Optical, microstructural and vibrational properties of sol–gel ITO films

2021 ◽  
Vol 114 ◽  
pp. 110999
Author(s):  
M. Nicolescu ◽  
M. Anastasescu ◽  
J.M. Calderon-Moreno ◽  
A.V. Maraloiu ◽  
V.S. Teodorescu ◽  
...  
Keyword(s):  
Sol Gel ◽  
Vibrational Properties ◽  
Ito Films

Structural and Vibrational Properties of Ferroelectric Pb1-xSrxTiO3 Thin Films and Powders

2002 ◽  
Vol 748 ◽  
Author(s):  
M. Jain ◽  
A. Savvinov ◽  
P. S. Dobal ◽  
S. B. Majumder ◽  
R. S. Katiyar ◽  
...  
Keyword(s):  
Thin Films ◽  
Soft Mode ◽  
Ferroelectric Properties ◽  
Sol Gel ◽  
Vibrational Properties ◽  
X Ray Diffraction ◽  
Phase Transition Temperatures ◽  
Induced Changes ◽  
Pst System

ABSTRACTIn this work we present the structural, and vibrational properties of ferroelectric Pb1-xSrxTiO3 (PST). Thin films of PST were prepared by using sol-gel technique for various compositions with x values ranging from 0.0–1.0. Respective compositions were also prepared in ceramic and powder forms using sol-gel and solid-state reaction methods. X-ray diffraction was used for the structural characterization of these materials. Raman spectroscopy was utilized to study the phases and lattice vibrational modes, especially the soft mode in PST compositions. The temperature dependence of the soft mode frequency for different PST compositions revealed that the phase transition temperatures increased with increasing Pb contents in PST system. Ferroelectric properties of the films were correlated with the substitution-induced changes in the material.

Structural and Optical Properties of InSnO3 Sol-Gel Coatings to Use in Windows Glass Buildings

2010 ◽  
Vol 168-170 ◽  
pp. 2348-2351
Author(s):  
Lazaro De Jesus Dominguez Gallegos ◽  
Angélica Silvestre López Rodríguez ◽  
Pio Sifuentes Gallardo ◽  
Miguel Angel Hernández Rivera ◽  
María Guadalupe Garnica Romo ◽  
...  
Keyword(s):  
Optical Properties ◽  
Indium Tin Oxide ◽  
Sol Gel ◽  
Visible Region ◽  
Optical Transmittance ◽  
Indium Chloride ◽  
Glass Substrates ◽  
Tin Chloride ◽  
Ito Thin Films ◽  
Ito Films

Indium stannate (InSnO3) films doping with small amounts of copper are made highly useful as architectural window coatings. Indium-tin-oxide (ITO) has attracted intense interest due to some of its unique characteristics; it has high optical transmittance in the visible region, low electric resistivity, and chemical stability. Therefore, ITO thin films have been found to play an important role in opto-electronic applications. In this work, uniform and transparent ITO films were deposited onto glass substrates using a sol-gel process. The initial sols were prepared by mixing solutions of indium chloride prepared in anhydrous ethanol with tin chloride and mechanically stirring and refluxed 2 hours and aged 2 week, the resultant mixture until a clear and sticky coating sol was obtained. The glass substrates were spin-coated and annealed at 500 °C. Because annealing conditions affect the microstructures, the properties of the resultant ITO films can be controlled. The optical transmittance of 200 nm thick ITO film was more than 80% in the visible region. The surface morphology examined by SEM appears to be uniform over large surface areas. The structural, microstructural and optical properties of the coatings and powders made from the sols were extensively characterized by using XRD, AFM and spectrophotometer techniques

Influence of the substrate type on the microstructural, optical and electrical properties of sol–gel ITO films

2014 ◽  
Vol 71 (2) ◽  
pp. 303-312 ◽  
Author(s):  
L. Predoana ◽  
S. Preda ◽  
M. Nicolescu ◽  
M. Anastasescu ◽  
J. M. Calderon-Moreno ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Sol Gel ◽  
Optical And Electrical Properties ◽  
Substrate Type ◽  
Ito Films

Investigation of Annealing Effect on the Electrical and Optical Properties of ITO Film Prepared by Sol-Gel Process

2011 ◽  
Vol 84-85 ◽  
pp. 431-435
Author(s):  
Jing Li ◽  
Xiao Dong Zhao
Keyword(s):  
Annealing Temperature ◽  
Sol Gel ◽  
Visible Spectrum ◽  
Annealing Effect ◽  
Oxide Thin Film ◽  
Electrical And Optical Properties ◽  
Ito Film ◽  
Rapid Annealing ◽  
Sol Gel Process ◽  
Ito Films

Indium tin oxide thin film (ITO film) has been deposited onto the quartz glass by a sol-gel process, followed by annealing in air. The temperature range from 200 to 800 °C and the annealing effect on the optical, electrical and structural properties of ITO films has been studied in detail. ITO Films with a thickness of 100nm had an optical transparency up to 90% in the wavelength range of visible spectrum. The ITO film showed minimum resistivity of 1.65×10-3Ω.cm-1 when annealing temperature was 600°C in air. the rapid annealing process may contribute to the electrical property of ITO film for the densification of the micro structure. but the process may lead to the decrease of transparency for the reflection caused by grain boundary.

