Abstract
A series of novel Sn2+ doped boroaluminate glasses were prepared by the traditional melt quenching method in this work. Their glass network structure, luminescent properties, and mechanisms were studied in detail. The main framework of the glass network was dependent on the glass network former (B2O3) and intermediate (Al2O3), and was characterized by the 11B and 27Al NMR spectra. Broadband tunable blue-violet emissions ranging from 320 to 550 nm were realized by regulating the glass network structure through optical basicity. The quantitative relationship between optical basicity and emission/excitation peak positions and intensities, FWHM, and Stokes-Shift of this Sn2+-doped glass were revealed, according to which the luminescent properties of Sn2+ could be modulated and even predicted in the future. This work will enrich our understanding of the luminescent properties of Sn2+ ions and the variations of glass network structure, guiding the design of efficient and tunable luminescent boroaluminate glass.
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