Supported sol-gel thin-film glasses embodying laser dyes. III. Optically-clear silica glass thin-films prepared by the fast sol-gel method

1992 ◽  
Vol 4 (1) ◽  
pp. 89-94 ◽  
Author(s):  
Y. Haruvy ◽  
S. E. Webber
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Silica Glass ◽  
Sol Gel ◽  
Laser Dyes ◽  
Gel Method ◽  
Sol Gel Method

Photocatalytic Activities of Ce3+-Doped TiO2 Thin Films Prepared by Sol-Gel Method

2011 ◽  
Vol 239-242 ◽  
pp. 1850-1853
Author(s):  
Shu Kai Zheng
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Photocatalytic Activity ◽  
Sol Gel ◽  
Atomic Ratio ◽  
Gel Method ◽  
Sol Gel Method ◽  
Annealing Temperatures ◽  
Glass Slides ◽  
Photocatalytic Activities

A series of TiO2 thin films with and without Ce3+ doping were successfully obtained on microscope glass slides by sol-gel method. The photocatalytic activities of the pure TiO2 and Ce3+-doped TiO2 thin films were evaluated by the degradation of rhodamine B solution. The effects of both Ce3+ contents and annealing temperatures on the photocatalytic activities of the samples were examined. The results indicated that the TiO2 thin film with an atomic ratio of Ti:Ce=5:1 annealed at 300°C had a higher photocatalytic activity among the samples.

Preparation and Characterization of Li4/3Ti5/3O4 Thin Films by Sol-gel Method

2006 ◽  
Vol 972 ◽  
Author(s):  
C. Hu ◽  
W. Zhang ◽  
H. Hao ◽  
M. H. Cao ◽  
S. J. Lai ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Sol Gel ◽  
High Capacity ◽  
X Ray Diffraction ◽  
Gel Method ◽  
Sol Gel Method ◽  
Atomic Force ◽  
Good Crystallinity

AbstractIn the study Li4/3Ti5/3O4 thin films were deposited on Pt substrates by sol-gel method using a spin coator. The coated films are dried at 310-360 °C, and then annealed at 500-800 °C for 30min. The prepared films were characterized by X-ray diffraction, atomic force microscope and scanning electron microscope. The results indicated that the prepared film belonged to a spinel structure and had a uniform morphology. Electrochemical properties of the prepared electrode films were evaluated by using a discharge and charge test. From these results, it can be showed that the thin film electrode annealed at 700 °C exhibited good crystallinity, smooth surface morphology, high capacity, and good rechargeability. Therefore, This film was therefore suitable for use as an anode for thin-film microbatteries.

Synthesis Photocatalytic TiO2/ZnO Nanocomposite and Investigation through Anatase, Wurtzite and ZnTiO3 Phases Antibacterial Behaviors

2018 ◽  
Vol 51 ◽  
pp. 69-77 ◽  
Author(s):  
Hanif Mohammadi ◽  
Mohammad Ghorbani
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Antibacterial Activity ◽  
Uv Light ◽  
Sol Gel ◽  
Molar Ratio ◽  
Plate Count ◽  
Gel Method ◽  
Sol Gel Method ◽  
E Coli

Titanium dioxide is prepared by sol gel method from titanium tetraisopropoxide (TTIP) as precursor and likewise zinc oxide is prepared by sol gel method from zinc acetate dehydrate (ZAD) as precursor. The composite sols are prepared in three different molar ratios 90TiO2:10ZnO, 70TiO2:30ZnO and 50TiO2:50ZnO. Thin film deposition is carried out by dip coating technique. Crystal structure, surface morphology and photocatalytic activity of the prepared nanocomposite thin films are investigated. The antibacterial activity of the prepared nanocomposite thin film against E-coli ATCC 25922 bacteria is examined by placing the thin film in standard aqueous E-coli medium under UV light for 1, 2, 3 and 4 hours and then counting the bacteria with Standard Plate Count Agar (SPC) technique. The prepared thin films have shown strong antibacterial activity in the presence of UV light and by increasing the ZnO molar ratio from 10 to 50, antibacterial activity of the thin films decreases because of decreases in the anatase phase of the TiO2. In the dark conditions by increasing the molar ratio of ZnO, the antibacterial activity of the thin films increases and this phenomenon is related to increasing the zinc ions in the thin films.

