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Issue 10, 2014
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The energy transfer and effect of doped Mg2+ in Ca3Sc2Si3O12:Ce3+, Pr3+ phosphor for white LEDs

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Abstract

The energy transfer and luminescence properties in the Ce3+ and Pr3+ co-activated Ca3Sc2Si3O12 (CSS) silicate garnet are studied in our work. The addition of Pr3+ exhibits a red emission around 610 nm in the green phosphor CSS:Ce3+, but the amount of Pr3+ incorporated into the phosphor is very limited due to the charge mismatch when Pr3+ substitutes for Ca2+ in CSS. In order to promote Pr3+ incorporation into CSS lattices to enhance the red emission component, the addition of Mg2+ incorporated into Sc3+ site is performed to compensate the residual positive charge caused by the substitution of Pr3+ for Ca2+ in CSS. Finally, a white LED with color rendering index of 80 and correlated color temperature of 8715 K is obtained by combining the single CSS:0.05Ce3+, 0.01Pr3+, 0.3Mg2+ phosphor with a blue-emitting InGaN LED chip.

Graphical abstract: The energy transfer and effect of doped Mg2+ in Ca3Sc2Si3O12:Ce3+, Pr3+ phosphor for white LEDs

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Publication details

The article was received on 15 Oct 2013, accepted on 21 Nov 2013 and first published on 26 Nov 2013


Article type: Paper
DOI: 10.1039/C3DT52902A
Citation: Dalton Trans., 2014,43, 4146-4150
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    The energy transfer and effect of doped Mg2+ in Ca3Sc2Si3O12:Ce3+, Pr3+ phosphor for white LEDs

    J. Qiao, J. Zhang, X. Zhang, Z. Hao, Y. Liu and Y. Luo, Dalton Trans., 2014, 43, 4146
    DOI: 10.1039/C3DT52902A

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