Photopyroelectric 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: Rizwan, Zahid, Zakaria, Azmi, Mohd Ghazali, Mohd Sabri
Format: Article
Language:English
Published: MDPI AG 2011
Online Access:http://psasir.upm.edu.my/id/eprint/36530/1/36530.pdf
http://psasir.upm.edu.my/id/eprint/36530/
http://www.mdpi.com/1422-0067/12/3/1625
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spelling my.upm.eprints.365302016-04-06T05:18:19Z http://psasir.upm.edu.my/id/eprint/36530/ Photopyroelectric spectroscopic studies of ZnO-MnO2-Co3O4-V2O5 ceramics Rizwan, Zahid Zakaria, Azmi 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 AG 2011-03-03 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/36530/1/36530.pdf Rizwan, Zahid and Zakaria, Azmi and Mohd Ghazali, Mohd Sabri (2011) Photopyroelectric spectroscopic studies of ZnO-MnO2-Co3O4-V2O5 ceramics. International Journal of Molecular Sciences, 12 (3). pp. 1625-1632. ISSN 1661-6596; ESSN: 1422-0067 http://www.mdpi.com/1422-0067/12/3/1625 10.3390/ijms12031625
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
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 Rizwan, Zahid
Zakaria, Azmi
Mohd Ghazali, Mohd Sabri
spellingShingle Rizwan, Zahid
Zakaria, Azmi
Mohd Ghazali, Mohd Sabri
Photopyroelectric spectroscopic studies of ZnO-MnO2-Co3O4-V2O5 ceramics
author_facet Rizwan, Zahid
Zakaria, Azmi
Mohd Ghazali, Mohd Sabri
author_sort Rizwan, Zahid
title Photopyroelectric spectroscopic studies of ZnO-MnO2-Co3O4-V2O5 ceramics
title_short Photopyroelectric spectroscopic studies of ZnO-MnO2-Co3O4-V2O5 ceramics
title_full Photopyroelectric spectroscopic studies of ZnO-MnO2-Co3O4-V2O5 ceramics
title_fullStr Photopyroelectric spectroscopic studies of ZnO-MnO2-Co3O4-V2O5 ceramics
title_full_unstemmed Photopyroelectric spectroscopic studies of ZnO-MnO2-Co3O4-V2O5 ceramics
title_sort photopyroelectric spectroscopic studies of zno-mno2-co3o4-v2o5 ceramics
publisher MDPI AG
publishDate 2011
url http://psasir.upm.edu.my/id/eprint/36530/1/36530.pdf
http://psasir.upm.edu.my/id/eprint/36530/
http://www.mdpi.com/1422-0067/12/3/1625
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