Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 134 (2015) 587–591 Contents lists available at ScienceDirect Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy journal homepage: www.elsevier.com/locate/saa Rare earths in lead-free oxyﬂuoride germanate glasses a,⇑ a b b Wojciech A. Pisarski , Joanna Pisarska , Dominik Dorosz , Jan Dorosz Institute of Chemistry, University of Silesia, Szkolna 9, 40-007 Katowice, Poland Faculty of Electrical Engineering, Bialystok University of Technology, Wiejska 45D, 15-351 Bialystok, Poland highl i ghts graphical a bstrac t Rare earth-doped lead-free germanate glasses modiﬁed by BaF were prepared. Luminescence intensity ratio R/O 3+ (Eu ) is reduced with increasing BaF content. 3+ Hypersensitive transitions of Pr and 3+ Er are blue shifted with increasing BaF content. 3+ Near-infrared luminescence of Er for glass samples with low BaF content is long-lived. article i nfo abstract Article history: Spectroscopic properties of rare earths in lead-free oxyﬂuoride germanate glasses were studied. The 3+ 3+ 3+ Received 28 November 2013 absorption and luminescence spectra of Eu ,Pr and Er ions were examined as a function of BaF con- Received in revised form 7 July 2014 centration and several spectroscopic parameters for rare earths were determined. The ratio of integrated Accepted
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy – Elsevier
Published: Jan 5, 2015
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