Author, as appears in the article.: Bhiri NM; Dammak M; Carvajal JJ; Aguiló M; Díaz F; Pujol MC
Department: Química Física i Inorgànica
URV's Author/s: Aguiló Díaz, Magdalena / Carvajal Martí, Joan Josep / Díaz González, Francisco Manuel / Pujol Baiges, Maria Cinta
Keywords: Temperature sensing properties Stoichiometry Non-saturation regime Laser heating Fluorescence intensity ratio Er /yb : y gd vo 3+ 3+ u w 4 yb3+/er3+ upconverting nanoparticles up-conversion fluorescence stoichiometry sensitive thermographic phosphor red phosphors photoluminescence properties non-saturation regime nanothermometers nanocrystals laser heating glass er3+/yb3+: yugdwvo4
Abstract: The performance of YuGdwVO4 microcrystals with different atomic concentrations of Y3+ and Gd3+ ions, co-doped Er3+-Yb3+, as thermometers, exploiting two different calculation methods based on the fluorescence intensity ratio is investigated in the non-saturation regime. At a low excitation power density of 20 W cm−2, the thermometric parameters are approximately the same for all the analyzed sensors. Whereas for an excitation power density of 155 W cm−2, they are widely different all along the 303–513 K temperature range of study. Such as an increase on the Gd3+ ion concentration in the microcrystals induces a lattice expansion that can result in the decreasing of the lattice field surrounding the Er3+ ions and then it could enhance greatly the thermometric performances. For both calculation methods, it has been demonstrated that the ∆EFIR (fitted from the FIR curves) and the ∆ETS (determined using the TeSen Calculator program) values are lower than the ∆E` experimental (fitted from the emission spectra measured at room temperature), whenever the sample is heated and then the thermometric parameters are less competitive.
Thematic Areas: Química Odontología Mechanics of materials Mechanical engineering Materials science, multidisciplinary Materials science (miscellaneous) Materials science (all) Materials science Materiais Interdisciplinar Geociências General materials science Farmacia Ensino Engenharias iv Engenharias iii Engenharias ii Engenharias i Condensed matter physics Biotecnología Astronomia / física Arquitetura, urbanismo e design
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: joanjosep.carvajal@urv.cat magdalena.aguilo@urv.cat mariacinta.pujol@urv.cat f.diaz@urv.cat
Author identifier: 0000-0002-4389-7298 0000-0001-6130-9579 0000-0002-1052-8031 0000-0003-4581-4967
Record's date: 2024-09-07
Papper version: info:eu-repo/semantics/acceptedVersion
Link to the original source: https://www.sciencedirect.com/science/article/abs/pii/S0025540822000757
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Materials Research Bulletin. 151
APA: Bhiri NM; Dammak M; Carvajal JJ; Aguiló M; Díaz F; Pujol MC (2022). Stoichiometric dependence and laser heating effect on the luminescence thermometric performance of Er3+, Yb3+: YuGdwVO4 microparticles in the non-saturation regime. Materials Research Bulletin, 151(), -. DOI: 10.1016/j.materresbull.2022.111801
Article's DOI: 10.1016/j.materresbull.2022.111801
Entity: Universitat Rovira i Virgili
Journal publication year: 2022
Publication Type: Journal Publications
Repositori URV