The effect of titanium oxide on the optical properties of lithium potassium borate glass
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- 作者：Yasser Saleh Mustafa Alajerami ; Suhairul Hashim ; Wan Muhamad Saridan Wan Hassan ; Ahmad Termizi Ramli
- 关键词：Optical properties ; Photoluminescence ; Lithium potassium borate ; Titanium oxide
- 刊名：Journal of Molecular Structure
- 出版年：2012
- 出版时间：24 October, 2012
- 年：2012
- 卷：1026
- 期：Complete
- 页码：159-167
- 全文大小：1041 K
文摘
Borate glass is one of the popular hosts that have been widely used in technological applications. In this work, Li2O-K2O-B2O3 (LKB) glasses co-doped with different concentration of titanium oxide (TiO2) have been prepared by chemical quenching technique. The X-ray Diffraction (XRD) results showed the amorphous nature of the sample. Fourier transform infrared (FTIR) spectra, energy band gap, density, ion concentration, molar volume, Polaron radius and inter-nuclear distance and other significant parameters have been analyzed in the light of the different oxidation states of the dopant ions in the glass matrix. Based on the up-conversion phenomenon, the addition of different concentration of TiO2 ions illustrates its effect on the Photoluminescence (PL) emission of LKB. Due to the change in the activator concentration, a broad blue emission with intensity of around 300 (au) has been observed with 0.3 mol % concentration. Enhancement of about three times has been shown with the increment of 0.7 mol % in concentration. The current results are attributed to electron-phonon vibration obtained after the charge transferred from the valence state (O2/2p6) to the conductive state (Ti/3d). The new host showed a non-linear optical relation, that promises to be useful for future optical and electro-optical devices, related to telecommunications, optical storage, and all-optical computing disciplines, particularly for the sample doped with 0.7 mol % .