Studies of electrical and optical properties of Sn doped and undoped ZnO thin films by the spray pyrolysis method

Spherical particles of Zn doped MgO were prepared by one-step spray pyrolysis method. The crystalline nature and particle size of the samples were characterized by X-ray diffraction analysis (XRD). The morphology of samples was studied by scanning electron microscope (SEM) and the presence of Zn in the sample was confirmed by energy dispersive X-ray analysis (EDX). The optical properties of the samples were investigated using photoluminescence spectroscopy (PL) analysis to obtain excitation and emission spectra of the samples. Results indicated that the doped MgO particles exhibited a cubic structure without hexagonal wurtzite structure as the Zn concentrations were increased. Spherical shape and porous particles are found with increasing of doping concentration. The optical band gap of MgO altered with the addition of doping concentration. A considerable redshift of about ~0.08 – 0.13 eV in the excitation spectra of 2.22 eV emission band was revealed in Zn doped MgO samples. It was highlighted that Zn doped MgO prepared by the spray pyrolysis generated emission at UV-Vis wavelength required for many applications.

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Properties of Y-Ba-Cu-O Film Formed by the Spray Pyrolysis Method

MRS Proceedings ◽

10.1557/proc-99-331 ◽

1987 ◽

Vol 99 ◽

Cited By ~ 1

Author(s):

Maki Kawai ◽

Tomoji Kawai ◽

Hiromi Masuhira ◽

Makoto Takahasi

Keyword(s):

Spray Pyrolysis ◽

Crystal Surface ◽

Orthorhombic Phase ◽

Spray Pyrolysis Method ◽

Single Crystal Surface ◽

X Ray Diffraction ◽

Phase Effect ◽

X Ray ◽

Oriented Film ◽

Pyrolysis Method

ABSTRACTAn oriented film of YBa2Cu3O7−x superconductor was formed by a spray pyrolysis method. The temperature dependence of resistance showed the Tc-onset at 95K and Tc-zero at 83K with the film on a cubic zirconia single crystal surface. The X-ray diffraction pattern showed that the structure of the film was pure orthorhombic phase. Effect of the substrates and the modification of the substrates surface to form superconductive films are presented.

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Hyperthermia Effect on Phantom of Breast Carcinoma Tissue Induced by Mn3O4 Nanoparticles Synthesized by One-Step Spray Pyrolysis Method

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.853.56 ◽

2020 ◽

Vol 853 ◽

pp. 56-60

Author(s):

Alexa Gaona-Esquivel ◽

Diana S. Hernández-Manzo ◽

Perla J. Sánchez-Trujillo ◽

Oscar E. Cigarroa-Mayorga ◽

Miguel Meléndez-Lira

Keyword(s):

Spray Pyrolysis ◽

Single Phase ◽

Average Diameter ◽

Spray Pyrolysis Method ◽

X Ray Diffraction ◽

Manganese Oxide Nanoparticles ◽

X Ray ◽

Pyrolysis Method ◽

One Step ◽

Microscopy Images

In this work, the synthesis of manganese oxide nanoparticles was achieved by one-step spray pyrolysis method. The nanoparticles were synthesized just from MnCl2 aqueous solution. The solution was nebulized to a Si substrate placed at 400 °C for 1, 5 10 and 20 min and transported at a 0.1 L /min rate in a Nitrogen flux. The X-ray diffraction confirms tetragonal Mn3O4 as the unique phase in the whole sample. The scanning electron microscopy images proved the achievement of irregular nanoparticles with an average diameter of 280 nm experimentally determined by dynamic light scattering. Energy dispersive X-ray and Raman spectroscopy confirmed that the nanoparticles were obtained with Mn3O4 single-phase and the employed methodology prevented any contamination. The nanoparticles proved to induce temperature enhancement on artificial breast tissue by exposition to microwave radiation by achieving an increase in temperature around 8 %.