Preparation of YSZ Thin Film on Porous Electrode of SOFC

1998 ◽  
Vol 547 ◽  
Author(s):  
H. Nagamoto ◽  
H. Ikewaki
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Hydrogen Permeation ◽  
Sintering Temperature ◽  
Sol Gel ◽  
Porous Electrode ◽  
Gel Method ◽  
Sol Gel Method ◽  
Ysz Thin Film ◽  
Gas Tight

AbstractPorous electrode substrate of La0.7Sr0.2MnO3 was used as the support for the deposition of YSZ thin films. The porosity of the electrode substrate was controlled by sintering temperature and particle size of powders. Thin films of YSZ were fabricated on the electrode by sol-gel method. The YSZ film fabricated by 10-fold coating with 0.05M YSZ sol containing TEA was continuous and crack-free one of 5 mm in thickness. However, hydrogen permeation measurement showed that there was a very small leakage of hydrogen in the fabricated film. In addition to sol-gel method, another technique such as EVD should be employed to make the film completely gas-tight.

Fabrication of VO2 Film in the Spin-Coating Way

2013 ◽  
Vol 745-746 ◽  
pp. 90-95
Author(s):  
Guo Jian Jiang ◽  
Shu Ping Yao ◽  
Yun Ying Liu ◽  
Jia Yue Xu ◽  
Hui Shen ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Spin Coating ◽  
Raw Materials ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method

VO2 thin films were obtained from V2O5 thin film in the thermal decompose process. V2O5 thin films were prepared in the spin-coating way and with V2O5 sol-gels as raw materials fabricated by the reformative inorganic sol-gel method. The effects of the viscosity of colloid on the fabrication of V2O5 film and the thermal decomposing temperature on the fabrication of VO2 film were studied. The results show that the appropriate viscosity of colloid to obtain well-distributed V2O5 film was in the range of 30g/L-40g/L and suitable thermal decomposing temperature was about 500°C.

Preparation and Properties of Ni-Si-O Thin Film Prepared by Sol-Gel Method

2007 ◽  
Vol 336-338 ◽  
pp. 799-801
Author(s):  
Rong Juan Zhao ◽  
Yuan Hua Lin ◽  
Jing Nan Cai ◽  
Ce Wen Nan ◽  
Dan Xie
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Phase Composition ◽  
Dielectric Properties ◽  
Electrical Property ◽  
Electric Field ◽  
Sol Gel ◽  
Si Substrate ◽  
Gel Method ◽  
Sol Gel Method

Ni-Si-O thin films on Si substrate have been prepared by a sol-gel method. The microstructure and phase composition of the films were investigated by XRD, SEM, FTIR. The XRD results showed that the films are amorphous while annealed at 800oC for 10 min, the SEM imagines proved that the films are smooth and thickness is about 190 nm. Electrical property of the film indicated that the leakage current was as low as 10-6A/cm2 at an electric field of 1MV/cm. The dielectric properties of Ni-Si-O thin films can be improved as increasing the annealed temperature.

The Dielectric and Tunable Properties of Graded Fe Doped PST Thin Films Fabricated by Sol-Gel Method

2011 ◽  
Vol 287-290 ◽  
pp. 2322-2326
Author(s):  
Xiao Hua Sun ◽  
Xiu Neng Li ◽  
Sheng Gang Zhou ◽  
Shuang Hou ◽  
Tian You Peng ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Sol Gel ◽  
Composition Gradient ◽  
X Ray Diffraction ◽  
Gel Method ◽  
Sol Gel Method ◽  
Tunable Properties ◽  
Lower Figure ◽  
Metal Insulator Metal

Fe doped up-graded and down-graded PST thin films were prepared on Pt/Ti/SiO2/Si with sol–gel method. Crystal structure and surface morphology of graded PST thin films were characterized by X-ray diffraction (XRD) and atom force microscope (AFM). The dielectric measurements were conducted on metal-insulator-metal capacitors at the frequency from 100 Hz to 1M Hz and at room temperature. It was found that the up-graded PST thin film had a larger dielectric constant and lower figure of merit (FOM) than the down-graded film. At 1M Hz, the tunability of up-graded PST thin film was about 65.48%, which was higher than that (about 41.84%) of down-graded PST thin film. The FOM of up-graded and down-graded PST thin films were 16.3 and 9.2, respectively. Our results showed that the dielectric tunable properties of the Fe doped graded PST films depended strongly on the direction of the composition gradient of the graded PST films.

