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- Title
Combusion synthesis, structural and photo-physical characteristics of Eu and Dy co-doped SrAlO phosphor nanopowders.
- Authors
Shafia, Ehsan; Aghaei, Alireza; Bodaghi, Masoud; Tahriri, Mohammadreza
- Abstract
In this research, we reported the synthesis of Eu and Dy co-doped SrAlO phosphor nanopowders with high brightness and long afterglow by urea-nitrate solution combustion synthesis (SCS) at 600 °C, followed by heating the resultant combustion ash at 1,200 °C in a weak reductive atmosphere (5% H + 95% N). The broad-band UV-excited luminescence of the SrAlO: Eu, Dy nanopowders was observed at λ = 517 nm due to transitions from the 4f5d to the 4f configuration of the emission center (Eu ions). The excitation spectra consist of 240- and 254 nm broad peaks. Finally, it was found that the optimum ratio of urea is 2.5 times higher than theoretical quantities for the best emission condition of SrAlO: Eu, Dy phosphor nanopowders.
- Subjects
COMBUSTION; PHOSPHORS; PHOSPHORIMETRY; PHOTOLUMINESCENCE; ALKALINE earth metals; NANOCRYSTALS; SELF-propagating high-temperature synthesis
- Publication
Journal of Materials Science: Materials in Electronics, 2011, Vol 22, Issue 8, p1136
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-010-0273-x