Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Structural and Optical Properties of Yellow-Emitting CaGd2ZrSc(AlO4)3:Ce3+ Phosphor for Solid-State Lighting

  • Kim, Yoon Hwa (School of Materials Science and Engineering and Optolelectronics Convergence Research Center, Chonnam National University) ;
  • Kim, Bo Young (School of Materials Science and Engineering and Optolelectronics Convergence Research Center, Chonnam National University) ;
  • Viswanath, Noolu S.M. (School of Materials Science and Engineering and Optolelectronics Convergence Research Center, Chonnam National University) ;
  • Arunkumar, Paulraj (School of Materials Science and Engineering and Optolelectronics Convergence Research Center, Chonnam National University) ;
  • Im, Won Bin (School of Materials Science and Engineering and Optolelectronics Convergence Research Center, Chonnam National University)
  • Received : 2017.07.03
  • Accepted : 2017.09.08
  • Published : 2017.09.30
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Abstract

Single-phase yellow phosphor, $CaGd_{2-x}ZrSc(AlO_4)_3:xCe^{3+}$ ($CGZSA:Ce^{3+}$), possessing cubic symmetry with varied $Ce^{3+}$ concentrations, was synthesized using the solid-state reaction method. The samples were characterized using X-ray diffraction (XRD), excitation spectra, emission spectra, thermal quenching, and decay curves. The cubic phase of $CGZSA:Ce^{3+}$ phosphor was confirmed via XRD analysis. The photoluminescence spectra of $CGZSA:Ce^{3+}$ phosphor demonstrated that the phosphor could be excited at the wavelength of 440 nm; a broad yellow emission band was centered at 541 nm. These results indicate that the phosphors are adequately excited by blue light and have the potential to function as yellow-emitting phosphors for applications in white light-emitting diodes.

Keywords

References

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