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High Thermal Stability and Photoluminescence of Si–N‐Codoped BaMgAl10O17:Eu2+ Phosphors

The luminance degradation of BaMgAl10O17:Eu2+(BAM) caused by baking at 600°C was studied. The dissolution of Si[ndash]N into BAM lattice lead to only a reduction in the lattice parameters. Under UV excitation, the Si[ndash]N codoping enhanced the luminescent intensity by a factor of 110% for the as-received phosphors and by a factor of 122% for phosphors baked at 600°C for 1 h. This could be attributed to the stable local structure surrounding the Eu2+ ions and the lower electronegativity of nitrogen. The proposed method is expected to be potentially applicable to other aluminate phosphors with higher stability and photoluminescence.

Authors:   Wang, YiFei; Xu, Xin; Yin, LiangJun; Hao, LuYuan
Journal:   Journal of the American Ceramic Society
Volume:   93
edition:   6
Year:   2010
Pages:   1534
DOI:   10.1111/j.1551-2916.2009.03557.x
Publication date:   01-Jun-2010
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