Combustion synthesis and characterization of nanosized powder SrAl2O4:Eu2+ phosphor

Calyn S.; Nazarov Michael V.; Nazida AwangNor; Ahmad-Fauzi M.

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2021-04-07 18:38

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CALYN, S., NAZAROV, Michael V., NAZIDA, AwangNor, AHMAD-FAUZI, M.. Combustion synthesis and characterization of nanosized powder SrAl2O4:Eu2+ phosphor. In: Moldavian Journal of the Physical Sciences, 2012, nr. 1-2(11), pp. 112-123. ISSN 1810-648X.

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Moldavian Journal of the Physical Sciences

Numărul 1-2(11) / 2012 / ISSN 1810-648X /ISSNe 2537-6365

Combustion synthesis and characterization of nanosized powder SrAl2O4:Eu2+ phosphor

Pag. 112-123

Calyn S.¹, Nazarov Michael V.²¹, Nazida AwangNor¹, Ahmad-Fauzi M.¹

¹ School of Materials and Mineral Resources Engineering, University Sains Malaysia,
² Institute of Applied Physics, Academy of Sciences of Moldova

Disponibil în IBN: 16 decembrie 2013

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A stoichiometric SrAl2O4:Eu2 nanosized powder was synthesized by combustion synthesis using urea at 500°C. The crystal structure, element and phase composition, and particle size were analyzed with the aim to study the properties of nanosized SrAl2O4:Eu2 green phosphor and its application. X-ray Diffraction pattern revealed that the SrAl2O4:Eu2 crystallizes were a major phase, and Sr4Al14O25 as a secondary phase with a small amount of the dopant has no effect on the crystal structure of SrAl2O4. Crystalline structure can be observed and enhanced by calcination at 1000ºC with 2-h soaking time in a reductive atmosphere. Nucleation of particles occurs and forms a needle-like structure for SrAl2O4 and a star-like structure for SrAl2O4:Eu2 . This structure is unstable and agglomerates during calcination at 1000 °C to form a stable specific flower-like structure which enhances the glowing effect of the samples.

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