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Experimental Investigation of Spray-Deposited Fe-Doped ZnO Nanoparticle Thin Films: Structural, Microstructural, and Optical Properties

DSpace at IIT Bombay

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Title Experimental Investigation of Spray-Deposited Fe-Doped ZnO Nanoparticle Thin Films: Structural, Microstructural, and Optical Properties
 
Creator PRAJAPATI, CS
KUSHWAHA, A
SAHAY, PP
 
Subject Fe-doping
optical properties
surface morphology
ZnO nanoparticle thin films
ROOM-TEMPERATURE FERROMAGNETISM
GAS SENSOR APPLICATIONS
PHOTOLUMINESCENCE PROPERTIES
SENSING CHARACTERISTICS
ZN1-XFEXO FILMS
OXIDE
ZINC
PYROLYSIS
NANOSTRUCTURES
NANOCRYSTALS
 
Description Structural, microstructural, and optical properties of the undoped and Fe-doped zinc oxide (ZnO) thin films grown by spray pyrolysis technique using zinc nitrate as a host precursor have been reported here. X-ray diffraction spectra confirm that all the films have stable wurtzite structure and the effects of Fe dopants on the diffraction patterns have been found to be in agreement with the Vegard's law. Scanning electron microscopy results show good uniformity and dense surface having spherical-shaped grains. Energy dispersive x-ray analyses with elemental mapping of the Fe-doped films show that the Fe dopants are incorporated homogeneously into the ZnO film matrix. The x-ray photoelectron spectroscopy spectra confirm the presence of 3+ oxidation state of Fe in the doped films. Atomic force microscopy analyses clearly show that the average surface roughness and the grain size decrease with the addition of Fe dopants. Optical studies reveal that the optical band gap value decreases on Fe doping. The 1 at.% Fe-doped film shows normal dispersion for the wavelength range 450-700 nm. The PL spectra of the films show a strong ultraviolet emission centered at similar to 388 nm in the case of 1 at.% Fe-doped film. A slow photo current response in the films has been observed in the transient photoconductivity measurement.
 
Publisher SPRINGER
 
Date 2014-10-15T12:54:46Z
2014-10-15T12:54:46Z
2013
 
Type Article
 
Identifier JOURNAL OF THERMAL SPRAY TECHNOLOGY, 22(7)1230-1241
http://dx.doi.org/10.1007/s11666-013-9973-0
http://dspace.library.iitb.ac.in/jspui/handle/100/14939
 
Language en