Blue and Red Luminescence from Europium-Doped Barium TetraBorate Crystals

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The structural and spectroscopic properties of Barium tetraborate crystals activated with Eu3+ ion have been studied. Differential thermal analysis, X-ray diffraction (XRD), and SEM techniques have been used for structural characterization. The XRD pattern revealed the formation of α-BaB4O7 crystals. It was observed that under the proposed charge compensation model, the structural properties of the α-BaB4O7 crystal significantly alter the luminescence characteristics of Eu3+ and Eu2+ ions. The enhancement of the emission explained and the photo-physics involved is correlated with the unique structural properties of the crystallites formed.

Document Type: Research Article


Affiliations: Laser and Spectroscopy Laboratory, Department of Physics, Banaras Hindu University, Varanasi 221005, India

Publication date: March 1, 2010

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