Luminescence and structure of Eu2+-doped Ba2CaMg2Si6O17
Source abstract
Abstract
Abstract Eu 2+ -activated Ba 2 CaMg 2 Si 6 O 17 phosphors were synthesized by conventional solid-state reaction. The phase formation was confirmed by X-ray powder diffraction measurement. The photoluminescence excitation and emission spectra were investigated. The phosphor presents blue-emitting luminescence. The crystallographic sites of Eu 2+ ions in Ba 2 CaMg 2 Si 6 O 17 host were discussed on the base of luminescence properties and the crystal structure. The lightly Eu 2+ -doped sample shows one luminescence center for the Eu 2+ ions on Ba 2+ sites, while there are two luminescence centers for the Eu 2+ ions on both the Ba and Ca sites in heavily Eu 2+ -doped sample. The dependence of luminescence intensity on temperatures and the activation energy (Δ E ) for the thermal quenching were reported. The phosphor shows an excellent thermal stability on temperature quenching because of the special layered structure of Ba 2+ ions in the interlayer between SiO 4 layers.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Radiation Detection and Scintillator Technologies · Luminescence and Fluorescent Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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