Band Gap Determination from Diffuse Reflectance Measurements of Irradiated Lead Borate Glass System Doped with TiO2 by Using Diffuse Reflectance Technique
Open Access
- 1 January 2013
- journal article
- Published by Scientific Research Publishing, Inc. in Materials Sciences and Applications
- Vol. 04 (05), 324-329
- https://doi.org/10.4236/msa.2013.45042
Abstract
Ultraviolet-visible UV-Vis diffuse reflectance measurements of irradiated lithium tetra-borate glass have been acquired using. Evolution 600 Spectrophotometer equipped with praying Mantis Diffuse Reflectance Accessory DRA base upon the onset of the diffuse reflectance spectra of the powdered or bulk materials. Also the absorption edge and band gap energies of the prepared glass were determined. The optical energy gap is calculated and found to be (3.0 - 3.5) eV. Which is in close agreement to the one calculated for r = 1/2, i.e. the transition mechanism, is accordingly direct allowed transition. The density increases from 3.1 to 3.9 gm/cm3 for the undoped and doped glass. </pKeywords
This publication has 7 references indexed in Scilit:
- In vivo behavior of bioactive phosphate glass-ceramics from the system P2O5–Na2O–CaO containing TiO2Journal of Materials Science: Materials in Medicine, 2007
- Gamma-ray attenuation studies of PbO–BaO–B2O3 glass systemRadiation Measurements, 2006
- Alkali ion exchange in γ-irradiated glassesJournal of Nuclear Materials, 2004
- Interaction of γ‐rays with Some Alkali‐Alkaline‐Earth Borate Glasses Containing ChromiumJournal of the American Ceramic Society, 1993
- Amorphous and Liquid SemiconductorsPublished by Springer Science and Business Media LLC ,1974
- Radiation-Induced Stress Relaxation in Quartz and Vitreous SilicaJournal of Applied Physics, 1964
- The Long-Wavelength Edge of Photographic Sensitivity and of the Electronic Absorption of SolidsPhysical Review B, 1953