PREPARATION AND CHARACTERIZATION OF ITO THIN FILMS ON GLASS BY A SOL–GEL PROCESS USING METAL SALTS

2004 ◽  
Vol 03 (04n05) ◽  
pp. 447-454 ◽  
Author(s):  
C. SU ◽  
T.-K. SHEU ◽  
M.-A. WAN ◽  
Y.-T. CHANG ◽  
M.-C. FENG
Keyword(s):  
Electrical Resistivity ◽  
Indium Tin Oxide ◽  
Sol Gel ◽  
Visible Region ◽  
Optical Transmittance ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Preparation Conditions ◽  
Tin Chloride ◽  
Ito Films

Indium-tin-oxide (ITO) thin film is one of the indispensable materials for advanced optoelectric technologies. In this work, uniform and transparent ITO films were deposited onto glass substrates using a sol–gel method. The initial sols were prepared from anhydrous ethanol solutions of indium nitrate ( In ( NO 3)3·1 H 2 O ) and tin chloride ( SnCl 4), with different In:Sn ratios. The sols were dip-coated on the substrates and were subjected to annealing at different temperatures. Depending on compositions, the electrical resistivity of ITO coating varied from 1.4×103Ω/□ to 3.5×103Ω/□, and the minimum value for the electric resistivity was observed for the films containing 8% Sn by weight. Increasing heat treatment-temperatures from 400 to 600°C led to increase in conductivity by one order of magnitude. The optical transmittance of 550°C-annealed ITO films was more than 90% in the visible region. The morphology of the ITO films was examined by scanning tunneling microscopy (STM) and scanning electron microscopy (SEM). The rms-roughness of 350 nm thick ITO film was 1.5 nm. Increasing film thickness resulted in decrease in both, surface roughness and electrical resistivity. The correlations among the film properties and the film preparation conditions are discussed in detail.

Structural, optical and vibrational properties of sol–gel titania valproic acid reservoirs

2006 ◽  
Vol 29 (1) ◽  
pp. 82-87 ◽  
Author(s):  
T. Lopez ◽  
E. Ortiz-Islas ◽  
E. Vinogradova ◽  
J. Manjarrez ◽  
J.A. Azamar ◽  
...  
Keyword(s):  
Valproic Acid ◽  
Sol Gel ◽  
Vibrational Properties

Influence of Annealing Atmosphere on the Characteristics of Sol-Gel Derived ITO Thin Films

2013 ◽  
Vol 684 ◽  
pp. 279-284 ◽  
Author(s):  
Yu Ming Peng ◽  
Yan Kuin Su ◽  
Ru Yuan Yang
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
Indium Tin Oxide ◽  
Sol Gel ◽  
Dip Coating ◽  
Visible Range ◽  
Annealing Atmosphere ◽  
Optical And Electrical Properties ◽  
Ito Thin Films ◽  
Ito Films

In this paper, the Indium Tin Oxide (ITO) thin films were prepared by a sol-gel dip coating method and then annealed at 600°C under different atmosphere (vacuum, N2 and 96.25%N2+3.75%H2). Their microstructure, optical and electrical properties were investigated and discussed. Suitable atmosphere can improve the crystalline of the ITO films, therefore the optical and electrical properties of the ITO films are improved. The uv-vis results showed the maximum of transmittance in the visible range (380-780 nm) of 85.6% and the lowest resistivity of 4.4×10-2 Ω-cm when the ITO films were annealed under 96.25% N2 with 3.75% H2 atmosphere.

Preparation and Adhesion Study of Indium Tin Oxide Films on Quartz Optical Fibers

2010 ◽  
Vol 154-155 ◽  
pp. 738-742 ◽  
Author(s):  
Jing Liu ◽  
Bin Yang ◽  
Qi Kuang
Keyword(s):  
Optical Fibers ◽  
Indium Tin Oxide ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
Good Adhesion ◽  
Factors Affecting ◽  
Atomic Force ◽  
Sol Gel Process ◽  
Tin Oxide Films ◽  
Ito Films

Uniform and transparent ITO films were deposited onto quartz optical fibers through a sol-gel process, and the properties of the ITO films coated quartz optical fibers were investigated. Field emission scanning electron microscope (FE-SEM), atomic force microscope (AFM) techniques and X-ray diffraction (XRD) were used to characterize the performance and phase of ITO films, transmittance and resistivity were measured by ultraviolet-visible (UV-VIS) spectrophotometer and avometer. Results indicated that the films are homogeneous and smooth composed of In2O3 gain with sizes of 16.5 nm, which decides the value of the resistivity. Good adhesion between ITO films and the surface of quartz optical fibers was achieved, and factors affecting the morphology, structure, and properties of the deposited ITO films were also discussed.

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