Journal
MATERIALS LETTERS
Volume 73, Issue -, Pages 157-160Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2011.12.100
Keywords
Sr3Al2O6; Red long afterglow; Phosphors; Microwave processing; Sol-gel preparation; Nanoparticles
Funding
- 863 program [2007AA03Z423]
- Taiyuan University of Science and Technology [200726]
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Red long afterglow Sr3Al2O6:Eu2+, Dy3+ (S3A2O-ED) nanopowders have been prepared by using the conventional sol-gel process and the microwave heating technique. XRD confirmed a cubic Sr3Al2O6 single phase for the phosphors. The phosphor powders have a rod-like morphology with little aggregation and the nanorods with diameters of about 80 nm and lengths of about 1 mu m. The S3A2O-ED phosphors exhibited a broad excitation band chiefly in visible range and a red broad emission band of main peak at 612 nm under the excitation of 473 nm. Especially the S3A2O-ED phosphors prepared in 20 min of heating time at 680 W exhibited the strongest luminescent intensity and longest decay time. (C) 2011 Elsevier B.V. All rights reserved.
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