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Ultraviolet and violet-blue emission of Zn doped MgO/mg(OH)2 particles prepared by one step spray pyrolysis method

Journal of Powder Technology and Advanced Functional Materials ◽

10.29253/jptafm.1.1.2018.8 ◽

2018 ◽

Vol 1 (1) ◽

pp. 48-56

Author(s):

Fenfen Fenda Florena ◽

◽

Dwindra Wilham Maulana ◽

Ferry Faizal ◽

Bambang Mukti Wibawa ◽

...

Keyword(s):

Spray Pyrolysis ◽

Doping Concentration ◽

Blue Emission ◽

Spherical Shape ◽

Spherical Particles ◽

Spray Pyrolysis Method ◽

Excitation Spectra ◽

X Ray ◽

Pyrolysis Method ◽

One Step

Spherical particles of Zn doped MgO were prepared by one-step spray pyrolysis method. The crystalline nature and particle size of the samples were characterized by X-ray diffraction analysis (XRD). The morphology of samples was studied by scanning electron microscope (SEM) and the presence of Zn in the sample was confirmed by energy dispersive X-ray analysis (EDX). The optical properties of the samples were investigated using photoluminescence spectroscopy (PL) analysis to obtain excitation and emission spectra of the samples. Results indicated that the doped MgO particles exhibited a cubic structure without hexagonal wurtzite structure as the Zn concentrations were increased. Spherical shape and porous particles are found with increasing of doping concentration. The optical band gap of MgO altered with the addition of doping concentration. A considerable redshift of about ~0.08 – 0.13 eV in the excitation spectra of 2.22 eV emission band was revealed in Zn doped MgO samples. It was highlighted that Zn doped MgO prepared by the spray pyrolysis generated emission at UV-Vis wavelength required for many applications.

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Investigation of the Temperature on the Thin Layers of Cobalt Oxide Produced by the Spray Pyrolysis Method Using a Solar Oven

Annals of West University of Timisoara - Physics ◽

10.2478/awutp-2021-0012 ◽

2021 ◽

Vol 63 (1) ◽

pp. 163-176

Author(s):

Abderrezak Gharbi ◽

Said Benramache ◽

Lahcen Fella ◽

Aziez Zedouri

Keyword(s):

Spray Pyrolysis ◽

Cobalt Oxide ◽

Film Structure ◽

Thin Layers ◽

Spray Pyrolysis Method ◽

Processing Temperature ◽

X Ray Diffraction ◽

X Ray ◽

Pyrolysis Method ◽

Production Temperature

Abstract Thin films of cobalt oxide (Co3O4) were prepared on glass substrates by the spray pyrolysis method using a solar concentrator (oven) manufactured in our laboratory. We used different processing temperatures (300° C, 350° C and 400° C). The structural, optical and electrical properties of the different samples were analyzed by X-ray diffraction (XRD), UV-Visible spectroscopy and the Hall effect measurement system. X-ray diffraction observations revealed that cubic crystals are created in all films produced, and the film structure is that of a single phase created with preferential orientation along the (311) axis in films at low temperatures, and the axis (111) for high temperatures. The grain sizes of our products vary between (22.62nm and 66.19nm), depending on the processing temperature. The optical band gap of the crystals obtained was measured. The results of the optical forbidden bands of the crystals obtained, indicated two bands of the values for each element (Eg1 and Eg2). We observed that the values of the effective optical forbidden bands increase by 2.547eV and 3.0731eV with the increase in the production temperature., In addition the film produced experiences a decrease in the Urbach parameters which vary between 162.20meV and 360.81meV depending on the increase in production temperatures. Finally, the films produced have electrical conductivity values of (1.090 [(Ω.cm)−1] to 1.853 [(Ω.cm)−1] and electrical resistivity values of 1.431 (Ω.cm) at 1.853 (Ω.cm), depending on the variation in the production temperature.

