The Influence of BaF2 Flux Concentration on the Luminescence of Sr3SiO5:Eu2+

Guo Feng Xu; Quan Sheng Liu; Li Zhao; Dan Dan Cao; Rui Wang; Yu Ping Luo; Zhao Guo; Xi Yan Zhang

doi:10.4028/www.scientific.net/AMR.239-242.1400

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 239-242The Influence of BaF2 Flux Concentration on the...

The Influence of BaF₂ Flux Concentration on the Luminescence of Sr₃SiO₅:Eu²⁺

Abstract:

Silicate strontium phosphor for white light LEDs was synthesized by high temperature solid-state method. The structure, surface, excitation and emission spectra of Sr₃SiO₅: Eu²⁺ phosphor which contain different mass fractions of BaF₂ were measured. The results show that BaF₂ quantity affects the structure, surface and spectra of Sr₃SiO₅: Eu²⁺ sample. The sample has the best properties when the BaF₂ concentration comes to 2.0wt%. The structure of sample is tetragonal phase Sr₃SiO₅. The emission and excitation spectra peaks locate respectively at 575nm and 537nm. The samples can be excited by InGaN blue chip. The emission peaks appeared apparent red shift with the increase of BaF₂ concentration. A white light emission spectrum with good color rendition was obtained by coupling the phosphor with blue chip.

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Periodical:

Advanced Materials Research (Volumes 239-242)

Pages:

1400-1404

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.239-242.1400

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Online since:

May 2011

Authors:

Guo Feng Xu, Quan Sheng Liu, Li Zhao, Dan Dan Cao, Rui Wang, Yu Ping Luo, Zhao Guo, Xi Yan Zhang

Keywords:

Flux BaF2, Luminescence, Sr₃Sio₅:eu²⁺ Phosphor, White LEDs

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