Studies on acetone sensing characteristics of ZnO thin film prepared by sol–gel dip coating

2016 ◽  
Vol 673 ◽  
pp. 138-143 ◽  
Author(s):  
Karthika Muthukrishnan ◽  
Manoj Vanaraja ◽  
Shanmugam Boomadevi ◽  
Rakesh Kumar Karn ◽  
Vijay Singh ◽  
...  
Keyword(s):  
Thin Film ◽  
Sol Gel ◽  
Dip Coating ◽  
Zno Thin Film ◽  
Sensing Characteristics

Preparation and Characterization of ZnO Thin Film Doped with Eu via Sol-Gel Method

2007 ◽  
Vol 336-338 ◽  
pp. 585-588 ◽  
Author(s):  
Dao Qi Xue ◽  
Jun Ying Zhang ◽  
Hai Bing Feng ◽  
Tian Min Wang
Keyword(s):  
Thin Film ◽  
Sol Gel ◽  
Luminescent Properties ◽  
Dip Coating ◽  
Luminescence Spectra ◽  
Zno Thin Film ◽  
Excitation Spectra ◽  
Coating Method ◽  
Dip Coating Method

ZnO:Eu3+ films were obtained by dip-coating method and influence of heat treatment on luminescent properties was investigated. Emission and excitation spectra revealed that the organic and nitrate molecules, which adhered on the surface of films when the samples were treated at lower temperatures (300oC-400oC), played an important role on the luminescent properties. At higher temperatures (500oC-800oC), the luminescence spectra of ZnO and Eu3+ were quite different with those treated at lower temperatures. Energy transferred from ZnO host to Eu3+ was obviously observed in the emission and excitation spectra. The luminescence mechanism was discussed briefly.

Effect of Annealing Temperatures and Pre-Heating on the Characteristics of a Nanocrystalline Zno Thin Film Prepared by the Sol-Gel Dip-Coating Method

2008 ◽  
Vol 63 (7-8) ◽  
pp. 440-444 ◽  
Author(s):  
Mohammad Hossein Habibi ◽  
Mohammad Khaledi Sardashti
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Annealing Temperature ◽  
Sol Gel ◽  
Dip Coating ◽  
Zno Thin Films ◽  
Zno Thin Film ◽  
Annealing Temperatures ◽  
Coating Method ◽  
Dip Coating Method

For effectively fabricating nanocrystalline ZnO thin films by the sol-gel method, the relationships between the temperature of the heat treatment and the quality of the ZnO thin films was observed. The decomposition of the sol was analyzed by TG-DTA. The orientation of the c-axis of the ZnO thin film was identified by XRD. The morphology was observed and estimated by SEM. The experimental results did show that the orientation of the c-axis is determined by the pre-heating and annealing temperatures, and that the grain size and roughness of the ZnO thin films are mainly influenced by the annealing temperature. A qualified ZnO thin film was prepared by using a sol-gel with a preheating temperature of 275 °C for 10 min and an annealing temperature of 550 °C for 60 min.

Numerical simulation of the liquid phase in SnO2 thin film deposition by sol-gel-dip-coating

2010 ◽  
Vol 55 (3) ◽  
pp. 385-393 ◽  
Author(s):  
Dayene M. Carvalho ◽  
Jorge L. B. Maciel ◽  
Leandro P. Ravaro ◽  
Rogério E. Garcia ◽  
Valdemir G. Ferreira ◽  
...  
Keyword(s):  
Thin Film ◽  
Numerical Simulation ◽  
Liquid Phase ◽  
Sol Gel ◽  
Thin Film Deposition ◽  
Dip Coating ◽  
Film Deposition ◽  
Sno2 Thin Film

Synthesis of WO3 Electrochromic Sensor by Sol-Gel Method and Characterization of Its Electrochemical and Optical Properties

2006 ◽  
Vol 317-318 ◽  
pp. 807-810 ◽  
Author(s):  
Chang Yeoul Kim ◽  
Jin Wook Choi ◽  
Tae Yeoung Lim ◽  
Duck Kyun Choi
Keyword(s):  
Thin Film ◽  
Sol Gel ◽  
Dip Coating ◽  
Xrd Pattern ◽  
Starting Solution ◽  
Oxide Crystal ◽  
Heat Treated ◽  
Coating Method ◽  
Dip Coating Method

Electrochromic WO3 thin film was prepared by using tungsten metal solution in hydrogen peroxide as a starting solution and by sol-gel dip coating method. XRD pattern showed that tungsten oxide crystal phase formed at 400. In the view of electrochemical property, WO3 thin film which was heat-treated at 300 and was amorphous had better than that of the crystalline phase.

scholarly journals Synthesis and Characterization of TiO2/SiO2 Monoliths as Photocatalysts on Methanol Oxidation

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Rigoberto Regalado-Raya ◽  
Rubí Romero-Romero ◽  
Osmín Avilés-García ◽  
Jaime Espino-Valencia
Keyword(s):  
Thin Film ◽  
Methanol Oxidation ◽  
Immersion Time ◽  
Film Formation ◽  
Anatase Phase ◽  
Sol Gel ◽  
Packed Bed ◽  
Dip Coating ◽  
Packed Bed Reactor ◽  
Titanium Butoxide

Photocatalytic materials based on silica-titania (SiO2-TiO2) were synthesized by sol-gel and dip-coating method. TEOS and titanium butoxide were used as precursors of the silica-titania, respectively. A thin film with anatase phase was obtained on the surface of the support. The effect of variables as dispersion mechanism, immersion time, and number of treatment cycles were studied. The materials were characterized using X-ray diffraction, scanning electron microscopy, energy dispersion scanning, and N2 adsorption-desorption. The highest crystallinity of TiO2 on silica, high specific surface area in TiO2-SiO2 materials, and thin film formation were obtained by using a stirring plate and minimum immersion time. The so synthesized catalyst allowed the production of formaldehyde from the photocatalyzed methanol oxidation in a packed-bed reactor.

scholarly journals Visible emission from Er-doped SnO2 thin films deposited by sol-gel

Cerâmica ◽  
2007 ◽  
Vol 53 (326) ◽  
pp. 187-191 ◽  
Author(s):  
L. P. Ravaro ◽  
E. A. Morais ◽  
L. V. A. Scalvi ◽  
M. Siu Li
Keyword(s):  
Thin Film ◽  
Electric Fields ◽  
Tin Dioxide ◽  
Sol Gel ◽  
Precursor Solution ◽  
Dip Coating ◽  
Sno2 Thin Film ◽  
Rare Earth Ion ◽  
Electron Hole ◽  
Er Doped

Emission from Er-doped SnO2 thin film deposited via sol-gel by the dip coating technique is obtained in the range 500-700 nm with peak at 530 nm (green). Electron-hole generation in the tin dioxide matrix is used to promote the rare-earth ion excitation. Evaluation of crystallite dimensions through X-ray diffraction results leads to nanoscopic size, what could play a relevant role in the emission spectra. The electron-hole mechanism is also responsible for the excitation of the transition in the 1540 nm range in powders obtained from the same precursor solution of films. The thin film matrix presents a very useful shape for technological application, since it allows integration in optical devices and the application of electric fields to operate electroluminescent devices.

scholarly journals pH Sensing Characteristics of CuS/ZnO Thin Film Implemented as EGFET

2018 ◽  
Vol 1083 ◽  
pp. 012055 ◽  
Author(s):  
Fayroz A. Sabah ◽  
Naser M. Ahmed ◽  
Z. Hassan
Keyword(s):  
Thin Film ◽  
Zno Thin Film ◽  
Ph Sensing ◽  
Sensing Characteristics
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