Oriented and Non-Oriented HfO2-Y2O3 Films on Amorphous Quartz Glass Substrates Prepared by Sol-Gel Processes

2000 ◽  
Vol 39 (Part 2, No. 3A/B) ◽  
pp. L237-L240 ◽  
Author(s):  
Toshikazu Nishide ◽  
Shinji Honda ◽  
Masaharu Matsuura ◽  
Yoshiaki Ito ◽  
Tsugiko Takase
Keyword(s):  
Quartz Glass ◽  
Sol Gel ◽  
Glass Substrates ◽  
Amorphous Quartz

Solid Phase Growth of some Metal and Metal Oxide Thin Films on Sapphire and Quartz Glass Substrates

2013 ◽  
Vol 753 ◽  
pp. 505-509
Author(s):  
Yuichi Sato ◽  
Toshifumi Suzuki ◽  
Hiroyuki Mogami ◽  
Fumito Otake ◽  
Hirotoshi Hatori ◽  
...  
Keyword(s):  
Thin Films ◽  
Quartz Glass ◽  
Glass Substrate ◽  
Solid Phase ◽  
Quartz Glass Substrate ◽  
Heteroepitaxial Growth ◽  
Phase Growth ◽  
Single Crystalline ◽  
Glass Substrates ◽  
Amorphous Quartz

Solid phase growth of thin films of copper (Cu), aluminum (Al) and zinc oxide (ZnO) on single crystalline sapphire and quartz glass substrates were tried by heat-treatments and their crystallization conditions were investigated. ZnO thin films relatively easily recrystallized even when they were deposited on the amorphous quartz glass substrate. On the other hand, Cu and Al thin films hardly recrystallized when they were deposited on the quartz glass substrate. The metal thin films could be recrystallized at only extremely narrow windows of the heat-treatment conditions when they were deposited on the single crystalline sapphire substrate. The window of the solid phase heteroepitaxial growth condition of the Al film was wider than that of the Cu film.

Properties of Hexagonal Wurtzite Mg0.33Zn0.67O Films on Quartz Glass Substrates

2011 ◽  
Vol 337 ◽  
pp. 612-615
Author(s):  
Quan Sheng Liu ◽  
Xi Yan Zhang ◽  
Xiao Chun Wang ◽  
Zhao Hui Bai ◽  
Neng Li Wang ◽  
...  
Keyword(s):  
Grain Size ◽  
Absorption Spectrum ◽  
Quartz Glass ◽  
Sol Gel ◽  
Hexagonal Wurtzite Structure ◽  
Xrd Analysis ◽  
Excitation Peak ◽  
Lattice Constants ◽  
Glass Substrates ◽  
Average Grain Size

Mg0.33Zn0.67Ofilms were prepared on quartz glass substrates by Sol-Gel method. Structures and optical properties of Mg0.33Zn0.67Ofilms were studied. The results of XRD analysis indicates that the Mg0.33Zn0.67Ofilm is hexagonal wurtzite structure and the lattice constants a and c are 0.3265nm and 0.5218 nm respectively. Lattice constants a and c of the Mg0.33Zn0.67O film increased because of the addition of Mg. The image of SEM shows that the Mg0.33Zn0.67O film is homogeneous and its average grain size is about 40nm. The absorption spectrum of the sample reveals that the absorption edge of Mg0.33Zn0.67O film located at 312.3nm and the corresponding forbidden band width is 3.97eV. is by three peaks ，which located at 383.9nm，442.6nm and 532.9nm respectively，constitute the luminescence spectrum of the film. The excitation peak located at 379.9nm.

Structure and Optical Properties of Mg0.5Zn0.5O Films

2011 ◽  
Vol 337 ◽  
pp. 383-386
Author(s):  
Quan Sheng Liu ◽  
Xi Yan Zhang ◽  
Xiao Chun Wang ◽  
Zhao Hui Bai ◽  
Neng Li Wang ◽  
...  
Keyword(s):  
Grain Size ◽  
Optical Properties ◽  
Quartz Glass ◽  
Absorption Edge ◽  
Sol Gel ◽  
Sem Image ◽  
Glass Substrates ◽  
Average Grain Size ◽  
Solar Blind ◽  
Cubic Structure

Mg0.5Zn0.5O films were prepared on quartz glass substrates by sol-gel method. Structure and optical properties of Mg0.5Zn0.5O film were studied.Results indicated that Mg0.5Zn0.5O film deposited on quartz glass is composed of two structures of ZnO hexagonal and MgO cubic. SEM image revealed that the film was homogenous and the average grain size of crystal was 40nm.Absorption spectrum indicated the absorption edge of hexagonal and cubic structures located in 332nm and 271nm respectively.The absorption edge of cubic structure locates in the solar blind region.The luminescence spectrum of sample is composed of three peaks at 383.7nm(3.23eV)，442.9nm(2.80eV) and 533.9nm(2.32eV) respectively.The peak of excitation spectrum is at 379nm(3.28eV).

