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Luminescence properties and energy transfer of Eu 3+ /Tb 3+ co‐doped glass ceramics containing Na 3 Gd ( PO 4 ) 2
Author(s) -
Chen Xi,
Zhang Hongbo,
Jia Wentao,
Zou Xiangyu,
Su Chunhui
Publication year - 2021
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.202000443
Subject(s) - analytical chemistry (journal) , luminescence , doping , chemistry , phosphor , scanning electron microscope , transmittance , crystal (programming language) , fluorescence , ceramic , crystallization , absorption (acoustics) , grain size , photoluminescence , nuclear chemistry , materials science , optics , optoelectronics , metallurgy , chromatography , composite material , physics , organic chemistry , computer science , programming language
Tb 3+ ‐doped and Eu 3+ /Tb 3+ co‐doped transparent glass ceramics containing Na 3 Gd(PO 4 ) 2 crystal phase were prepared by melt crystallization. The types of crystals, grain size, and optical transmittance of the samples were investigated by X‐ray diffraction (XRD), scanning electron microscope (SEM), and UV visible absorption spectrometer. The effect of different heat treatment time on grain size, crystal morphology, and light transmittance was also studied. The luminescence performance of transparent glass ceramics was systematically studied by the excitation spectrum, emission spectrum, and the fluorescence lifetime. The optimal doping concentration of Tb 3+ doped and Eu 3+ /Tb 3+ co‐doped were determined. When the mole percent concentration of Tb 4 O 7 was 0.4%, the strongest green light was obtained at 546 nm ( 5 D 4 → 7 F 5 ). Meanwhile, the energy transfer process between Eu 3+ and Tb 3+ was discussed. Under the excitation of 374 nm, white light can be obtained by adjusting the concentration ratio of Eu 3+ and Tb 3+ .