Abstract
Abstract In this work, a novel luminescence material, SSZ-39 zeolite doped by Eu2+ ions with tunable emission was obtained by the ion-exchange method followed by reducing atmosphere annealed process. And series of samples synthesized based on various reaction time of the ion-exchange process were investigated. SSZ-39 zeolite is a silicoaluminate material with large cavities interconnected through small pore openings, and exhibits excellent catalytic performance and good (hydro)thermal stability. It has been successfully synthesized and its structure was characterized by XRD, SEM, TG-DTA, FT-IR, TEM, EDX and XPS techniques. The cages of SSZ-39 zeolite provide an isolated and steady environment for the luminescent centers. The photoluminescence (PL) properties of the Eu2+-SSZ-39 zeolite samples were investigated in detail by emission and excitation spectra, decay curves, and temperature dependence spectra. The brightest sample under 338 nm UV light excitation could generate a broad emission band peaks at about 459 nm. In addition, the strong tunable blue emission and the good thermal stability properties indicate the potential application of Eu2+-SSZ-39 zeolite in the LED phosphor.
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