Autor segons l'article: Nexha A; Pujol MC; Carvajal JJ; Díaz F; Aguiló M
Departament: Química Física i Inorgànica
Autor/s de la URV: Aguiló Díaz, Magdalena / Carvajal Martí, Joan Josep / Díaz González, Francisco Manuel / Nexha, Albenc / Pujol Baiges, Maria Cinta
Paraules clau: Yttrium oxide White light emission Up-conversion emission Luminescence nanothermometry Lanthanide doping Colloidal nanocrystals yttrium oxide white light emission semiconductor nanocrystals quantum dots phosphor oxide nanoparticles oleic-acid nano-powders luminescence nanothermometry lanthanide doping emitting-diodes broad-band bright
Resum: Cubic Ho3+ and Tm3+ doped Y2O3 colloidal nanotriangles with lateral length sizes ∼43 nm, were synthesized via thermal decomposition methodology. These colloidal nanocrystals, upon high power excitation at 808 nm, generate white light. The crystalline structure, size and shape, and the surface of the colloidal nanocrystals, were investigated before and after being exposed to laser excitation. Factors that might affect the generation of white light, such as the power of excitation source, the stability of the emission with time, and the temperature at which the colloidal nanocrystals were exposed, are analyzed. The white light displayed temperature-dependence optical properties, allowing the application of these nanocrystals as luminescent nanothermometers over a wide range of temperatures, from room temperature to 473 K. The relative thermal sensitivity and the temperature resolution of these luminescent nanothermometers are 3.38% K−1 and 0.15 K, respectively, at 473 K, enabling to demonstrate a new highly sensitive mechanism for luminescence thermometry.
Àrees temàtiques: Química Optics Odontología Medicina ii Medicina i Materiais Interdisciplinar General chemistry Farmacia Ensino Engenharias iv Engenharias iii Engenharias ii Condensed matter physics Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciência de alimentos Chemistry (miscellaneous) Chemistry (all) Biotecnología Biophysics Biochemistry Atomic and molecular physics, and optics Astronomia / física
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
Adreça de correu electrònic de l'autor: joanjosep.carvajal@urv.cat magdalena.aguilo@urv.cat mariacinta.pujol@urv.cat f.diaz@urv.cat
Identificador de l'autor: 0000-0002-4389-7298 0000-0001-6130-9579 0000-0002-1052-8031 0000-0003-4581-4967
Data d'alta del registre: 2024-09-07
Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
Enllaç font original: https://www.sciencedirect.com/science/article/abs/pii/S0022231322001296
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Journal Of Luminescence. 247
Referència de l'ítem segons les normes APA: Nexha A; Pujol MC; Carvajal JJ; Díaz F; Aguiló M (2022). Luminescence nanothermometry via white light emission in Ho3+, Tm3+:Y2O3 colloidal nanocrystals. Journal Of Luminescence, 247(), -. DOI: 10.1016/j.jlumin.2022.118854
DOI de l'article: 10.1016/j.jlumin.2022.118854
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2022
Tipus de publicació: Journal Publications