The Effects of Solvents to ZnO:Al Transparent Conductive Thin Films Synthesized by Sol-Gel Method

2011 ◽  
Vol 320 ◽  
pp. 124-129
Author(s):  
Yung Kuan Tseng ◽  
Shih Chun Chien ◽  
Ming Hung Chuang ◽  
Chi Sheng Hsu ◽  
Yen Cheng Chen
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Sol Gel ◽  
Film Surface ◽  
Precursor Solution ◽  
Thin Film Deposition ◽  
Xrd Analysis ◽  
Film Deposition ◽  
Gel Method ◽  
Sol Gel Method

The purpose of this study was to discuss the effects of different solvent systems for aluminum doped zinc oxide (AZO) thin film deposition by using the sol-gel method. In the conventional sol-gel method of producing AZO thin films, the solution selected as the precursor solvent was used ethylene glycol monomethylether (EGME), which in this study propylene glycol mono-methyl ether (PGME) was used. The precursor solution was observed by TGA/DSC to understand the variations while heating. The two prepared precursor solutions were then respectively spin coated onto substrates of boron silicate glass. XRD analysis indicated both showed significant c-axis preferred orientation. The surface morphology of the films was observed by FESEM, which showed that the thin film surface by PGME solvent was smoother and dense. A four-point probe was used to measure the electrical resistance of the thin films, which the measured results indicated that the thin film produced by PGME had lower resistivity than those produced by EGME. Resulting with a thin film electric resistance reaching as low as 3.474×10-3(W×cm). The visible light transparency was determined via UV-vis analysis. Results showed that the average transparency of thin films produced by the EGME solvent reached 95% and above, where the average transparency from PGME solvent still reached 90% and above. Experimental results demonstrated that PGME is a good option to synthesize AZO thin films.

Structural and Optical Characterization of TiO2/ZnO Thin Films Prepared by Sol-Gel Method

2017 ◽  
Vol 888 ◽  
pp. 290-296
Author(s):  
Nur Syahraain Zulkiflee ◽  
Rosniza Hussin ◽  
Hasrul Yahya
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Optical Properties ◽  
Surface Morphology ◽  
Calcination Temperature ◽  
Sol Gel ◽  
Xrd Analysis ◽  
Zno Thin Films ◽  
Gel Method ◽  
Sol Gel Method

Thin film has been extensively study due to better structural, surface morphology, and optical properties. The combination of two materials will enhance the properties of thin film. In this study, TiO2/ZnO thin films were deposited on glass substrates via sol-gel method. TiO2 acts as pre-deposited thin film with calcination temperatures at 400 °C, 500 °C, and 600 °C. The post-deposition of TiO2/ZnO thin films were calcined at 500 °C and 600 °C. TiO2 sol-gel was synthesis from titanium (IV) butoxide and butanol as the precursor, while ZnO sol-gel was synthesis from zinc acetate dehydrate and isopropanol as the precursor. The TiO2/ZnO thin films were characterized by X-ray diffraction (XRD), atomic force microscope (AFM), and ultraviolet visible spectroscopy (UV-Vis). The effect of calcination temperature and pre-deposited TiO2 thin films show difference results of bilayer thin films. The XRD analysis shows all TiO2/ZnO thin films growth with TiO2 anatase crystalline phase at orientation (1 0 1) and ZnO zincite phase at orientation (1 0 1). The structural properties of TiO2/ZnO thin films were improved by controlling the calcination temperature. Based on AFM analysis, the RMS value for TiO2/ZnO decreases as the calcination temperature increased. The compacted and dense surface roughness were controlled by the temperature. Meanwhile, the percentage of thin film ultraviolet transmittance can be enhanced with combination of two materials, TiO2 and ZnO. Therefore, the pre-deposited layer of thin film with influenced by calcination temperature will improve the crystallinity, surface morphology, and optical properties of TiO2/ZnO thin films.

Fe2O3 - TiO2 THIN FILMS PREPARED BY SOL-GEL METHOD

2011 ◽  
Vol 10 (2) ◽  
pp. 187-192 ◽  
Author(s):  
Ramona-Crina Suciu ◽  
Marcela Corina Rosu ◽  
Teofil Danut Silipas ◽  
Emil Indrea ◽  
Violeta Popescu ◽  
...  
Keyword(s):  
Thin Films ◽  
Sol Gel ◽  
Tio2 Thin Films ◽  
Gel Method ◽  
Sol Gel Method
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