Tarafder, Anal and Molla, Atiar Rahaman and Karmakar, Basudeb (2013) Enhanced photoluminescence and structure of Dy3+-doped SrBi2Ta2O9-containing transparent glass-ceramics. Optical Materials , 35 (8). pp. 1549-1556. ISSN 0925-3467

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Trivalent dysprosium (Dy3+)-doped precursor glass in the K2O-SiO2-SrO-Bi2O3-Ta2O5 (KSSBT) system have been prepared by melt-quench technique and strontium bismuth tantalate, SrBi2Ta2O9 (SBT) glass-ceramics has been synthesized by a controlled crystallization process of the precursor glass. With progression of heat-treatment it is observed that Dy3+:glass exhibit a blue emission at 486 nm (F-4(9/2) -> H-6(15/2)) and also a bright fluorescent yellow emission at 576 nm (F-4(9/2) -> H-6(13/2)) have been observed with lambda(ex) = 455 nm (H-6(15/2) -> I-4(15/2)). These spectra reveal that the Dy3+ ions are gradually entering into the SBT nanocrystals of the glass-ceramics. The photoluminescence characteristics originating from Dy3+-doping in nanocrystalline SBT reveals the dependence of the luminescent intensity on heat-treatment time. Their structural properties have also been evaluated by FTIR spectroscopic and microstructural studies. Such luminescent glass-ceramics are expected to find potential applications such as solid-state yellow lasers and optical display systems. (c) 2013 Elsevier B.V. All right's reserved.

Item Type: Article
Subjects: Glass
Divisions: Glass
Depositing User: Bidhan Chaudhuri
Date Deposited: 27 Sep 2013 09:27
Last Modified: 12 Mar 2016 16:25
URI: http://cgcri.csircentral.net/id/eprint/2186

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