Fluorescence Lifetime-Based Luminescent Thermometry Material with Lifetime Varying over a Factor of 50.
Inorg Chem
; 61(41): 16468-16476, 2022 Oct 17.
Article
em En
| MEDLINE
| ID: mdl-36197311
ABSTRACT
Recently, the growing demand for temperature detection is pushing forward the flourishing development of noncontact optical thermometry. Herein, a new red phosphor Sr2InTa1-xO6xMn4+ (SITxMn4+) was first constructed and systematically investigated. Based on the fairly rapid decline of the lifetime from 0.403 to 0.008 ms by increasing the temperature from 25 to 450 K, a noncontact optical thermometer can be made from phosphor SIT0.003Mn4+ with Sr = 1.396% K-1 at 375 K and Sa = 0.0012 K-1 at 300 K. Because the luminescence is based on the outermost 3d orbits of Mn4+, the lifetime of SITxMn4+ is quite sensitive to the temperature, leading to a rapid decline of the lifetime with the increase in temperature. Moreover, multiple rounds of variable-temperature studies were performed to demonstrate the stability and reversibility of SIT0.003Mn4+. This work suggests that Mn4+-phosphors are promising candidates for application as optical thermometric material.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Luminescência
/
Termometria
Idioma:
En
Revista:
Inorg Chem
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
China