Sol-gel growth of Ni doped CdS on glass substrates: effect of spin coating speed and dopant concentration

2020 ◽  
Vol 10 ◽  
Author(s):  
Atefeh Nazari Setayesh ◽  
Hassan Sedghi
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Spin Coating ◽  
Optical Band Gap ◽  
Dopant Concentration ◽  
Rotation Speed ◽  
Sol Gel ◽  
Band Gap Energy ◽  
Gap Energy ◽  
Glass Substrates

Background: In this work, CdS thin films were synthesized by sol-gel method (spin coating technique) on glass substrates to investigate the optical behavior of the film. Methods: Different substrate spin coating speeds of 2400, 3000, 3600 rpm and different Ni dopant concentrations of 0 wt.%, 2.5 wt.%, 5 wt.%) were investigated. The optical properties of thin films such as refraction index, extinction coefficient, dielectric constant and optical band gap energy of the layers were discussed using spectroscopic ellipsometry method in the wavelength range of 300 to 900 nm. Results: It can be deduced that substrate rotation speed and dopant concentration has influenced the optical properties of thin films. By decreasing rotation speed of the substrate which results in films with more thicknesses, more optical interferences were appeared in the results. Conclusion: The samples doped with Ni comparing to pure ones have had more optical band gap energy.

Microstructural, Optical and Electrical Properties of ZnO:Sn Thin Films Deposited by Sol-Gel Method

2013 ◽  
Vol 652-654 ◽  
pp. 519-522
Author(s):  
Jun Chen ◽  
Yue Hui Hu ◽  
Hong Hao Hu ◽  
Yi Chuan Chen
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
Sol Gel ◽  
Hexagonal Structure ◽  
Optical And Electrical Properties ◽  
Axis Orientation ◽  
Gel Method ◽  
Sol Gel Method ◽  
Sn Doping ◽  
Glass Substrates

Transparent thin films of Sn-doped ZnO (ZnO:Sn) were deposited onto silica glass substrates by the sol–gel method. The effect of different Sn doping on the crystallinity, structural, optical and electrical properties of ZnO:Sn thin films were investigated by XRD, SEM, UV-VIS spectrophotometer and four-point probe method respectively. Among all of ZnO:Sn thin films in this paper, Sn-doped with 2 at.% exhibited the best properties, the surface demonstrate an accumulative crystallization and hexagonal structure, with a high-preferential c-axis orientation, namely an average transmittance of 90% and the resistivity of 19.6 Ω·cm.

Pulsed laser deposition of oriented V2O5 thin films

2000 ◽  
Vol 15 (10) ◽  
pp. 2249-2265 ◽  
Author(s):  
Jeanne M. McGraw ◽  
John D. Perkins ◽  
Falah Hasoon ◽  
Philip A. Parilla ◽  
Chollada Warmsingh ◽  
...  
Keyword(s):  
Thin Films ◽  
Pulsed Laser Deposition ◽  
Oxygen Pressure ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Glass Substrates ◽  
Wide Range ◽  
Phase Pure ◽  
Amorphous Quartz ◽  
Quartz Substrates

We have found that by varying only the substrate temperature and oxygen pressure five different crystallographic orientations of V2O5 thin films can be grown, ranging from amorphous to highly textured crystalline. Dense, phase-pure V2O5 thin films were grown on SnO2/glass substrates and amorphous quartz substrates by pulsed laser deposition over a wide range of temperatures and oxygen pressures. The films' microstructure, crystallinity, and texturing were characterized by electron microscopy, x-ray diffraction, and Raman spectroscopy. Temperature and oxygen pressure appeared to play more significant roles in the resulting crystallographic texture than did the choice of substrate. A growth map summarizes the results and delineates the temperature and O2 pressure window for growing dense, uniform, phase-pure V2O5 films.

scholarly journals Optical and Physical Properties of Methyltrimethoxysilane Transparent Film Incorporated with Nanoparticles

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
W. Ahliah Ismail ◽  
Zainal Abidin Ali ◽  
R. Puteh
Keyword(s):  
Room Temperature ◽  
Sol Gel ◽  
Coating System ◽  
Transparent Film ◽  
Glass Substrates ◽  
Scratch Hardness ◽  
Coated Film ◽  
Light Diffusion ◽  
Nanoparticles Of Silver ◽  
Trimethoxy Silane

Methyltrimethoxysilane has been used as a base in the formation of transparent sol-gel coatings on glass substrates. Several types of alcohol were used as solvents in order to obtain the highest transparency and scratch hardness of the film. The coating cures at room temperature (26∘C). The clarity of the coated film on the glass substrate was measured using haze meter. The best formulation based on the lowest haze values and light diffusion is the ratio of 1 : 1 trimethoxy silane to N-propanol. The haze value obtained for this system is 0.86, and the light diffusion was measured at 0.77%. Tack-free time and hardness were within acceptable value. Nanoparticles of silver, zinc oxide, and titanium dioxide were incorporated into the coating system from 0.5% to 2.5% by weight, and the haze values of the dried film were measured. The highest transparency was obtained from the samples that were mixed with 0.5% silver. The haze value for this sample is of 0.5.

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