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Study of the effect of water on thermal and operating degradation of BaMgAl 10 O 17 : Eu 2+ (BAM) blue phosphor
Author(s) -
Onimaru T.,
Fukuta S.,
Misawa T.,
Sakita K.,
Betsui K.
Publication year - 2005
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/1.1867099
Subject(s) - citation , phosphor , computer science , physics , philosophy , library science , nuclear physics
— From the adsorption and desorption characteristics of water, we showed that water can intercalate into BaMgAl 10 O 17 : Eu 2+ blue phosphor. ESR, XANES, and XPS analyses confirmed that oxidation by water causes thermal degradation of BAM. We also demonstrated that intercalated water accelerates luminance degradation under VUV irradiation and showed oxidation of Eu 2+ during panel operation by means of μ‐XPS. We concluded that the cause of thermal and operating degradation of BAM is the oxidation of Eu 2+ due to water.