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The Thermal Stability and Photoluminescence Degradation of Mn 2+ in Fluorescent Lamp used BaMgAl 10 O 17 : Eu 2+ , Mn 2+ Phosphor
Author(s) -
Zhang Jiachi,
Zhou Meijiao,
Liu Bitao,
Wang Yuhua
Publication year - 2012
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/j.1744-7402.2012.02809.x
Subject(s) - photoluminescence , phosphor , manganese , degradation (telecommunications) , impurity , thermal stability , fluorescence , materials science , energy transfer , valence (chemistry) , analytical chemistry (journal) , nuclear chemistry , chemistry , optoelectronics , physics , metallurgy , telecommunications , organic chemistry , chromatography , computer science , quantum mechanics , molecular physics
The thermal stability and photoluminescence degradation of Mn 2+ in fluorescent lamps used BaMgAl 10 O 17 : Eu 2+ , Mn 2+ phosphor are investigated. The detection of impurity containing manganese with high valence demonstrates the oxidation of Mn 2+ during baking process at 700°C and it partly leads to emission degradation of Mn 2+ . The emission of Mn 2+ mainly originates from the energy transfer of Eu 2+ → Mn 2+ . The oxidation of Eu 2+ decrease the amount of Eu 2+ centers and thus finally causes the degradation of Mn 2+ . Some traps are revealed to be induced during baking process and it further weakens energy transfer efficiency of Eu 2+ → Mn 2+ and decreases the emission of Mn 2+ .