Journal of Ceramic Processing Research

Ceramic Processing Research Center (한양대학교 세라믹연구소)
권호 표지

Preparation and luminescence of $Sr_3MgSi_2O_8$ : $Eu^{2+}$ blue-emitting phosphors

  • Park, Jaehan (Department of Materials Science and Engineering, Kyonggi University) ;
  • Kim, Young Jin (Department of Materials Science and Engineering, Kyonggi University)
  • Published : 2014.06.01
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Abstract

$Sr_3MgSi_2O_8$ : $Eu^{2+}$ blue-emitting phosphors were prepared by a flux method and their luminescent properties were investigated. The excitation spectra were broad (250-500 nm), showing strong excitation intensities at 370-410 nm, while the intense blue emission was observed at around 460 nm assigned to the $4f^65d^1-4f^7$transition of the $Eu^{2+}$ ions incorporated into the Sr(I) sites. The strongest emission was obtained from the starting mixture with the excess Sr content. The emission intensity varied with firing temperatures, an amount of a flux, and the Eu content. These luminescent properties demonstrate that $Sr_3MgSi_2O_8$ : $Eu^{2+}$ powders are promising blue phosphors for use in white light emitting diodes using near ultraviolet chips.

Keywords

Acknowledgement

Supported by : National Research Foundation of Korea (NRF)

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