the hot glass substrates by air at a flow rate of 1 L/minute through a PVC and glass tubing for 20 minutes for every solution. Substrate temperature was kept at 320 ± 15 °C for undoped and fluoride-doped tin oxide films and at 390 ± 20 °C for antimony- doped tin oxide films. The electrical and optical properties of the films were characterized by four-point probe measurement and UV/VIS spectrophotometer. The best FTO film exhibits the resistivity of 53.83 W-cm and the light transmission of 88.18%. While the best ATO exhibits the resistivity of 61.03 W-cm and the light transmission of 86.45%.

Vanadium oxide films for optical modulation applications

2006 ◽  
Author(s):  
S. Paradis ◽  
P. Mérel ◽  
P. Laou ◽  
D. Alain
Keyword(s):  
Vanadium Oxide ◽  
Oxide Films ◽  
Optical Modulation ◽  
Vanadium Oxide Films

Structural transformation and functional properties of vanadium oxide films after low-temperature annealing

2014 ◽  
Vol 564 ◽  
pp. 179-185 ◽  
Author(s):  
Yu. Goltvyanskyi ◽  
I. Khatsevych ◽  
A. Kuchuk ◽  
V. Kladko ◽  
V. Melnik ◽  
...  
Keyword(s):  
Low Temperature ◽  
Vanadium Oxide ◽  
Functional Properties ◽  
Structural Transformation ◽  
Oxide Films ◽  
Low Temperature Annealing ◽  
Vanadium Oxide Films

Influence of Substrate Temperature in the Morphology and Microstructure of YSZ Films Obtained on LSM Porous Substrate via Spray Pyrolysis

2012 ◽  
Vol 727-728 ◽  
pp. 691-696 ◽  
Author(s):  
Tiago Falcade ◽  
Giselle Barbosa de Oliveira ◽  
Diego Pereira Tarragó ◽  
Vânia Caldas de Sousa ◽  
Célia de Fraga Malfatti
Keyword(s):  
Substrate Temperature ◽  
Spray Pyrolysis ◽  
Spray Pyrolysis Technique ◽  
Precursor Solution ◽  
Cubic Phase ◽  
Porous Substrate ◽  
X Ray Diffraction ◽  
Heat Treated ◽  
Ft Ir ◽  
Influence Of Substrate

Many studies have been reported in the literature related to YSZ films deposited on dense substrate or applied directly on the SOFC anode. However, there are not a lot of studies about the YSZ deposition on the cathode. The present work aims to obtain yttria-stabilized zirconia (YSZ), using the spray pyrolysis technique, for their application as electrolyte in solid oxide fuel cells (SOFC). The films were obtained from a precursor solution containing zirconium and yttrium salts, dissolved in ethanol and propylene glycol (1:1), this solution was sprayed onto a heated LSM porous substrate. The substrate temperature was varied in order to obtain dense and homogeneous films. After deposition, the films were heat treated, aiming to crystallize and stabilize the zirconia cubic phase. The films were characterized by Scanning Electron Microscopy (SEM), thermal analysis, X-ray diffraction and Fourier transform Infrared Spectroscopy (FT-IR).

Characterization and Electrochemical Performances of Vanadium Oxide Films Doped with Metal Ions

2013 ◽  
Vol 537 ◽  
pp. 174-178
Author(s):  
Ji Chao Wang ◽  
Guang Ming Wu ◽  
Guo Hua Gao ◽  
Xiao Wei Zhou
Keyword(s):  
Metal Ions ◽  
Vanadium Oxide ◽  
Volume Fraction ◽  
Electrochemical Impedance ◽  
Sol Gel ◽  
Electrochemical Techniques ◽  
Oxide Films ◽  
Dip Coating ◽  
Electrochemical Performances ◽  
Vanadium Oxide Films

Vanadium oxide films were prepared via the sol–gel process and dip coating method, using V2O5as raw materials and H2O2(volume fraction 30) as the solvent. Mn and Ni ions were added to vanadium oxide sol to prepare doping vanadium oxide films. The films were characterized by atomic force microscopy, FT-IR, X-ray diffraction and electrochemical techniques. The add-on of Metal ions will not affect the morphology of the vanadium oxide films, but change the valence of vanadium ion and vanadium oxide crystal phase. Furthermore, cyclic voltammetry curves show that metal ions doping vanadium oxide films exhibit reversible electrochemical reaction. But electrochemical impedance spectroscopy indicates pure vanadium oxide film has a better diffusion rate.

scholarly journals Influence of Ag-Dopant on Structural Optical and Electrical Properties of Cu(1-x)AgxO Thin Films Prepared By Chemical Spray Pyrolysis Technique

2018 ◽  
Vol 4 (5) ◽  
pp. 542-545 ◽  
Author(s):  
R. Shabu ◽  
A. Moses Ezhil Raj
Keyword(s):  
Thin Films ◽  
Band Gap ◽  
Spray Pyrolysis ◽  
Optical Band Gap ◽  
Spray Pyrolysis Technique ◽  
Precursor Solution ◽  
Oxide Semiconductor ◽  
Chemical Spray Pyrolysis ◽  
Chemical Spray Pyrolysis Technique ◽  
Chemical Spray

As major attention has been paid to transition metal oxide semiconductor suitable for solar cell, photo detector and gas sensor, present study embark on the structural, optical and electrical characterization of Ag doped CuO thin films prepared using chemical spray pyrolysis technique at the constant substrate temperature of 350 �C. For Ag doping, various concentrations of silver acetate (0.5-3.0 wt.%) was used in the sprayed precursor solution. Confirmed monoclinic lattice shows the tenorite phase formation of CuO in the pure and Ag doped films. The optical band gap of the films was in the range of 2.4 -3.4 eV. A minimum resistivity of 0.0017x103 ohmcm was achieved in the 0.5 wt.% Ag doped film, and its optical band gap was 2.74 eV.

Investigation on V2O5 Thin Films Prepared by Spray Pyrolysis Technique

2018 ◽  
Vol 17 (03) ◽  
pp. 1760037 ◽  
Author(s):  
A. Nancy Anna Anasthasiya ◽  
K. Gowtham ◽  
R. Shruthi ◽  
R. Pandeeswari ◽  
B. G. Jeyaprakash
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Optical Properties ◽  
Spray Pyrolysis ◽  
Glass Substrate ◽  
Spray Pyrolysis Technique ◽  
Precursor Solution ◽  
Xrd Pattern ◽  
Good Crystallinity ◽  
Solution Volume

The spray pyrolysis technique was employed to deposit V2O5 thin films on a glass substrate. By varying the precursor solution volume from 10[Formula: see text]mL to 50[Formula: see text]mL in steps of 10[Formula: see text]mL, films of various thicknesses were prepared. Orthorhombic polycrystalline V2O5 films were inferred from the XRD pattern irrespective of precursor solution volume. The micro-Raman studies suggested that annealed V2O5 thin film has good crystallinity. The effect of precursor solution volume on morphological and optical properties were analysed and reported.

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