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Superconducting YBCO Films Prepared by Electrodeposition and Spray Pyrolysis

MRS Proceedings ◽

10.1557/proc-868-c5.6 ◽

2005 ◽

Vol 868 ◽

Author(s):

S. Phok ◽

P.D. Spagnol ◽

T. Chaudhuri ◽

R.N. Bhattacharya

Keyword(s):

Critical Current Density ◽

Substrate Temperature ◽

Spray Pyrolysis ◽

Spray Pyrolysis Method ◽

Constant Voltage ◽

X Ray Diffraction ◽

Rocking Curve ◽

X Ray ◽

Pyrolysis Method ◽

Deposited Films

AbstractBiaxially textured YBa2Cu307-δ films were fabricated by non-vacuum electrodeposition and spray pyrolysis techniques. Electrodeposited YBCO was prepared on sputtered copper/single-crystal substrates. Electrodeposition was carried out at constant voltage and the deposition was completed in only few minutes. The thickness of the as-deposited films was in the range of 0.6 to 2 μm. The optimized sputtered copper layer thickness was about 200 Å on SrTiO3. In the spray pyrolysis method, the solution is sprayed directly onto SrTiO3 substrates. The substrate temperature is about 100°C. The thickness of the as-deposited films was in the range of 1.2 to 2μm. The electrodeposited and spray-deposited films were annealed at temperatures ranging from 800° to 920°C under various flowing gas mixtures. X-ray diffraction analysis revealed that processed electrodeposited and spray-deposited films were biaxially textured, where YBCO grains were well oriented along the c-axis and in the (a,b) plane. Δω, deduced from the rocking curve on the (005) reflection, was as low as 0.46°. Δφ, deduced from the phi-scan on the (103) reflection, was as low as 0.54°. The critical current density for these types of films is about 0.5 MA/cm2at 77 K and 0 T.

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Effect of Heat Treatment on the Structural, Morphological and Optical Properties of Tin-Doped ZnO (x=0.0 and x=0.05) Thin Films

Defect and Diffusion Forum ◽

10.4028/www.scientific.net/ddf.293.53 ◽

2009 ◽

Vol 293 ◽

pp. 53-61

Author(s):

Abdullah Huda ◽

M.N. Norazia ◽

S. Shaari ◽

A.Amir Khadum

Keyword(s):

Optical Properties ◽

Film Growth ◽

Sol Gel ◽

Zno Films ◽

X Ray Diffraction ◽

X Ray ◽

Tin Chloride ◽

Vis Spectroscopy ◽

Structural Surface ◽

Molecular Bonding

The sol-gel method was used to obtain ZnO films doped with Sn at different annealing temperatures, 400°C, 500°C and 600°C. As a starting material, zinc acetate dehydrate was used, with 2-methoxyethanol and monoethanolamine as the solvent and stabilizer, respectively. The dopant source was tin chloride. The amounts of dopant in solution were Zn1-xSnxO: x = 0 and 5at.%. The proportion of dopant and Zn atoms are not the same in the film and in the solution. In other cases, the dopant proportion in the film is less than that in the solution. X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), UV-VIS spectroscopy and Raman spectroscopy were used to study the structural, surface morphological and optical properties of the films and the molecular bonding of the ZnO, respectively. It was concluded that the dopant amount, as well as the annealing temperature, modifies the film growth process and consequently the microstructure and surface morphology as well as the optical properties.

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High Performance Transparent Conducting Sb-Doped SnO2 Films Fabricated by Spray Pyrolysis

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.684.85 ◽

2013 ◽

Vol 684 ◽

pp. 85-89 ◽

Cited By ~ 1

Author(s):

Qian Zhao ◽

Xue Qing Xu ◽

Gang Xu

Keyword(s):

Optical Properties ◽

Spray Pyrolysis ◽

High Performance ◽

Spray Pyrolysis Method ◽

Infrared Emissivity ◽

Electrical And Optical Properties ◽

Transparent Conducting ◽

Pyrolysis Method ◽

Low Emission ◽

Structural Surface

Sb-doped SnO2 (ATO) films were successfully prepared by the spray-pyrolysis method with SnCl2•2H2O and SbCl3 as precursors. The structural, surface morphological, electrical and optical properties of the films were studied in details. The results indicated that all films consisted of tetragonal cassiterite SnO2 with preferred orientation along (110) and (200) crystal plane. A minimum resistivity as low as 1.59×10-3 Ω∙cm has been achieved. The infrared emissivity of the films on the surface of glass was ca. 0.36, which presents potential application in the low-emission window and building ceramics.

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