Preparation and photoluminescence properties of Mn{sup 2+}-activated M{sub 2}Si{sub 5}N{sub 8} (M=Ca, Sr, Ba) phosphors

Journal Article · Tue Apr 15 04:00:00 EDT 2008 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2007.12.031· OSTI ID:21128243

Duan, C J; Otten, W M; Delsing, A C.A. ^[1]

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1. Materials and Devices for Sustainable Energy Technologies, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven (Netherlands)

Mn{sup 2+}-doped M{sub 2}Si{sub 5}N{sub 8} (M=Ca, Sr, Ba) phosphors have been prepared by a solid-state reaction method at high temperature and their photoluminescence properties were investigated. The Mn{sup 2+}-activated M{sub 2}Si{sub 5}N{sub 8} phosphors exhibit narrow emission bands in the wavelength range of 500-700 nm with peak center at about 599, 606 and 567 nm for M=Ca, Sr, Ba, respectively, due to the {sup 4}T{sub 1}({sup 4}G){yields}{sup 6}A{sub 1}({sup 6}S) transition of Mn{sup 2+}. The long-wavelength emission of Mn{sup 2+} ion in the host of M{sub 2}Si{sub 5}N{sub 8} is attributed to the effect of a strong crystal-field of Mn{sup 2+} in the nitrogen coordination environment. Also it is observed that there exists energy transfer between M{sub 2}Si{sub 5}N{sub 8} host lattice and activator (Mn{sup 2+}). The potential applications of these phosphors have been pointed out. - Graphical abstract: The luminescence properties of Mn{sup 2+} in M{sub 2}Si{sub 5}N{sub 8} (M=Ca, Sr, Ba) have been investigated. All M{sub 2}Si{sub 5}N{sub 8}:Mn{sup 2+} phosphors show narrow symmetric bands in the wavelength range of 500-700 nm with peak center at about 599, 606 and 567 nm for M=Ca, Sr, Ba, respectively. The observed band emission is ascribed to the {sup 4}T{sub 1}({sup 4}G){yields}{sup 6}A{sub 1}({sup 6}S) transition of Mn{sup 2+} in M{sub 2}Si{sub 5}N{sub 8} host lattice.

• OSTI ID: 21128243
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 4 Vol. 181; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM COMPOUNDS
CALCIUM COMPOUNDS
CRYSTAL FIELD
DOPED MATERIALS
MANGANESE IONS
NITRIDES
PHOSPHORS
PHOTOLUMINESCENCE
SILICIDES
STRONTIUM COMPOUNDS