Color-tunable luminescence and energy transfer properties of Eu2+- and Mn2+-activated BaCa2MgSi2O8 phosphor for ultraviolet light-emitting diodes

Zheng Yang, Pin Chun Lin, Chong Feng Guo*, Wei Ren Liu

*Corresponding author for this work

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

A color-tunable BaCa2MgSi2O8:Eu2+, Mn2+ phosphor (BCMSO:Eu, Mn) was synthesized by a solid state reaction. The BCMSO:Eu exhibits blue emission and broad excitation bands corresponding to the allowed f → d electronic transition of Eu2+, which can match well with ultraviolet (UV) light emitting diode (LED) chips. Via efficient energy transfer from Eu2+ to Mn2+, the emission hue can be tuned by tuning the Eu2+/Mn2+ ratio, with the emission hue of BCMSO:Eu, Mn varying from blue to white light, and eventually to red. Meanwhile, high-quality white-emitting light can be generated using an optimized composition of BCMSO:1%Eu2+, 20%Mn2+ with CIE coordinates of (0.3384, 0.2176) and CRI of 82, which is superior to that of blue chip and YAG phosphors. The results indicate that as-synthesized BCMSO:Eu2+, Mn2+ phosphors have potential as single-phased and UV excitable white-emitting phosphors.

Original languageEnglish
Pages (from-to)13184-13191
Number of pages8
JournalRSC Advances
Volume5
Issue number17
DOIs
Publication statusPublished - 2015
Externally publishedYes

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