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Optical and gas sensing studies of transparent ZnO thin film deposited from a new precursor by ultrasonic aerosol assisted chemical vapor deposition | Hussain | European Journal of Chemistry

Optical and gas sensing studies of transparent ZnO thin film deposited from a new precursor by ultrasonic aerosol assisted chemical vapor deposition

Muzammil Hussain, Syed Tajammul Hussain

Abstract


Transparent semi-conducting ZnO thin films with low resistivity and high transmittance in the visible optical region were deposited by the decomposition of bis(2,4-pentanedionate)-bis(aminoethanol) zinc(II) under an atmosphere of oxygen on ceramic, metal and quartz substrates by ultrasonic aerosol assisted chemical vapor deposition. The precursor was synthesized from bis(2,4-pentanedionate) zinc(II) and aminoethanol by sonication in acetonitrile and was characterized by melting point, infrared spectroscopy, CHNS-O elemental, atomic absorption, and single crystal X-ray diffraction analysis. TGA-FTIR was used to identify the cause of the weight losses and evolved gases formed during the breakup of the molecules. Electrical and optical measurements showed that the ZnO film has a band gap of 3.02 eV and typical semiconductor properties with a resistivity that depends on the thickness of the film. Powder XRD, SEM and EDX show that films are uniform, smooth and crystalline in nature, giving particle sizes in the range of 30-60 nm and exhibit a (002) orientation with the c-axis perpendicular to the substrate surface.

1_2_96_101_800


Keyword(s)


New Precursor; ZnO; Thin Films; CVD; Gas Sensors; Ceramic Substrate

European Journal of Chemistry, 1 (2), (2010), 96-101

Full Text:

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DOI: http://dx.doi.org/10.5155/eurjchem.1.2.96-101.49

 

Cited-By

[1]. Simulation of SnO2/WO3 nanofilms for alcohol of gas sensor based on metal dioxides: MC and LD studies
Leila Mahdavian
Journal of Nanostructure in Chemistry  Volume: 3  Issue: 1  First page: 1  Year: 2012  
/

 


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