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A Novel Single-Source Precursor Route for the Synthesis of Blue-Green Phosphor SrS:Ce<sup>3+</sup>
A Novel Single-Source Precursor Route for the Synthesis of Blue-Green Phosphor SrS:Ce3+
Bulletin of the Korean Chemical Society. 2014. Jul, 35(7): 2148-2150
Copyright © 2014, Korea Chemical Society
  • Received : January 09, 2014
  • Accepted : March 06, 2014
  • Published : July 20, 2014
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About the Authors
Yishan Song
Zheng Li
Chenchen Ma

Abstract
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Experimental
Preparation of SrS:Ce 3+ phosphor. In a typical synthesis, 99 mol % of SrCl 2 ·6H 2 O and 1 mol % of Ce(NO 3 ) 3 ·6H 2 O were dissolved in 95% ethanol, and the solution was stirred for 2 h to form a homogeneous solution. Then another Na-DDTC (DDTC = N,N -diethyldithiocarbamate) ethanol solution (the DDTC/Sr 2+ ratio was 2:1 with a slight excess of ligand) was added slowly to the metal salt solution under stirring condition. The stirring of the resultant solution was continued for another 2 h (the solution was concentrated by solvent evaporation), which resulted in precipitation of the yellow colored Sr 0.99 Ce 0.01 -DDTC 2 complex. The precipitate of product was filtered and then dried at 40 ℃ for 6 h. The solid was then fired in a tube furnace at 700 ℃, 800 ℃, and 900 ℃ for 3 h under N 2 atmosphere.
Measurements and Apparatus. The X-ray powder diffraction (XRD) patterns of all samples were performed on a Bruker/D8-Advance with CuKα radiation (λ = 1.540 Å). The luminescence (excitation and emission) spectra for the solid sample were determined with a Perkin-Elmer LS-55 spectrophotometer, whole excitation and emission slit width were 10 and 5 nm, respectively.
Acknowledgements
Publication cost of this paper was supported by the Korean Chemical Society.
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