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CHEMISTRY AND MATERIAL SCIENCE
Spectral-kinetic properties of LaF$_3$ nanoparticles doped with Ce$^{3+}$ and Sm$^{3+}$ ions after
microwave treatment and in core-shell structure
E. I. Madirov, E. V. Lukinova, A. S. Nizamutdinov, M. S. Pudovkin, S. L. Korableva, V. V. Semashko Kazan Federal University, Institute of Physics, 18, Kremlevskaja str., Kazan, 420008, Russia
Abstract:
Crystalline LaF$_3$:Sm$^{3+}$ and LaF$_3$:Ce$^{3+}$ nanoparticles were fabricated via a co-precipitation method. The obtained nanoparticles were 15–20 nm and had good crystallinity. Spectral-kinetic properties of crystalline LaF$_3$ nanoparticles activated with 5 % Sm$^{3+}$ and 12 % Ce$^{3+}$ 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 LaF$_3$:Sm$^{3+}$ nanoparticles, the additional microwave treatment increased the average luminescence lifetime
by 6 % and addition of the LaF$_3$ shell increased it by 18 %. In case of the LaF$_3$:Ce$^{3+}$ 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.
Keywords:
nanoparticle, rare-earth ions, fluoride, samarium, cerium.
Received: 20.10.2018 Revised: 19.11.2018
Citation:
E. I. Madirov, E. V. Lukinova, A. S. Nizamutdinov, M. S. Pudovkin, S. L. Korableva, V. V. Semashko, “Spectral-kinetic properties of LaF$_3$ nanoparticles doped with Ce$^{3+}$ and Sm$^{3+}$ ions after
microwave treatment and in core-shell structure”, Nanosystems: Physics, Chemistry, Mathematics, 9:6 (2018), 783–788
Linking options:
https://www.mathnet.ru/eng/nano370 https://www.mathnet.ru/eng/nano/v9/i6/p783
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Abstract page: | 91 | Full-text PDF : | 18 |
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