Open AccessThe degradation mechanisms of lamp used BaMgAl10O17: Eu2+,Mn2+ phosphor
Author(s) -
Meijiao Zhou,
Jiachi Zhang,
Yuhua Wang
Publication year - 2012
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.61.074103
Subject(s) - phosphor , materials science , luminescence , degradation (telecommunications) , ultraviolet , radiation , ion , thermal , metastability , absorption (acoustics) , irradiation , optoelectronics , photochemistry , optics , chemistry , composite material , physics , telecommunications , computer science , organic chemistry , meteorology , nuclear physics
The thermal and the ultraviolet radiation degradation mechanisms of lamp used BaMgAl10O17:Eu2+, Mn2+ phosphor are investigated in a comparative way. Thermal and the ultraviolet radiation treatments can both seriously damage the luminous efficiency of BaMgAl10O17:Eu2+,Mn2+. It is revealed that the thermal degradation is involved in the oxidation and migration of Eu2+ ions. The ultraviolet radiation makes the Eu2+ in metastable state, which weakens the direct absorption of Eu2+ and thus reduces the relative luminescence intensity of BaMgAl10O17:Eu2+,Mn2+.