Luminescent properties of Sr5(PO4)3 Cl

Eu2+, Mn2+ as a potential phosphor for UV-LED-based white LEDs

C. Guo*, L. Luan, X. Ding, F. Zhang, F. G. Shi, F. Gao, L. Liang

*Corresponding author for this work

Research output: Contribution to journalArticle

80 Citations (Scopus)

Abstract

Eu2+ and Mn2+ co-activated Sr5(PO 4)3Cl phosphors with blue and orange color double emission bands, under a broad-band excitation wavelength range of 340-400 nm, were synthesized by the solid-state reaction. It was found that the processing parameters, including the fluxes, annealing time and activators concentrations, affect the emission intensity and other luminescent properties. Energy transfer between Eu2+ and Mn2+ was discovered and the transfer efficiency was also estimated based on relative intensities of Eu2+ and Mn2+ emission. Thus the relative strength of blue and orange emission intensities could be tuned by varying the relative concentration of Eu2+ and Mn2+. Since the photoluminescence excitation spectra of the newly developed Sr5(PO4) 3Cl:Eu2+, Mn2+ phosphors exhibit a strong absorption in the range of 340-400 nm, they are promising for producing UV-LED-based white LEDs.

Original languageEnglish
Pages (from-to)779-785
Number of pages7
JournalApplied Physics B: Lasers and Optics
Volume95
Issue number4
DOIs
Publication statusPublished - Jun 2009

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