Articles
  • Effect of BaF2 flux on the photoluminescence properties of Y2.94Al5O12 : 0.06Ce3+ phosphors for white LED applications
  • H. Kima, J. Kimb, J. S. Hanc and K. Parka,*
  • a Faculty of Nanotechnology and Advanced Material Engineering, Sejong University, Seoul 143-747, Korea b Department of Advanced Materials Engineering, Hoseo University, Asan 336-795, Korea c Regional Innovation Center, Hoseo University, Asan 336-795, Korea
Abstract
We prepared Y2.94Al5O12 : 0.06Ce3+ phosphors by sol-gel method using BaF2 flux (0-8 wt%). The effect of BaF2 flux content on the crystal structure, morphology, and photoluminescence properties of the Y2.94Al5O12 : 0.06Ce3+ phosphors was investigated. XRD patterns revealed that all the prepared phosphors had the cubic crystal structure. The emission spectra had a broad emission band covering 460-750 nm, with a maximum emission intensity at 553 nm. The added BaF2 flux significantly improved the photoluminescence properties. The emission intensity peaking at 553 nm of 6 wt% BaF2-containing Y2.94Al5O12 : 0.06Ce3+ phosphors was above twice higher than that of BaF2-free Y2.94Al5O12 : 0.06Ce3+ phosphors. This result indicates that the BaF2 used as a flux was highly effective for improving the photoluminescence properties.

Keywords: Phosphor, BaF2 flux, LED, Ce3+, YAG.

This Article

  • 2016; 17(5): 405-408

    Published on May 31, 2016

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