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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 28, Number 12
BKCSDE 28(12)
December 20, 2007 
 
Title
 Investigation of a New Red-Emitting, Eu3+-Activated MgAl2O4 Phosphor
Author
 Vijay Singh, MD. Masuqul Haque, Dong-Kuk Kim*
Keywords
 Combustion, Dopant, Phosphor, Photoluminescence, Electron spin resonance
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.
Page
 2477 - 0
Full Text
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