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Photopyro-electric spectroscopic studies of ZnO-MnO2-Co3O4-V2O5 ceramics.

Photopyroelectric (PPE) spectroscopy is a nondestructive tool that is used to study the optical properties of the ceramics (ZnO + 0.4MnO2 + 0.4Co3O4 + xV2O5), x = 0–1 mol%. Wavelength of incident light, modulated at 10 Hz, was in the range of 300–800 nm. PPE spectrum with reference to the doping lev...

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Main Authors: Zakaria, Azmi, Rizwan, Zahid, Mohd Ghazali, Mohd Sabri
Format: Article
Language:English
English
Published: MDPI 2011
Online Access:http://psasir.upm.edu.my/id/eprint/24925/1/Photopyro-electric%20spectroscopic%20studies%20of%20ZnO-MnO2-Co3O4-V2O5%20ceramics..pdf
http://psasir.upm.edu.my/id/eprint/24925/
http://www.mdpi.com/
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spelling my.upm.eprints.249252015-11-23T02:07:39Z http://psasir.upm.edu.my/id/eprint/24925/ Photopyro-electric spectroscopic studies of ZnO-MnO2-Co3O4-V2O5 ceramics. Zakaria, Azmi Rizwan, Zahid Mohd Ghazali, Mohd Sabri Photopyroelectric (PPE) spectroscopy is a nondestructive tool that is used to study the optical properties of the ceramics (ZnO + 0.4MnO2 + 0.4Co3O4 + xV2O5), x = 0–1 mol%. Wavelength of incident light, modulated at 10 Hz, was in the range of 300–800 nm. PPE spectrum with reference to the doping level and sintering temperature is discussed. Optical energy band-gap (Eg) was 2.11 eV for 0.3 mol% V2O5 at a sintering temperature of 1025 °C as determined from the plot (ρhυ)2 versus hυ. With a further increase in V2O5, the value of Eg was found to be 2.59 eV. Steepness factor ‘σA’ and ‘σB’, which characterize the slope of exponential optical absorption, is discussed with reference to the variation of Eg. XRD, SEM and EDAX are also used for characterization of the ceramic. For this ceramic, the maximum relative density and grain size was observed to be 91.8% and 9.5 μm, respectively. MDPI 2011 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/24925/1/Photopyro-electric%20spectroscopic%20studies%20of%20ZnO-MnO2-Co3O4-V2O5%20ceramics..pdf Zakaria, Azmi and Rizwan, Zahid and Mohd Ghazali, Mohd Sabri (2011) Photopyro-electric spectroscopic studies of ZnO-MnO2-Co3O4-V2O5 ceramics. International Journal of Molecular Sciences, 12 (1). pp. 1625-1632. ISSN 1422-0067; ESSN:1422-0067 http://www.mdpi.com/ 10.3390/ijms12031625 English
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
English
description Photopyroelectric (PPE) spectroscopy is a nondestructive tool that is used to study the optical properties of the ceramics (ZnO + 0.4MnO2 + 0.4Co3O4 + xV2O5), x = 0–1 mol%. Wavelength of incident light, modulated at 10 Hz, was in the range of 300–800 nm. PPE spectrum with reference to the doping level and sintering temperature is discussed. Optical energy band-gap (Eg) was 2.11 eV for 0.3 mol% V2O5 at a sintering temperature of 1025 °C as determined from the plot (ρhυ)2 versus hυ. With a further increase in V2O5, the value of Eg was found to be 2.59 eV. Steepness factor ‘σA’ and ‘σB’, which characterize the slope of exponential optical absorption, is discussed with reference to the variation of Eg. XRD, SEM and EDAX are also used for characterization of the ceramic. For this ceramic, the maximum relative density and grain size was observed to be 91.8% and 9.5 μm, respectively.
format Article
author Zakaria, Azmi
Rizwan, Zahid
Mohd Ghazali, Mohd Sabri
spellingShingle Zakaria, Azmi
Rizwan, Zahid
Mohd Ghazali, Mohd Sabri
Photopyro-electric spectroscopic studies of ZnO-MnO2-Co3O4-V2O5 ceramics.
author_facet Zakaria, Azmi
Rizwan, Zahid
Mohd Ghazali, Mohd Sabri
author_sort Zakaria, Azmi
title Photopyro-electric spectroscopic studies of ZnO-MnO2-Co3O4-V2O5 ceramics.
title_short Photopyro-electric spectroscopic studies of ZnO-MnO2-Co3O4-V2O5 ceramics.
title_full Photopyro-electric spectroscopic studies of ZnO-MnO2-Co3O4-V2O5 ceramics.
title_fullStr Photopyro-electric spectroscopic studies of ZnO-MnO2-Co3O4-V2O5 ceramics.
title_full_unstemmed Photopyro-electric spectroscopic studies of ZnO-MnO2-Co3O4-V2O5 ceramics.
title_sort photopyro-electric spectroscopic studies of zno-mno2-co3o4-v2o5 ceramics.
publisher MDPI
publishDate 2011
url http://psasir.upm.edu.my/id/eprint/24925/1/Photopyro-electric%20spectroscopic%20studies%20of%20ZnO-MnO2-Co3O4-V2O5%20ceramics..pdf
http://psasir.upm.edu.my/id/eprint/24925/
http://www.mdpi.com/
_version_ 1643828505891307520
score 13.211869

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