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Tunable luminescence and energy transfer in Ca 3 SiO 4 Cl 2: Ce 3+ ,Li + ,Mn 2+ ,Eu 2+ phosphors
Author(s) -
Li Xiangqi,
Xie Xiuzhen,
Wei Haiting,
Zhong Minzhen
Publication year - 2017
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.3286
Subject(s) - phosphor , luminescence , analytical chemistry (journal) , ion , doping , excitation , energy transfer , chemistry , materials science , optoelectronics , physics , molecular physics , organic chemistry , chromatography , quantum mechanics
A series of color‐tunable Ca 3–2x‐y‐z SiO 4 Cl 2 (CSC):xCe 3+ ,xLi + ,yMn 2+ ,zEu 2+ phosphors with low temperature phase structure was synthesized via the sol–gel method. An energy transfer process from Ce 3+ to Mn 2+ in CSC:0.01Ce 3+ ,0.01Li + ,yMn 2+ (y = 0.03–0.09) and the mechanism was verified to be an electric dipole–dipole interaction. The Ce 3+ and Mn 2+ emission intensities were greatly enhanced by co‐doping Eu 2+ ions into CSC:0.01Ce 3+ ,0.01Li + ,0.07Mn 2+ phosphors due to competitive energy transfers from Eu 2+ /Ce 3+ to Mn 2+ , and Ce 3+ to Eu 2+ . Under 332 nm excitation, CSC:0.01Ce 3+ ,0.01Li+,0.07Mn 2+ ,zEu 2+ (z = 0.0005–0.002) exhibited tunable emission colors from green to white with coexisting orange, green and violet‐blue emissions. These phosphors could have potential application in white light‐emitting diodes.