Eu2+, Eu3+ and Sm3+ emission in SrAl12O19 phosphors prepared via combustion synthesis

Strontium hexa‐aluminate phosphors activated with Eu3+ and Sm3+ ions were produced at low temperatures (500 °C) by the combustion of corresponding metal nitrate–urea mixtures over a period of 5 min. Powder X‐ray diffraction characterization and photoluminescence studies of these samples were carried out. It was found that co‐doping of Sm3+ ions helps in the partial reduction of Eu3+ ions to Eu2+ ions in SrAl12O19. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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