caa a22 4500 445828250 CHVBK 20180317145305.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s10854-010-0273-x doi (NATIONALLICENCE)springer-10.1007/s10854-010-0273-x Combusion synthesis, structural and photo-physical characteristics of Eu2+ and Dy3+ co-doped SrAl2O4 phosphor nanopowders [Elektronische Daten] [Ehsan Shafia, Alireza Aghaei, Masoud Bodaghi, Mohammadreza Tahriri] In this research, we reported the synthesis of Eu2+ and Dy3+ co-doped SrAl2O4 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% H2+95% N2). The broad-band UV-excited luminescence of the SrAl2O4: Eu2+, Dy3+ nanopowders was observed at λ max=517nm due to transitions from the 4f65d1 to the 4f7 configuration of the emission center (Eu2+ ions). The excitation spectra consist of 240- and 254nm 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 SrAl2O4: Eu2+, Dy3+ phosphor nanopowders. Springer Science+Business Media, LLC, 2010 Shafia Ehsan Ceramic Department, Material and Energy Research Center (MERC), Tehran, Iran aut Aghaei Alireza Ceramic Department, Material and Energy Research Center (MERC), Tehran, Iran aut Bodaghi Masoud Ceramic Department, Material and Energy Research Center (MERC), Tehran, Iran aut Tahriri Mohammadreza Biomaterial Group, Faculty of Biomedical Engineering, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran aut Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/8(2011-08-01), 1136-1142 0957-4522 22:8<1136 2011 22 10854 https://doi.org/10.1007/s10854-010-0273-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10854-010-0273-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shafia Ehsan Ceramic Department, Material and Energy Research Center (MERC), Tehran, Iran aut NATIONALLICENCE 700 1- Aghaei Alireza Ceramic Department, Material and Energy Research Center (MERC), Tehran, Iran aut NATIONALLICENCE 700 1- Bodaghi Masoud Ceramic Department, Material and Energy Research Center (MERC), Tehran, Iran aut NATIONALLICENCE 700 1- Tahriri Mohammadreza Biomaterial Group, Faculty of Biomedical Engineering, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran aut NATIONALLICENCE 773 0- Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/8(2011-08-01), 1136-1142 0957-4522 22:8<1136 2011 22 10854 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer