Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Investigation of a New Red-Emitting, Eu3+-Activated MgAl2O4 Phosphor

  • Singh, Vijay (Department of Chemistry, College of Natural Sciences, Kyungpook National University) ;
  • Haque, Masuqul (Department of Chemistry, College of Natural Sciences, Kyungpook National University) ;
  • Kim, Dong-Kuk (Department of Chemistry, College of Natural Sciences, Kyungpook National University)
  • Published : 2007.12.20
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Abstract

MgAl2O4:Eu3+ red-light emitting powder phosphor was prepared at temperature as low as 500 oC within a few minutes by using the combustion route. The prepared powder was characterized by X-ray diffraction, scanning electron microscopy and Fourier-transform infrared spectrometry. The luminescence of Eu3+-activated MgAl2O4 shows a strong red emission dominant peak around 611 nm, which can be attributed to the 5D0-7F2 transition of Eu3+ ions from the synthesized phosphor particles under excitation (394 nm). Electron paramagnetic resonance (EPR) measurements at the X-band showed that no signal could be attributed to Eu2+ ions in MgAl2O4.

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