Photoluminescence Properties of Combustion Synthesized Color-tunable SrMgAl10O17:Eu2+, Mn2+ Phosphors for Ultraviolet Light-Emitting Diodes
WEI Gongxiang
WANG Zhao
WANG Dan
JIA Ziwen
LIU Renrui
HUANG Xianguang
LIN Rongchao
SHAN Xiaodan
Abstract：Eu2+, Mn2+ ions co-doped SrMgAl10O17 color-tunable phosphor was synthesized by utilizing combustion method at 600 ℃. The crystal structure and luminescent properties of samples were analyzed by the X-ray diffraction (XRD), scanning electron microscope (SEM) and photoluminescence (PL) spectrum, respectively. The XRD and SEM analysis indicated that SrMgAl10O17:Eu2+, Mn2+ is formed as a pure single-phase. The PL results showed that the phosphor as synthesized can be effective excited by near-UV LED chips with two broad emission bands centered at 460 and 513 nm, respectively. The emission color of the phosphors can be tuned from blue to cyan and finally to green by adjusting the concentration ratios of Eu2+ and Mn2+ ions. The effective energy transfer efficiency and critical distance were calculated, which demonstrated that the energy transfer mechanism is due to the electric dipole-quadruple interaction. Our results indicated that SrMgAl10O17:Eu2+, Mn2+ is a kind of promising color-tunable phosphors for white LEDs with near-UV LED chips.
Keywords：combustion methodcolor-tunableSrMgAl10O17energy transferoxide phosphors
Publication Date：2019-03-02
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 1-7 )