Doping level effect on the luminescence efficiency of Sm³⁺-doped BaWO₄ phosphors prepared by sol-gel process
by H-Y. He
International Journal of Materials and Structural Integrity (IJMSI), Vol. 10, No. 1/2/3, 2016

Abstract: The Sm-doped BaWO₄ phosphor powders with Sm content of 0-7.5 at.% were fabricated with a sol-gel method. X-ray diffraction analysis, scanning electron microscopy, and photoluminescence spectra analysis were used to characterise the microstructural and photoluminescence efficiency. The effect of Sm doping level was studied. A granular particle morphology and decreased nanoscale average particles size with increasing Sm-doping level were observed. The matrix showed weak violet-blue emission. The Sm³⁺ in the BaWO₄ matrix showed red emission that is obviously stronger than violet-blue emission of the matrix. A maximal doping level of Sm³⁺ cation was observed for a highest emission efficiency of Sm³⁺ cation.

Online publication date: Thu, 06-Oct-2016

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