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.

Influence of Annealing Temperature on Nanocrystalline ZnO Thin Films Prepared by Sol-Gel Dip Coating Method

2013 ◽  
Vol 678 ◽  
pp. 97-102
Author(s):  
K. Sivakumar ◽  
V. Senthil Kumar ◽  
Mariyappan Thambidurai ◽  
Thottipalayam Subramaniyan Senthil
Keyword(s):  
Thin Films ◽  
Grain Size ◽  
Band Gap ◽  
Annealing Temperature ◽  
Sol Gel ◽  
Dip Coating ◽  
Zno Thin Films ◽  
Coating Method ◽  
Dip Coating Method ◽  
Nanocrystalline Thin Films

ZnO nanocrystalline thin films have been prepared on glass substrates by sol-gel dip coating method. The ZnO thin films have been coated at room temperature for the pH value of 10 and annealed at 300°, 400° and 500°C respectively. The X- ray diffraction pattern shows that ZnO nanocrystalline thin films are of hexagonal structure and the grain size is found to be in the range of 25-45 nm. Scanning electron microscope images show that the surface morphology improves with increase of annealing temperature. The TEM analysis reveals the formation of ZnO nanocrystalline with an average grain size of 44 nm. The compositional analysis results show that Zn and O are present in the sample. The optical studies shows that the films are highly transparent and exhibit a direct band gap. The band gap has been found to lie in the range of 3.07 to 3.32 nm depending on the annealed temperature suggesting the formation of ZnO nanocrystalline thin films.

Optical, magnetic and structural properties of Cr-doped ZnO thin films by sol–gel dip-coating method

2017 ◽  
Vol 4 (9) ◽  
pp. 096403 ◽  
Author(s):  
Zohra N Kayani ◽  
Marya Siddiq ◽  
Saira Riaz ◽  
Shahzad Naseem
Keyword(s):  
Thin Films ◽  
Structural Properties ◽  
Sol Gel ◽  
Dip Coating ◽  
Zno Thin Films ◽  
Coating Method ◽  
Doped Zno ◽  
Dip Coating Method

Factors Affecting the Properties of Zinc Oxide Thin Films Prepared by Dip-Coating Method: A Review

2013 ◽  
Vol 667 ◽  
pp. 193-199 ◽  
Author(s):  
Mohd Firdaus Malek ◽  
Mohamad Hafiz Mamat ◽  
Mohamed Zahidi Musa ◽  
Mohd Zainizan Sahdan ◽  
Mohamad Rusop Mahmood
Keyword(s):  
Thin Films ◽  
Zinc Oxide ◽  
Sol Gel ◽  
Dip Coating ◽  
Zno Thin Films ◽  
Integrated Sensor ◽  
Factors Affecting ◽  
Oxide Electrodes ◽  
Coating Method ◽  
Dip Coating Method

Recent research papers for zinc oxide (ZnO) thin films prepared by dip-coating method are reviewed. The aim is on the factors affecting the properties of ZnO thin films prepared by dip-coating method and the preparation of ZnO solution precursor using sol-gel process. Several of journals have been discovered to find out the related study on this topic. It was found that solution chemical equilibrium, substrate and thermal processing are the factors that contribute to the various properties of ZnO thin films. This review hopefully can help in improving the properties of ZnO thin film for possible applications to photoconductor, integrated sensor, transparent conducting oxide electrodes, optoelectronic devices and so on.

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 temperature on nanocrystalline TiO2 thin films prepared by sol–gel dip coating method

Optik ◽  
2013 ◽  
Vol 124 (23) ◽  
pp. 6201-6204 ◽  
Author(s):  
A. Ranjitha ◽  
N. Muthukumarasamy ◽  
M. Thambidurai ◽  
R. Balasundaraprabhu ◽  
S. Agilan
Keyword(s):  
Thin Films ◽  
Annealing Temperature ◽  
Sol Gel ◽  
Dip Coating ◽  
Tio2 Thin Films ◽  
Nanocrystalline Tio2 ◽  
Coating Method ◽  
Dip Coating Method
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