Repositori URV

Autor segons l'article: Ayachi, Fadwa; Saidi, Kamel; Dammak, Mohamed; Carvajal, Joan Josep; Pujol, Maria Cinta

Departament: Química Física i Inorgànica

Autor/s de la URV: Carvajal Martí, Joan Josep / Pujol Baiges, Maria Cinta

Paraules clau: Tungstates Photoluminescence Phosphors Luminescence Excited-state absorption

Resum: This study delves into the Single Band Ratiometric (SBR) method for luminescence thermometry, specifically employing Tb3+-doped LiSrGdW3O12 (LSGW) as a novel phosphor. The prepared samples crystallize with the tetragonal scheelite structure, with the optimal Tb3+ concentration pinpointed at 0.3Tb(3+) ions. When stimulated at diverse wavelengths exhibit luminescence characterized by varying heat dependencies. By utilizing two Fluorescence Intensity Ratio (FIR) parameters for the 544 nm green emission, firstly excited at 405 nm and 488 nm, and then at 405 nm and 379 nm, the Sr relative thermal sensitivity of the luminescent thermometer peaks at 3.56% K-1 and 4.21% K-1, respectively, within the temperature range of 290-440 K. The temperature resolution (delta T) of the luminescent thermometer is calculated to be delta T-1 = 0.68 K and delta T-2 = 0.75 K for T = 290 K, respectively. These outcomes underscore the applicability of Tb3+ ions for SBR thermometry, emphasizing the impact of the excitation wavelength on the thermal sensitivity. The study lays the groundwork for developing highly sensitive temperature probes by elucidating the interplay of material properties and physical processes.

Àrees temàtiques: Zootecnia / recursos pesqueiros Saúde coletiva Química Odontología Medicina veterinaria Medicina iii Medicina ii Medicina i Materiais Interdisciplinar Geociências General chemistry General chemical engineering Farmacia Ensino Engenharias iv Engenharias iii Engenharias ii Engenharias i Economia Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Chemistry, multidisciplinary Chemistry (miscellaneous) Chemistry (all) Chemical engineering (miscellaneous) Chemical engineering (all) Biotecnología Biodiversidade Astronomia / física

Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/

Adreça de correu electrònic de l'autor: mariacinta.pujol@urv.cat joanjosep.carvajal@urv.cat

Identificador de l'autor: 0000-0002-1052-8031 0000-0002-4389-7298

Data d'alta del registre: 2024-05-23

Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion

Enllaç font original: https://pubs.rsc.org/en/content/articlelanding/2024/ra/d4ra00626g

URL Document de llicència: http://repositori.urv.cat/ca/proteccio-de-dades/

Referència a l'article segons font original: Rsc Advances. 14 (19): 13494-13504

Referència de l'ítem segons les normes APA: Ayachi, Fadwa; Saidi, Kamel; Dammak, Mohamed; Carvajal, Joan Josep; Pujol, Maria Cinta (2024). Enhancing thermometric efficiency: a wavelength excitation analysis in LiSrGdW₃O₁₂:Tb<SUP>3+</SUP> for superior single band ratiometric (SBR) thermometry. Rsc Advances, 14(19), 13494-13504. DOI: 10.1039/d4ra00626g

DOI de l'article: 10.1039/d4ra00626g

Entitat: Universitat Rovira i Virgili

Any de publicació de la revista: 2024

Tipus de publicació: Journal Publications