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Synthesis and Photoluminescence of a Novel Green‐Emitting La 5 Si 3 O 12 N : Eu 2+ Phosphor
Author(s) -
Lu FaChun,
Bai LiJing
Publication year - 2014
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.13082
Subject(s) - photoluminescence , phosphor , quenching (fluorescence) , luminescence , analytical chemistry (journal) , materials science , spectral line , blueshift , chemistry , fluorescence , optoelectronics , physics , optics , chromatography , astronomy
A novel green‐emitting La 5 Si 3 O 12 N : Eu 2+ phosphor has been synthesized with the solid‐state reaction method under the high temperature, high pressure, and reducing atmosphere. This phosphor shows stable Eu 2+ photoluminescence spectra. No Eu 3+ line spectra have been found. For the emission band, an abnormal blue shift has been found. Concentration quenching occurs at Eu 2+ concentration of 4 mol%. The photoluminescence property at high temperature was investigated. The physical mechanisms for blue shift, concentration quenching and thermal quenching were investigated and discussed. The proposed synthesis process could be a suitable method to acquire the stable Eu 2+ photoluminescence in the trivalent metal cation compounds.