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Enhanced Luminescence in the SrMgAl 10 O 17 : Eu 2+ Blue Phosphor Prepared by a Hybrid Urea‐Sol Combustion Route
Author(s) -
Wang Le,
Zhang Hong,
Li YangHui,
Liang Pei,
Shen Ye,
Jiao Feng
Publication year - 2015
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12420
Subject(s) - phosphor , materials science , luminescence , photoluminescence , thermal stability , analytical chemistry (journal) , doping , combustion , emission spectrum , urea , ultraviolet , quenching (fluorescence) , optoelectronics , chemical engineering , spectral line , optics , fluorescence , chemistry , organic chemistry , physics , astronomy , engineering
A phase‐pure and high‐brightness blue phosphor, Eu 2+ doped SrMgAl 10 O 17 ( SAM ), was synthesized through a hybrid urea‐sol combustion route. The structure, photoluminescence spectra, and thermal stability of the SAM were investigated in this work. The phosphor had a homogeneous and rod‐like microstructure, showing a broad emission band centered at 465 nm under the 330 nm excitation. The concentration for luminescence quenching of SAM : Eu 2+ occurred at 10 mol%, which doubled that of the phosphor prepared by the conventional combustion method. Compared with the traditional combustion method, the hybrid route led to improvements in luminescence by 52.2%, external quantum efficiency by 16.2%, and thermal stability by 8.8% at 435 K. The blue phosphor prepared by the new method could thus be potentially used with near ultraviolet light‐emitting diodes.