Abstract
Ba2LaV3O11:Eu3+ phosphors were firstly synthesized by the traditional solid-state reaction method at 1100 °C. Their luminescence properties were investigated by photoluminescence excitation and emission spectra. The excitation spectrum shows a broad band centered at about 275 nm in the region from 200 to 370 nm, which is attributed to an overlap of the charge transfer transitions of O2− → V5+ and O2− → Eu3+. The phosphors exhibit the red emissions of Eu3+ and the emission intensity ratio of 5D0 → 7F2 to 5D0 → 7F1 is dependent on the Eu3+ concentration due to an environment change about Eu3+ ions. Concentration quenching occurs at 30 mol% in the phosphors and exchange interaction is its main mechanism. Ba2LaV3O11:Eu3+ displays tunable CIE color coordinates from yellow orange to red depended on Eu3+ content, which may have a potential application for illuminating and display devices.
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This work is supported by the Natural Science Foundation of Guangdong Province of China (Grant Nos. S2013010013567 and 7008121).
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Niu, P., Liu, X., Wang, Y. et al. Photoluminescence properties of a novel red-emitting phosphor Ba2LaV3O11:Eu3+ . J Mater Sci: Mater Electron 29, 124–129 (2018). https://doi.org/10.1007/s10854-017-7895-1
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DOI: https://doi.org/10.1007/s10854-017-7895-1