Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7906668 | Optical Materials | 2018 | 4 Pages |
Abstract
Sr2Mg3P4O15:R (Râ¯=â¯Bi3+, Mn2+, and Bi3+/Mn2+) phosphors are synthesized by a solid-state reaction method in air. Sr2Mg3P4O15:Bi3+ phosphor with excitation 380â¯nm shows blue light and its emission band peaking at â¼445â¯nm is observed. Under excitation at 355 and 416â¯nm, Sr2Mg3P4O15:Mn2+ phosphor shows red emission with a single broad emission band peaking at â¼630â¯nm in the range of 500-800â¯nm owing to the 4T1(G) â 6A1 transition of the Mn2+ ion. The optimal Mn2+ ion content in Sr2Mg3P4O15:Mn2+ phosphor is â¼0.05 and the lifetime of Sr2Mg2.95P4O15:0.05Mn2+ phosphor is â¼6.17â¯ms. After Bi3+ ion is co-doped, emission intensity of Sr2Mg3P4O15:Mn2+ phosphor can be enhanced obviously due to energy transfer (ET) from Bi3+ to Mn2+, which is confirmed by the luminescence properties and lifetimes of Sr2Mg3-xP4O15:Bi3+, Mn2+ phosphor. Luminous mechanism and ET process of Sr2Mg3-xP4O15:Bi3+, Mn2+ phosphor are explained by the simple energy level diagram of Bi3+ and Mn2+ ions.
Related Topics
Physical Sciences and Engineering
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Authors
Renping Cao, Wudi Wang, Jinlong Zhang, Yujiao Ye, Ting Chen, Siling Guo, Fen Xiao, Zhiyang Luo,