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Optical properties of lithium borate glass (Li2O)x (B2O3)1-x


Mohamed Kamari, Halimah and Chiew, W. H. and Abd. Aziz, Sidek and Wan Yusoff, Wan Mohamad Daud and Abd. Wahab, Zaidan and Matori, Khamirul Amin and Mustafa, Iskandar Shahrim (2014) Optical properties of lithium borate glass (Li2O)x (B2O3)1-x. Sains Malaysiana, 43 (6). pp. 899-902. ISSN 0026-6039


A series of (Li2O)x(B2O3)1-x has been synthesized with mole fraction x=0.10, 0.15,0.20,0.25 and 0.30 mol% using melt quenching method. The structure of the glass system was determined by FTIR and X-ray diffraction. The density and molar volume were determined and the density increases with Li2O content whereas molar volume decreases with Li2O. Refractive index of glass samples were measured by ellipsometer. Refractive index increases with increase of Li2O. The absorption spectra of the studied glass showed that position of fundamental absorption edge shifts to longer wavelength with Li2O. Optical band gap varies from 0.10 to 2.22 eV and Urbach energy varies from 2.91 to 1.55 eV. The variation in optical band gap and Urbach energy were due to the variation in the glass structure.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Publisher: Universiti Kebangsaan Malaysia
Keywords: Borate glass; Optical band gap; Refractive index
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 19 Jan 2016 05:12
Last Modified: 19 Jan 2016 05:14
URI: http://psasir.upm.edu.my/id/eprint/34756
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