Photopyroelectric spectroscopy of Sb2O3 - ZnO ceramics

Zakaria, Azmi and Rizwan, Zahid and Hashim, Mansor and Shaari, Abdul Halim and Mat Yunus, W. Mahmood (2008) Photopyroelectric spectroscopy of Sb2O3 - ZnO ceramics. The European Physical Journal Special Topics, 153 (1). pp. 33-35. ISSN 1951-6355

Full text not available from this repository.

Official URL: http://dx.doi.org/10.1140/epjst/e2008-00387-6

Abstract

Photopyroelectric spectroscopy is used to study the band-gap energy of the ceramic (ZnO + xSb2O3), x = 0.1−1.5mol% and the ceramic (ZnO + 0.4mol%Bi2O3 + xSb2O3), x = 0−1.5mol% sintered at isothermal temperature,1280◦C, for 1 and 2 hours. The wavelength of incident light, modulated at 9Hz, is kept in the visible range and the photopyroelectric spectrum with reference to doping level is discussed. The band-gap energy is reduced from 3.2 eV, for pure ZnO, to 2.86, 2.83 eV for the samples without Bi2O3at 0.1mol% of Sb2O3 for 1 and 2 hours of sintering time, respectively. It is reduced to 2.83, 2.80 eV for the samples with Bi2O3 at 0 mol% of Sb2O3 for 1 and 2 hours of sintering time, respectively. The steepness factor σA which characterizes the slop of exponential optical absorption is discussed with reference to the doping level. The phase constitution is determined by XRD analysis; microstructure and compositional analysis of the selected areas are analyzed using SEM and EDX.

Item Type:Article
Keyword:Photopyroelectric spectroscopy, ceramics
Faculty or Institute:Faculty of Science
Publisher:Springer Verlag
DOI Number:10.1140/epjst/e2008-00387-6
Altmetrics:http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1140/epjst/e2008-00387-6
ID Code:6551
Deposited By: Najwani Amir Sariffudin
Deposited On:19 May 2010 07:45
Last Modified:19 May 2010 07:49

Repository Staff Only: item control page

Document Download Statistics

This item has been downloaded for since 19 May 2010 07:45.

View statistics for "Photopyroelectric spectroscopy of Sb2O3 - ZnO ceramics"


Universiti Putra Malaysia Institutional Repository

Universiti Putra Malaysia Institutional Repository is an on-line digital archive that serves as a central collection and storage of scientific information and research at the Universiti Putra Malaysia.

Currently, the collections deposited in the IR consists of Master and PhD theses, Master and PhD Project Report, Journal Articles, Journal Bulletins, Conference Papers, UPM News, Newspaper Cuttings, Patents and Inaugural Lectures.

As the policy of the university does not permit users to view thesis in full text, access is only given to the first 24 pages only.