White light generation under violet-blue excitation from tunable green-to-red emitting Ca2MgSi2O7:Eu,Mn through energy transfer

Chun Kuei Chang, Teng-Ming Chen*

*Corresponding author for this work

Research output: Contribution to journalArticle

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Abstract

Yellowish green-to-orange red emission can be generated by energy transfer from Eu2+ to Mn2+ in the Ca2MgSi 2O7 host matrix. Eu2+-doped Ca 2MgSi2O7 shows a broad green emission band centering at 528 nm and Mn2+-doped Ca2MgSi 2O7 exhibits a red emission at around 602 nm. The authors have demonstrated that the mechanism of energy transfer from Eu2+ to Mn2+ in Ca2MgSi2O7:Eu,Mn phosphor is a resonant type via a dipole-quadrupole mechanism. They have also shown that the white light with varied hue, depending on contents of Mn2+, is generated by combination of predesigned emission wavelength-tunable Ca 2MgSi2O7:Eu,Mn phosphors and violet-blue light source.

Original languageEnglish
Article number161901
JournalApplied Physics Letters
Volume90
Issue number16
DOIs
StatePublished - 30 Apr 2007

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