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In this study, series of Eu3+-doped LiCa2SrMgV3O12 (LCSMV) phosphors with broad-band emission and color tunable feature were prepared via solid phase reaction. The X-ray diffraction (XRD) and scanning electron microscopy (SEM) results presented a pure cubic phase product with micron-sized and homogeneous distribution of element. Their spectroscopic properties were investigated systematically by photoluminescence excitation (PLE) and emission (PL) spectra, temperature-dependent PL spectra and luminescence decay curves. The LCSMV phosphors displayed a strong absorption to ultraviolet light and a broad cyan emission. Moreover, in Eu3+- doped LCSMV phosphors, Eu3+ ion characteristic emissions at 589, 610, 651 and 705 nm, attributing to the D-5(0)-> F-7(1),F-7(2), F-7(3) and F-7(4) transitions, were observed. Along with Eu3+ ion concentrations increasing, the emission colors could be readily tuned from cyan to orange and the decay lifetimes of (VO4)(3-) became shorter. Meanwhile, electric dipole-dipole interaction was responsible to energy migration from (VO4)(3-) groups to Eu3+ ions. Further, the quantum efficiency (QE) values were estimated to be 32.5% for LCSMV host and 39.3% for LCSMV: 0.01Eu(3+) sample. Finally, a LED lamp was prepared by integrating the blend of the LCSMV: 0.01Eu(3+) phosphors and commercial blue-emitting BaMgAl10O17:Eu(2+ )phosphors with NUV chip (365 nm) and exhibited warm white light (CCT = 3655 K, Ra = 90), which may be applied in lighting and display field.
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OPTICAL MATERIALS
ISSN: 0925-3467
Year: 2019
Volume: 89
Page: 132-137
2 . 7 7 9
JCR@2019
3 . 8 0 0
JCR@2023
ESI Discipline: MATERIALS SCIENCE;
ESI HC Threshold:236
JCR Journal Grade:2
CAS Journal Grade:3
Cited Count:
WoS CC Cited Count: 16
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 1
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