Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Two ratiometric thermometry methods based on the interplay between Eu2+ and Eu3+ and single Eu3+ emissions on OH--free low-silica calcium aluminosilicate glass

Full text
Author(s):
Zanuto, V. S. [1, 2] ; Capeloto, O. A. [2] ; Muniz, R. F. [3] ; Sandrini, M. [4] ; Rohling, J. H. [2] ; Baesso, M. L. [2] ; Nunes, L. A. O. [1]
Total Authors: 7
Affiliation:
[1] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560590 Sao Carlos, SP - Brazil
[2] Univ Estadual Maringa, Dept Fis, BR-87020900 Maringa, PR - Brazil
[3] Univ Estadual Maringa, Dept Ciencias, BR-87360000 Goioere, PR - Brazil
[4] Univ Tecnol Fed Parana UTFPR, Dept Acad Fis, BR-85503390 Pato Branco, PR - Brazil
Total Affiliations: 4
Document type: Journal article
Source: Materials Research Bulletin; v. 135, MAR 2021.
Web of Science Citations: 0
Abstract

The constant demand to accurately measure the temperature sheds light on luminescent materials that have dependence on their thermodynamic quantities. Several materials have been applied as sensors to measure temperature for different applications, however, very few showed high precision and sensitivity. This work reports the Eu2+/Eu3+-doped low-silica calcium aluminosilicate glass as a potential candidate for high sensitive ratiometric thermometer. The glass was analyzed close to the physiological temperature range, between 288.15-333.15K. Since this glassy matrix provides the presence of two europium valences, two different approaches are presented. The first takes into account the temperature dependence of D-5(0) -> F-7(4) emission for two different excitation wavelengths, and the second one is based on the interplay between Eu2+ and Eu3+ emissions. Both ratiometric approaches presented high reproducibility and relative sensitivity values, from 1.2 to 1.6 %/K and from 0.75 to 0.95 %/K, for the first and second approach, respectively. (AU)

FAPESP's process: 17/16392-6 - Non-linear Spectroscopy of Solids Doped with Rare Earth ions
Grantee:Vitor Santaella Zanuto
Support Opportunities: Scholarships in Brazil - Post-Doctoral