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Photoluminescence properties of Ba3In2WO9: Eu3+: a novel red-emitting phosphor for WLEDs

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Abstract

A series of new composite perovskite Ba3In2-xWO9: xEu3+ red phosphors were synthesized by high-temperature solid-state reaction. The powder X-ray diffraction patterns, scanning electron microscope images, absorption spectrum, photoluminescence and thermal stability of Ba3In2-xWO9: xEu3+ were characterized and the CIE chromaticity coordinates, color purity and correlated color temperature value of Ba3In2−xWO9: xEu3+ were calculated. The results show that the absorption peaks of Ba3In2-xWO9: xEu3+ phosphors are at 350–500 nm, and the emission peaks are at 500–750 nm. The optimal doping is at x = 0.30. The energy quenching mechanism is the interaction of dipole–dipole. The phosphors have good thermal stability and the percentage luminescence intensity is 63.29% at 423 K of Ba3In1.7WO9: 0.3Eu3+, while the thermal quenching activation energy ΔE = 0.243 eV. The color coordinate of Ba3In1.7WO9: 0.3Eu3+ is calculated at (0.6293, 0.3651), and the color purity is 97.92%, which is excellent. All the results indicated that Ba3In2-xWO9: xEu3+ near-ultraviolet (394 nm) or blue-excited (464 nm) red phosphors have potential applications in white light-emitting diodes.

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The data used to support the findings of this study are available from the corresponding author upon request.

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Acknowledgements

This work was supported by the Science and Technology Foundation of Guizhou Province (No. ZK [2021] yiban 328).

Funding

The funded was provided by Science and Technology Foundation of Guizhou Province (No. ZK [2021] yiban 328).

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CD, RC: financial support. PY: investigation, data curation, data processing, writing—original draft, manuscript handling. RC, XG, XZ: suggestion, Guidance. All the authors read and approved the final manuscript.

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Correspondence to Chaoyong Deng.

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Yu, P., Cui, R., Gong, X. et al. Photoluminescence properties of Ba3In2WO9: Eu3+: a novel red-emitting phosphor for WLEDs. J Mater Sci: Mater Electron 33, 14882–14893 (2022). https://doi.org/10.1007/s10854-022-08406-3

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