Abstract
The Ba2P2O7:Tb3+, R (R = Eu2+, Ce3+) phosphors were synthesized by use of a co-precipitation method. Crystal phase, excitation and emission spectra of sample phosphors are analyzed by means of XRD and FL, respectively. The emission spectra of Ba2P2O7:Ce3+, Tb3+ phosphors exhibit four linear peaks attributed to the 5D4 → 7FJ (J = 6–3) transition of Tb3+ while four broad emission bands are observed in the emission spectra of Ba2P2O7:Eu2+, Tb3+ phosphors. The effects of Eu2+ concentration on the luminescent properties of Ba2P2O7:Tb3+, R (R = Eu2+, Ce3+) are studied. Ce3+ affects the luminescent properties of Ba2P2O7:Ce3+, Tb3+ phosphors just as the sensitizer. However, Eu2+ is considered both as the sensitizer and the activator in Ba2P2O7:Eu2+, Tb3+ phosphors. The chromaticity coordinates of Eu2+ and Tb3+ co-doped phosphors gather around the white light field with the CCT approximate to 5000 K, indicating that the luminescent property of Ba2P2O7:Eu2+, Tb3+ phosphors may approach to a desired level needed for white LED application.
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This work was supported by Open Project Foundation of Chongqing Key Laboratory of Micro/Nano Materials Engineering and Technology (Grant No. KFJJ1302).
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Xu, S., Liu, Ss., Zhao, C. et al. Luminescent properties of single-phase Ba2P2O7:Tb3+, R (R = Eu2+, Ce3+) phosphors for white LED. J Mater Sci: Mater Electron 28, 10061–10066 (2017). https://doi.org/10.1007/s10854-017-6766-0
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DOI: https://doi.org/10.1007/s10854-017-6766-0