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

Autor(es)

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]

Afiliação do(s) autor(es)

^[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

• Tipo de documento: Artigo Científico
• Fonte: Materials Research Bulletin; v. 135, MAR 2021.
• Citações Web of Science: 0

Resumo

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)

• Processo FAPESP: 17/16392-6 - Espectroscopia Não-linear em Sólidos Dopados com íons Terras Raras
• Beneficiário: Vitor Santaella Zanuto
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado