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Optical absorption spectrum of Cu2O-CaO-P2O5 glasses

Talib, Zainal Abidin and Wan Yusof, Wan Mohamad Daud and Mohd Tarmizi, Emma Ziezie and Abd. Aziz, Sidek and Mat Yunus, W. Mahmood (2008) Optical absorption spectrum of Cu2O-CaO-P2O5 glasses. Journal of Physics and Chemistry of Solids, 69 (8). pp. 1969-1973. ISSN 0022-3697

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Homogeneous CaO–P2O5 and Cu2O–CaO–P2O5 glasses were prepared using a melt-quenched method under controlled conditions. The binary glasses were found to be colourless and transparent while the ternary glasses changed from light green to dark green as the Cu2O content increased. From the absorption edge studies, the values of the optical band gap, Eopt and Urbach energy, ΔE were evaluated. The position of the absorption edge and hence the optical band gap were found to depend on the glass composition. Analysis of the optical band gap shows that for the binary glasses, the value increases as the content of CaO decreases, while for the ternary glasses, the value of the optical band gap increases as the content of the Cu2O decreases. The density of the glasses was also measured and was found to increase with the increase in CaO and Cu2O contents.

Item Type:Article
Keyword:A. Glass, A. Optical materials, D. Optical properties
Faculty or Institute:Faculty of Science
DOI Number:10.1016/j.jpcs.2008.02.005
ID Code:7010
Deposited By: Najwani Amir Sariffudin
Deposited On:31 May 2010 17:15
Last Modified:27 Jul 2010 12:58

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