In this work, we focused on the syntheses, structure and spectroscopic properties of GdVO4:Dy3+ and DyVO4 (nano)particles of different sizes and shapes (spherical nanoparticles of 2 nm, 4 nm, and 20 nm in size, nanorods with a few nanometers in diameter and up to 10-20 nm in length and microparticles of 1 -8 mu m) obtained by four synthetic methods. The size effect on the structure, Raman active modes, and photoluminescence emission intensities was analyzed by X-ray diffraction, Raman and photo-luminescence spectroscopy, scanning and transmission electron microscopy, and diffuse reflection spectroscopy. All X-ray diffraction patterns clearly indicated presence of a single tetragonal zircon-type phase; absence of impurity phases indicate that the dopant Dy3+ ions were successfully and uniformly incorporated into the GdVO4 host lattice due to the equal valence and similar ionic radii. Micro-Raman measurements support the XRD measurements and showed Raman-active modes of the REVO4 systems (RE = Gd, Dy). The difference between the two hosts in the diffuse reflectance spectra was observed and it could be attributed to more effective Gd3+ ions on the charge transfer bands and different polarization (compared to bulk material) in smaller nanoparticles. Photoluminescence spectroscopy showed several bands in the visible and near-infrared regions which can be exclusively attributed to the f-f transitions of Dy3+ ions. (C) 2017 Elsevier B.V. All rights reserved.

Synthesis, structure and spectroscopic properties of luminescent GdVO4:Dy3+ and DyVO4 particles / Jovanovic, Dj; Chiappini, A; Zur, L; Gavrilovic, Tv; Tran, Tnl; Chiasera, A; Lukowiak, A; Smits, K; Dramicanin, Md; Ferrari, M. - In: OPTICAL MATERIALS. - ISSN 0925-3467. - 76:(2018), pp. 308-316. [10.1016/j.optmat.2017.12.046]

Synthesis, structure and spectroscopic properties of luminescent GdVO4:Dy3+ and DyVO4 particles

Chiasera A;
2018-01-01

Abstract

In this work, we focused on the syntheses, structure and spectroscopic properties of GdVO4:Dy3+ and DyVO4 (nano)particles of different sizes and shapes (spherical nanoparticles of 2 nm, 4 nm, and 20 nm in size, nanorods with a few nanometers in diameter and up to 10-20 nm in length and microparticles of 1 -8 mu m) obtained by four synthetic methods. The size effect on the structure, Raman active modes, and photoluminescence emission intensities was analyzed by X-ray diffraction, Raman and photo-luminescence spectroscopy, scanning and transmission electron microscopy, and diffuse reflection spectroscopy. All X-ray diffraction patterns clearly indicated presence of a single tetragonal zircon-type phase; absence of impurity phases indicate that the dopant Dy3+ ions were successfully and uniformly incorporated into the GdVO4 host lattice due to the equal valence and similar ionic radii. Micro-Raman measurements support the XRD measurements and showed Raman-active modes of the REVO4 systems (RE = Gd, Dy). The difference between the two hosts in the diffuse reflectance spectra was observed and it could be attributed to more effective Gd3+ ions on the charge transfer bands and different polarization (compared to bulk material) in smaller nanoparticles. Photoluminescence spectroscopy showed several bands in the visible and near-infrared regions which can be exclusively attributed to the f-f transitions of Dy3+ ions. (C) 2017 Elsevier B.V. All rights reserved.
2018
Jovanovic, Dj; Chiappini, A; Zur, L; Gavrilovic, Tv; Tran, Tnl; Chiasera, A; Lukowiak, A; Smits, K; Dramicanin, Md; Ferrari, M
Synthesis, structure and spectroscopic properties of luminescent GdVO4:Dy3+ and DyVO4 particles / Jovanovic, Dj; Chiappini, A; Zur, L; Gavrilovic, Tv; Tran, Tnl; Chiasera, A; Lukowiak, A; Smits, K; Dramicanin, Md; Ferrari, M. - In: OPTICAL MATERIALS. - ISSN 0925-3467. - 76:(2018), pp. 308-316. [10.1016/j.optmat.2017.12.046]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/342822
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