Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5402396 | Journal of Luminescence | 2010 | 7 Pages |
Abstract
White-light-emitting T-phase Eu2+/Mn2+-codoped (Ba, Ca)2SiO4 phosphors are achieved in terms of the energy transfer between Eu2+ and Mn2+ ions. All spectra consist of the relatively broad green and the red emission bands, which thus result in a warm-white color with a color temperature of â¼4000Â K. With increasing Eu2+ ions at fixed Mn2+ concentrations, a strong correlation between the luminescence and the electron paramagnetic resonance spectra is observed. This demonstrates that Eu2+ doping causes a perturbation of Mn2+ sites and the violation of their selection rules that enhances Mn2+-related emissions.
Related Topics
Physical Sciences and Engineering
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Physical and Theoretical Chemistry
Authors
Nam-Sik Choi, Kwang-Won Park, Boo-Won Park, Xin-Min Zhang, Jong-Su Kim, Patrick Kung, Seongsin Margaret Kim,