Autor segons l'article: Bhiri NM; Dammak M; Carvajal JJ; Aguiló M; Díaz F; Pujol MC
Departament: Química Física i Inorgànica
Autor/s de la URV: Aguiló Díaz, Magdalena / Carvajal Martí, Joan Josep / Díaz González, Francisco Manuel / Pujol Baiges, Maria Cinta
Paraules clau: 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
Resum: 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.
Àrees temàtiques: 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
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
Adreça de correu electrònic de l'autor: f.diaz@urv.cat mariacinta.pujol@urv.cat magdalena.aguilo@urv.cat joanjosep.carvajal@urv.cat
Identificador de l'autor: 0000-0003-4581-4967 0000-0002-1052-8031 0000-0001-6130-9579 0000-0002-4389-7298
Data d'alta del registre: 2024-06-22
Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
Enllaç font original: https://www.sciencedirect.com/science/article/abs/pii/S0025540822000757
URL Document de llicència: http://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Materials Research Bulletin. 151
Referència de l'ítem segons les normes 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
DOI de l'article: 10.1016/j.materresbull.2022.111801
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2022
Tipus de publicació: Journal Publications
Repositori URV