Abstract：
:Ce(3+)-doped yttrium aluminum garnet (YAG:Ce) nanocrystals were successfully synthesized via a facile sol-gel method. Multiple characterization techniques were employed to study the structure, morphology, composition and photoluminescence properties of YAG:Ce nanophosphors. The YAG:Ce0.0055 sintered at 1030 °C exhibited a typical 5d(1)-4f(1) emission band with the maximum peak located at 525 nm, and owned a short fluorescence lifetime τ1 (~28 ns) and a long fluorescence lifetime τ2 (~94 ns). Calcination temperature and Ce(3+) doping concentration have significant effects on the photoluminescence properties of the YAG:Ce nanophosphors. The emission intensity was enhanced as the calcination temperature increased from 830 to 1030 °C, but decreased dramatically with the increase of Ce(3+) doping concentration from 0.55 to 5.50 at.% due to the concentration quenching. By optimizing the synthesized condition, the strongest photoluminescence emission intensity was achieved at 1030 °C with Ce(3+) concentration of 0.55 at.%.
journal_name
Sci Repjournal_title
Scientific reportsauthors
He X,Liu X,Li R,Yang B,Yu K,Zeng M,Yu Rdoi
10.1038/srep22238subject
Has Abstractpub_date
2016-03-03 00:00:00pages
22238issn
2045-2322pii
srep22238journal_volume
6pub_type
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