Microwave synthesis technique for long phosphorescence phosphor SrAl2O4:Eu2+, Dy3+ using carbon reduction

As described herein, we prepared SrAl2O4:Eu2+, Dy3+ phosphor using a domestic microwave oven operated at 2.45 GHz with 500 Win 30 min, processes with carbon reduction. Using carbon as the microwave absorber it generates thermal energy. Furthermore, heating with carbon can provide a reductive atmosphere. Prepared samples emitted phosphorescence emission for a long time. (C) 2009 Elsevier B.V. All rights reserved.