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Synthesis and photoluminescence properties of a novel red phosphor SrLaGaO 4 :Mn 4+
Author(s) -
Jiang Chunyan,
Zhang Xin,
Wang Jia,
Zhao Quanzhong,
Wong KaLeung,
Peng Mingying
Publication year - 2019
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.15981
Subject(s) - phosphor , photoluminescence , analytical chemistry (journal) , dopant , luminescence , photoluminescence excitation , doping , gallate , materials science , quenching (fluorescence) , lanthanum , strontium , excitation , emission spectrum , chemistry , spectral line , inorganic chemistry , fluorescence , nuclear chemistry , optics , optoelectronics , physics , organic chemistry , chromatography , quantum mechanics , astronomy
Abstract A novel Mn 4+ ‐doped strontium lanthanum gallate red phosphor SrLaGaO 4 :Mn 4+ has been successfully prepared via the conventional solid‐state reaction method. Phase purity, photoluminescence excitation/emission spectra, concentration quenching, decay curves, and temperature‐dependent photoluminescence have been investigated systematically. SrLaGaO 4 :Mn 4+ phosphor exhibits broad excitation band from 250 to 600 nm and emits intense red light centered at 716 nm arising from spin‐forbidden transition, 2 E → 4 A 2 of Mn 4+ . The optimal dopant concentration of Mn 4+ is determined to be 0.2 mol%. Dipole‐dipole interaction is supposed to be the mechanism of concentration quenching. The crystal‐field strength Dq, the Racah parameters B and C, and the nephelauxetic ratio β 1 of SrLaGaO 4 :Mn 4+ have been calculated according to its luminescent spectra. Our systematic investigation on this new phosphor can provide a reference for the development of red‐emitting phosphor.