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Journal of Materials Science: Materials in Electronics
Published in: Journal of Materials Science: Materials in Electronics 5/2013

01-05-2013

Novel process for synthesis of α-Fe2O3: microstructural and optoelectronic investigations

Authors: S. T. Navale, D. K. Bandgar, S. R. Nalge, R. N. Mulik, S. A. Pawar, M. A. Chougule, V. B. Patil

Published in: Journal of Materials Science: Materials in Electronics | Issue 5/2013

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Abstract

Novel chemical synthesis method has been successfully employed for the preparation of n type α-Fe2O3 nanoparticles. Thin films of annealed Fe2O3 powders processed on glass substrates using spin coating technique. The effects of process temperature on the structural, morphological, electrical transport and optical properties were studied. X-ray diffraction study revealed formation of single phase nanocrystalline hexagonal α-Fe2O3. Microstructural analysis confirms nanostructured morphology. Dc electrical conductivity measurement reveled the semiconducting nature with room temperature electrical conductivity increased from 10−4 to 10−3 (Ω cm)−1 as process temperature of Fe2O3 increased from 400 to 700 °C respectively. The n-type electrical conductivity is confirmed from thermo-emf measurement with no appreciable change in thermoelectric power after increasing processing temperature. The decrease in the band gap energy from 3.88 to 2.62 eV was observed after increasing process temperature.
previous article A review on fabrication, sensing mechanisms and performance of metal oxide gas sensors
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Metadata
Title
Novel process for synthesis of α-Fe2O3: microstructural and optoelectronic investigations
Authors
S. T. Navale
D. K. Bandgar
S. R. Nalge
R. N. Mulik
S. A. Pawar
M. A. Chougule
V. B. Patil
Publication date
01-05-2013
Publisher
Springer US
Published in
Journal of Materials Science: Materials in Electronics / Issue 5/2013
Print ISSN: 0957-4522
Electronic ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-012-0944-x

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