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Investigation of Ce–Mn Energy Transfer in SrAl 2 O 4 :Ce 3+ ,Mn 2+
Author(s) -
Xu Xuhui,
Wang Yuhua,
Yu Xue,
Li Yanqin,
Gong Yu
Publication year - 2011
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2010.04061.x
Subject(s) - phosphor , phosphorescence , photoluminescence , energy transfer , activator (genetics) , doping , persistent luminescence , materials science , analytical chemistry (journal) , luminescence , photochemistry , chemistry , fluorescence , optoelectronics , optics , physics , thermoluminescence , chemical physics , environmental chemistry , biochemistry , gene
Ce 3+ and Mn 2+ singly doped and codoped SrAl 2 O 4 phosphors were prepared by the solid‐state reaction. Ce 3+ ‐ and Mn 2+ ‐codoped SrAl 2 O 4 phosphor shows tunable blue to green emission. Apart from the emission band of Ce 3+ at 374 nm, which ascribes to the site of Sr 2+ occupied by Ce 3+ , the emission of Mn 2+ located at 515 nm was also observed for the energy transferred from Ce 3+ to Mn 2+ in SrAl 2 O 4 :Ce 3+ ,Mn 2+ . By appropriately tuning the activator content, the developed phosphors can generate lights from blue to green region. In addition, green phosphorescence from Mn 2+ was observed in the codoped system, which was due to the persistent energy transfer between Ce 3+ and Mn 2+ . The finding suggests a promising approach to controlling the color of the photoluminescence and phosphorescence of persistent phosphors.