caa a22 4500 463234634 CHVBK 20180405153253.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s10853-006-1097-1 doi (NATIONALLICENCE)springer-10.1007/s10853-006-1097-1 Roles of doping ions in persistent luminescence of SrAl2O4:Eu2+, RE3+ phosphors [Elektronische Daten] [Xingdong Lü, Wangen Shu, Qin Fang, Quanmao Yu, Xinqiang Xiong] The polycrystalline Eu2+ and RE3+ co-doped strontium aluminates SrAl2O4:Eu2+, RE3+ were prepared by solid state reactions. The UV-excited photoluminescence, persistent luminescence and thermo-luminescence of the SrAl2O4:Eu2+, RE3+ phosphors with different composition and doping ions were studied and compared. The results showed that the doped Eu2+ ion in SrAl2O4:Eu2+, Dy3+ phosphors works as not only the UV-excited luminescent center but also the persistent luminescent center. The doped Dy3+ ion can hardly yield any luminescence under UV-excitation, but can form a electron trap with appropriate depth and greatly enhance the persistent luminescence and thermo-luminescence of SrAl2O4:Eu2+. Different co-doping RE3+ ions showed different effects on persistent luminescence. Only the RE3+ ion (e.g. Dy3+, Nd3+), which has a suitable optical electro-negativity, can form the appropriate electron trap and greatly improve the persistent luminescence of SrAl2O4:Eu2+. Based on above observations, a persistent luminescence mechanism, electron transfer model, was proposed and illustrated. Springer Science+Business Media, LLC, 2007 Lü Xingdong Institute of Functional Materials, Jiangxi University of Finance and Economy, 330013, Nanchang, P.R. China aut Shu Wangen College of Chemistry and Chemical Engineering, Central South University, 410083, Changsha, P.R. China aut Fang Qin Institute of Functional Materials, Jiangxi University of Finance and Economy, 330013, Nanchang, P.R. China aut Yu Quanmao Institute of Functional Materials, Jiangxi University of Finance and Economy, 330013, Nanchang, P.R. China aut Xiong Xinqiang Institute of Functional Materials, Jiangxi University of Finance and Economy, 330013, Nanchang, P.R. China aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/15(2007-08-01), 6240-6245 0022-2461 42:15<6240 2007 42 10853 https://doi.org/10.1007/s10853-006-1097-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1097-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lü Xingdong Institute of Functional Materials, Jiangxi University of Finance and Economy, 330013, Nanchang, P.R. China aut NATIONALLICENCE 700 1- Shu Wangen College of Chemistry and Chemical Engineering, Central South University, 410083, Changsha, P.R. China aut NATIONALLICENCE 700 1- Fang Qin Institute of Functional Materials, Jiangxi University of Finance and Economy, 330013, Nanchang, P.R. China aut NATIONALLICENCE 700 1- Yu Quanmao Institute of Functional Materials, Jiangxi University of Finance and Economy, 330013, Nanchang, P.R. China aut NATIONALLICENCE 700 1- Xiong Xinqiang Institute of Functional Materials, Jiangxi University of Finance and Economy, 330013, Nanchang, P.R. China aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/15(2007-08-01), 6240-6245 0022-2461 42:15<6240 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 462692949 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer