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Insights into the discrepant luminescence for BaSiO 3 :Eu 2+ phosphors prepared by solid‐state reaction and precipitation reaction methods
Author(s) -
Xu Jiao,
Zhao Yang,
Chen Jingjing,
Mao Zhiyong,
Yang Yanfang,
Wang Dajian
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.3277
Subject(s) - phosphor , luminescence , photoluminescence , precipitation , quenching (fluorescence) , analytical chemistry (journal) , materials science , ion , solid state , chemistry , fluorescence , optoelectronics , optics , physics , organic chemistry , chromatography , meteorology
Two synthesis routes, solid‐state reaction and precipitation reaction, were employed to prepare BaSiO 3 :Eu 2+ phosphors in this study. Discrepancies in the luminescence green emission at 505 nm for the solid‐state reaction method sample and in the yellow emission at 570 nm for the sample prepared by the precipitation reaction method, were observed respectively. A detail investigation about the discrepant luminescence of BaSiO 3 :Eu 2+ phosphors was performed by evaluation of X‐ray diffraction (XRD), photoluminescence (PL)/photoluminescence excitation (PLE), decay time and thermal quenching properties. The results showed that the yellow emission was generated from the BaSiO 3 :Eu 2+ phosphor, while the green emission was ascribed to a small amount of Ba 2 SiO 4 :Eu 2+ compound that was present in the solid‐state reaction sample. This work clarifies the luminescence properties of Eu 2+ ions in BaSiO 3 and Ba 2 SiO 4 hosts.