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Home  >  Volume 38

56. Prominent Luminescence Analysis of Europium Doped Sodium Calcium Borate Glasses for Optical Applications by 1,4I. Bulus, M. Isah, ,4A. ¬Ango and U.Abdullahi Volume 38, (November, 2016), pp 389 – 392
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Abstract

Achieving highly efficient bright red emission from borate based glasses via appropriate controlled doping of rare earth ions is a big dream in lasing and lighting industries. Hence, a series of new high optical quality Eu+3-doped sodium calcium borate glasses with nominal composition of 20Na2O-20CaO-(60-x)B2O3-xEu2O (where x = 0.05, 0.1, 0.5, 1.0, 1.5 mol%) were prepared using convectional melt quenching technique and characterized by X-Ray Diffraction (XRD) and Photoluminescence measurements. XRD pattern confirmed the amorphous nature of the prepared glass samples while the Photoluminescence spectral analysis contain five excitation peaks at 358, 377, 394, 411 and 462 nm corresponding to the 7F0→5D4, 7F0→5L7, 7F0→5L6, 7F0→5D3 and 7F0→5D2 transitions respectively. The emission spectra revealed four emission peaks at 587 nm (5D0→7F1), 612 nm (5D0→7F2), 650 nm (5D0→7F2) and 698 nm (5D0→7F4) under the excitation wavelength of 394 nm. Among all the studied glass samples, 1.50Euglass sample exhibits aprominent red emission at 612 nm which specifies its prospective suitability for red lasers and LEDs applications.

Keywords: Borate glasses, Eu+3 ions concentration, XRD Diffraction, Photoluminescence analysis

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