Autor según el artículo: Nexha A; Pujol MC; Carvajal JJ; Díaz F; Aguiló M
Departamento: Química Física i Inorgànica
Autor/es de la URV: Aguiló Díaz, Magdalena / Carvajal Martí, Joan Josep / Díaz González, Francisco Manuel / Nexha, Albenc / Pujol Baiges, Maria Cinta
Palabras clave: 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
Resumen: 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.
Áreas temáticas: 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
Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
Direcció de correo del autor: joanjosep.carvajal@urv.cat magdalena.aguilo@urv.cat mariacinta.pujol@urv.cat f.diaz@urv.cat
Identificador del autor: 0000-0002-4389-7298 0000-0001-6130-9579 0000-0002-1052-8031 0000-0003-4581-4967
Fecha de alta del registro: 2024-09-07
Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
Enlace a la fuente original: https://www.sciencedirect.com/science/article/abs/pii/S0022231322001296
URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
Referencia al articulo segun fuente origial: Journal Of Luminescence. 247
Referencia 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 del artículo: 10.1016/j.jlumin.2022.118854
Entidad: Universitat Rovira i Virgili
Año de publicación de la revista: 2022
Tipo de publicación: Journal Publications