NDLI: Crystal structure and luminescent properties of a novel high efficiency blue-orange emitting $NaCa_{2}LuSi_{2}O_{7}F_{2}:Ce^{3+},Mn^{2+}$ phosphor for ultraviolet light-emitting diodes

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Zhao, Qi Jiao, Mengmeng Shao, Baiqi Jia, Yongchao You, Hongpeng Guo, Ning Lü, Wei Lv, Wenzhen
Description	Author Affiliation: Lv W ( State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China. hpyou@ciac.jl.cn.)
Abstract	A series of $NaCa_{2}LuSi_{2}O_{7}F_{2}:xCe^{3+},yMn^{2+}$ phosphors are firstly prepared by a high-temperature solid-state reaction technique. The Rietveld refinement analysis confirmed that the obtained phosphors have a pure crystalline phase with cuspidine-group structure. $NaCa_{2}LuSi_{2}O_{7}F_{2}:xCe^{3+},yMn^{2+}$ phosphors can be efficiently excited by UV light and have two emission bands at about 410 and 600 nm. The luminescent properties of the singly-doped samples reveal that the $Ce^{3+}$ ions occupy two different $Lu^{3+}$ sites in the host lattice. We observed an efficient energy transfer from the $Ce^{3+}$ to $Mn^{2+}$ ions. The investigation revealed that the mechanism of the energy transfer was a resonant type via a nonradiative dipole–quadrupole interaction. The hues can be adjusted and white light can be obtained by tuning the concentration of $Mn^{2+}$ ions in the codoped phosphors through the energy transfer from the $Ce^{3+}$ to $Mn^{2+}$ ions, hinting a promising application of $NaCa_{2}LuSi_{2}O_{7}F_{2}:xCe^{3+},yMn^{2+}$ as a single-component phosphor that can produce white light from UV-based LEDs.
ISSN	14779226
Issue Number	36
Journal	Dalton Trans.
Volume Number	42
e-ISSN	13645447
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2013-09-28
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Chemistry
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

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