Improving the stability of alkaline earth sulfide-based phosphors

Chongfeng Guo; Benli Chu; Qiang Su

doi:10.1016/j.apsusc.2003.10.008

Improving the stability of alkaline earth sulfide-based phosphors

Chongfeng Guo, Benli Chu, Qiang Su^*

^*Corresponding author for this work

Department of Physics and Astronomy

Research output: Contribution to journal › Article

47 Citations (Scopus)

Abstract

Alkaline earth sulfide-based red-emitting phosphor Ca _0.8Sr _0.2S:Eu ²⁺, Tm ³⁺ were coated directly by ZnO and Al ₂O ₃ particles to prevent PL intensities degradation under the effects from moist air. The PL intensities degradation of phosphors modified with oxides particles was reduced to different extents, in comparison with that of uncoated phosphor. SEM (scanning electron microscopy), powder XRD (X-ray diffraction) and EDX (energy dispersive X-ray) methods were used to characterize the coating.

Original language	English
Pages (from-to)	198-203
Number of pages	6
Journal	Applied Surface Science
Volume	225
Issue number	1-4
DOIs	https://doi.org/10.1016/j.apsusc.2003.10.008
Publication status	Published - 30 Mar 2004

Keywords

Coating
Phosphor
Stability and surface
Sulfide

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abstract = "Alkaline earth sulfide-based red-emitting phosphor Ca 0.8Sr 0.2S:Eu 2+, Tm 3+ were coated directly by ZnO and Al 2O 3 particles to prevent PL intensities degradation under the effects from moist air. The PL intensities degradation of phosphors modified with oxides particles was reduced to different extents, in comparison with that of uncoated phosphor. SEM (scanning electron microscopy), powder XRD (X-ray diffraction) and EDX (energy dispersive X-ray) methods were used to characterize the coating.",

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AU - Chu, Benli

AU - Su, Qiang

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N2 - Alkaline earth sulfide-based red-emitting phosphor Ca 0.8Sr 0.2S:Eu 2+, Tm 3+ were coated directly by ZnO and Al 2O 3 particles to prevent PL intensities degradation under the effects from moist air. The PL intensities degradation of phosphors modified with oxides particles was reduced to different extents, in comparison with that of uncoated phosphor. SEM (scanning electron microscopy), powder XRD (X-ray diffraction) and EDX (energy dispersive X-ray) methods were used to characterize the coating.

AB - Alkaline earth sulfide-based red-emitting phosphor Ca 0.8Sr 0.2S:Eu 2+, Tm 3+ were coated directly by ZnO and Al 2O 3 particles to prevent PL intensities degradation under the effects from moist air. The PL intensities degradation of phosphors modified with oxides particles was reduced to different extents, in comparison with that of uncoated phosphor. SEM (scanning electron microscopy), powder XRD (X-ray diffraction) and EDX (energy dispersive X-ray) methods were used to characterize the coating.

KW - Coating

KW - Phosphor

KW - Stability and surface

KW - Sulfide

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