Spectral-kinetic properties of LaF3 nanoparticles doped with Ce3+ and Sm3+ ions after microwave treatment and in core-shell structure
https://doi.org/10.17586/2220-8054-2018-9-6-783-788
Abstract
Crystalline LaF3:Sm3+ and LaF3:Ce3+ nanoparticles were fabricated via a co-precipitation method. The obtained nanoparticles were 15 – 20 nm and had good crystallinity. Spectral-kinetic properties of crystalline LaF3 nanoparticles activated with 5 % Sm3+ and 12 % Ce3+ ions were studied. Various duration of the microwave treatment as well as core-shell structure were studied as possible ways to control quenching in the nanoparticles. In case of the LaF3:Sm3+ nanoparticles, the additional microwave treatment increased the average luminescence lifetime by 6 % and addition of the LaF3 shell increased it by 18 %. In case of the LaF3:Ce3+ sample, microwave treatment increased the average lifetime by up to 20 %. The observed effects of varying the synthetic conditions and composite core-shell structure on luminescence properties of nanoparticles provide a means to manage the energy loss in the nanoparticles due to the quenching factors.
Supporting agencies: Studies were carried out in the frame of the state assignment in the sphere of scientific activities (Projects No. 3.1156.2017/4.6 and No. 3.5835.2017/6.7). Authors are grateful to specialists of Interdisciplinary Center of Analytical Microscopy of Kazan Federal University for microscopy studies.
About the Authors
E. I. Madirov
Kazan Federal University, Institute of Physics
Russian Federation
Russian Federation
18, Kremlevskaja str., Kazan, 420008
E. V. Lukinova
Kazan Federal University, Institute of Physics
Russian Federation
Russian Federation
18, Kremlevskaja str., Kazan, 420008
A. S. Nizamutdinov
Kazan Federal University, Institute of Physics
Russian Federation
Russian Federation
18, Kremlevskaja str., Kazan, 420008
M. S. Pudovkin
Kazan Federal University, Institute of Physics
Russian Federation
Russian Federation
18, Kremlevskaja str., Kazan, 420008
S. L. Korableva
Kazan Federal University, Institute of Physics
Russian Federation
Russian Federation
18, Kremlevskaja str., Kazan, 420008
V. V. Semashko
Kazan Federal University, Institute of Physics
Russian Federation
Russian Federation
18, Kremlevskaja str., Kazan, 420008
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Review
For citations:
Madirov E.I., Lukinova E.V., Nizamutdinov A.S., Pudovkin M.S., Korableva S.L., Semashko V.V. Spectral-kinetic properties of LaF3 nanoparticles doped with Ce3+ and Sm3+ ions after microwave treatment and in core-shell structure. Nanosystems: Physics, Chemistry, Mathematics. 2018;9(6):783–788. https://doi.org/10.17586/2220-8054-2018-9-6-783-788
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