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Preparation mechanism and luminescence of Sr2SiO4: Eu phosphor from (Sr, Eu)CO3@SiO2 core-shell precursor

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DOI: 10.4236/ojic.2012.21002    5,960 Downloads   15,330 Views   Citations

ABSTRACT

Sr2SiO4: Eu phosphor for white light emitting diodes (LEDs) was synthesized by employing an as-prepared (Sr, Eu)CO3@SiO2 core-shell precursor as starting materials, and the effect of the core-shell precursor was also discussed on the crystal structure, particle morphology and luminescent properties of the resultant phosphor. The results showed that the hybrid β- and α′-Sr2SiO4: Eu phosphor with fine particle size and narrow distribution could be obtained at a lower firing temperature than that in conventional solidstate reaction method, and its formation mechanism was deduced to be (Sr, Eu)CO3 diffusion controlled reaction process. Responded to its hybrid crystal structure, this phosphor exhibited the combined luminescence of β- and α′-Sr2SiO4: Eu.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Hu, Y. , Zhuang, W. , Hao, J. , Huang, X. and He, H. (2012) Preparation mechanism and luminescence of Sr2SiO4: Eu phosphor from (Sr, Eu)CO3@SiO2 core-shell precursor. Open Journal of Inorganic Chemistry, 2, 6-11. doi: 10.4236/ojic.2012.21002.

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