RT Journal Article
T1 Impact of synthesis methods and coordination agents on the structure, morphology, and luminescent efficiency of triple-doped Nd3+, Yb3+ and Tm3+ yttrium orthovanadate
A1 Alcolea Palafox, Mauricio
A1 Isasi Marín, Josefa
A1 Rapp, María
A1 Ortíz Rivero, Elisa
AB The research and study of novel fluorescent nanomaterials based on lanthanide ions that can be excited by infrared radiation is essential for the development of new technologies in the biomedicine, photonics, and optoelectronics fields. The present work focuses on the structural and morphological study of new orthovanadate Y0.9Nd0.02Tm0.03Yb0.05VO4 and Y0.9Nd0.02Tm0.05Yb0.03VO4 samples. Their optical properties were also analyzed, including the evaluation of up-conversion (UC) and down-conversion (DS) mechanisms under infrared excitation at 980 nm and 808 nm. The samples were synthesized using both the sol-gel method and hydrothermal synthesis with urea and citric acid (CA) or maleic acid (MA) addition. These samples were reacted with tetraethyl orthosilicate (TEOS) to obtain silica-coated samples. X-ray diffraction (XRD) analysis confirmed the tetragonal symmetry compatible with a zircon-type structure of the diffraction pattern. FTIR spectra revealed bands corresponding to the several vibrational modes of VO4 3− groups and the presence of silica in the TEOS-treated samples. The synthesis method and the addition of CA or MA influenced the agglomeration, shape and morphology of the particles, as evidenced by transmission electron microscopy images. Photoluminescence (PL) studies of investigated samples after being excited with infrared radiation provided a detailed description of the energy transfer mechanisms involved in the DS and UC processes. These processes are related to the synthesis method used to obtain them and to the chelating agents added. Excitation of the samples at 808 nm generates DS processes and PL spectra with bright emission bands corresponding to electronic transitions of the Nd3+ and Yb3+ ions, while excitation at 808 and 980 nm gives rise to UC processes and PL spectra showing intense blue, red and NIR-I emission bands of Tm3+ ions, along with green and red emissions of Nd3+ ions.
PB Elsevier
YR 2025
FD 2025-02-02
LK https://hdl.handle.net/20.500.14352/132870
UL https://hdl.handle.net/20.500.14352/132870
LA eng
NO María Rapp, Elisa Ortiz-Rivero, Josefa Isasi, Mauricio Alcolea Palafox, Impact of synthesis methods and coordination agents on the structure, morphology, and luminescent efficiency of triple-doped Nd3+, Yb3+ and Tm3+ yttrium orthovanadate, Ceramics International, Volume 51, Issue 13, 2025, Pages 18073-18085, ISSN 0272-8842, https://doi.org/10.1016/j.ceramint.2025.01.583. (https://www.sciencedirect.com/science/article/pii/S0272884225006406)
NO Ministerio de Ciencia, Innovación y Universidades
NO Instituto de Salud Carlos III
NO Universidad Autónoma de Madrid
NO Comunidad de Madrid
DS Docta Complutense
RD 13 may 2026