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Journal of Nanomaterials
Volume 2013, Article ID 872074, 7 pages
http://dx.doi.org/10.1155/2013/872074
Research Article

Color Centers Formation in Lithium Fluoride Nanocubes Doped with Different Elements

1Center of Nanotechnology, King Abdulaziz University, Jeddah 21589, Saudi Arabia
2Center of Nanotechnology, Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia

Received 27 September 2013; Accepted 28 November 2013

Academic Editor: Hongchen Chen Gu

Copyright © 2013 Numan Salah et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Nanocrystalline cubes of pure and doped LiF material were fabricated. They were doped with Cu, Ag, Dy, Tb, and Eu and studied for their PL properties. Shape of the obtained nanocubes was found to be modified by introducing dopants into the host of LiF. The crystallinity was also decreased by increasing the concentration of these dopants (i.e., Eu and Tb). These impurities could induce exothermic peaks at around 250°C in the measured DSC curves. Moreover, incorporating such impurities into the host of LiF was found to enhance intensity of the broad band at 370–550 nm that was observed in the pure one. Extra sharp emissions were also observed in Eu and Tb doped samples. These results showed that the active color centers created in pure LiF nanocubes can be enriched/enhanced by these impurities, mainly Eu and Tb. This implies that these nanocubes might be useful in the development of optical devices and advanced color center laser.