Open AccessLuminescence performance of laser synthesized Al2O3:Eu3+ nanophosphors depending on synthesis conditions
Author(s) -
Anton I. Kostyukov,
Aleksandr A. Nashivochnikov,
М. И. Рахманова,
В. Н. Снытников
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2067/1/012008
Subject(s) - luminescence , chromaticity , crystallite , materials science , analytical chemistry (journal) , electric dipole transition , ion , europium , dipole , chemistry , optics , optoelectronics , physics , magnetic dipole , organic chemistry , chromatography , metallurgy
Al 2 O 3 :Eu 3+ nanophosphors were prepared by laser vaporization method in a flowing mixture of Ar/He and O 2 . Luminescence properties of Al 2 O 3 :Eu 3+ nanophosphors are predominantly determined by Eu 3+ ions red emission with inhomogeneously broadened bands in the region of 550-750 nm corresponding to 5 D 0 → 7 F J transitions of Eu 3+ (J = 0 - 4). Hypersensitive electric dipole transition 5 D 0 → 7 F 2 dominates in the spectrum and is responsible for the red emission. The effect of crystallite size on luminescence properties of Al 2 O 3 :Eu 3+ nanocrystals was observed. It was shown that the introduction of oxygen during the synthesis improves the luminescence performance. The obtained chromaticity coordinates and high absolute QY (~ 14%) indicate the possibility of using red nanophosphors based on Al 2 O 3 :Eu 3+ .