Advancements in excited state absorption-based luminescence thermometry

Abstract

Luminescence thermometry is experiencing an growing fundamental research interest, which is additionally stimulated by the needs and challenges requested by the other fields of science and technology. Despite numerous temperature...

Eu3+ Single-Doped Phosphor with Antithermal Quenching Behavior and Multicolor-Tunable Properties for Luminescence Thermometry

“…The FIR technology typically requires two luminescent centers with different responses to temperature. , Therefore, lanthanide and transition-metal ions co-doped phosphors have been extensively applied in optical temperature measurements based on FIR technology. To acquire high relative sensitivity ( S r ), lanthanide ions (Ln 3+ ) (such as Eu 3+ , Tb 3+ , Dy 3+ , and Sm 3+ ) are used as the reference signal, while transition-metal ions (such as Mn 4+ , Bi 3+ ) are chosen as detected signals due to their different thermal quenching mechanisms. − For instance, the ground state of Bi 3+ intersects with the excited state, and more electrons get back to the ground-state energy level by nonradiative transitions with the temperature increasing. Hence, Bi 3+ is extremely sensitive to temperature owing to the energy-level cross-relaxation (ELCR).…”

ZnTe Crystal Multimode Cryogenic Thermometry Using Raman and Luminescence Spectroscopy

“…Traditional thermometers, such as liquid-filled and bimetallic thermometers, thermocouples, and thermo-resistance, generally require physical contact and thermal transmission, severely restricting their applications in moving objects, hazardous and inaccessible locations, or micro/nanoscale [ 6 , 7 , 8 ]. To overcome these limitations, remote temperature sensing based on monitoring the changes in the optical properties of samples was proposed [ 9 , 10 , 11 , 12 , 13 ]. Optical thermometry can be realized via the following methods: optical interferometry, near-field optical scanning microscopy, Raman scattering, and luminescence spectroscopy [ 7 , 14 , 15 ].…”

Thermometric properties of Na 2Y 2TeB 2O 10:Tb 3+ green phosphor based on fluorescence/excitation intensity ratio

“…Temperature is a vital parameter in industrial and civil areas, which makes developing temperature-detecting technology significant [1][2][3]. The shortcomings of conventional contact thermometers include environmental restrictions and long response time, which gradually cannot meet the actual usage requirements [4][5][6]. Hereby, Ghahrizjani et al [7] and Cheng et al [8] have paid much research to noncontact temperature-detecting technologies.…”