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http://dx.doi.org/10.5012/bkcs.2007.28.12.2477

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)
Publication Information
Bulletin of the Korean Chemical Society / v.28, no.12, 2007 , pp. 2477-2480 More about this Journal
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.
Keywords
Combustion; Dopant; Phosphor; Photoluminescence; Electron spin resonance;
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