%0 Journal Article
%T Preparation mechanism and luminescence of Sr<sub>2</sub>SiO<sub>4</sub>: Eu phosphor from (Sr, Eu)CO<sub>3</sub>@SiO<sub>2</sub> core-shell precursor
%A Yunsheng Hu
%A Weidong Zhuang
%A Jianhua Hao
%A Xiaowei Huang
%A Huaqiang He
%J Open Journal of Inorganic Chemistry
%P 6-11
%@ 2161-7414
%D 2012
%I Scientific Research Publishing
%R 10.4236/ojic.2012.21002
%X Sr<sub>2</sub>SiO<sub>4</sub>: Eu phosphor for white light emitting diodes (LEDs) was synthesized by employing an as-prepared (Sr, Eu)CO<sub>3</sub>@SiO<sub>2</sub> 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 ¦Â- and ¦Á¡ä-Sr<sub>2</sub>SiO<sub>4</sub>: 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)CO<sub>3</sub> diffusion controlled reaction process. Responded to its hybrid crystal structure, this phosphor exhibited the combined luminescence of ¦Â- and ¦Á¡ä-Sr<sub>2</sub>SiO<sub>4</sub>: Eu.
%K Phosphor
%K Precursor
%K Core-Shell Structure
%K Preparation Mechanism
%K Luminescence
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=16974