Dual-mode optical ratiometric thermometry using Pr³⁺-doped NaSrGd(MoO₄)₃ phosphors with tunable sensitivity

Abstract

Owing to some special superior features, luminescence ratiometric thermometry has acquired popularity, particularly dual excitation single emission (SBR) and single excitation dual emission (FIR).

Enhancing thermometric efficiency: a wavelength excitation analysis in LiSrGdW3O12:Tb3+ for superior single band ratiometric (SBR) thermometry

“…13. The calculation used to ascertain the repeatability ( R ) was as follows: 39,40 where M i ( T ) c represents the measured parameter (FIR) in the i th cycle and M ( T ) c over 10 cycles. The determined FIR values exhibit reversible changes with temperature, with the FIR values for 405/486 and 405/379 being 98% and 97%, respectively, within the measured temperature range.…”

The dual-model up/down-conversion green luminescence of NaSrGd(MoO4)3: Er3+ and its application for temperature sensing

“…These materials exhibit broad and intense absorption bands in the near-UV region, primarily attributed to charge transfer (CT) transitions. 4–8 The NSGM is highly regarded as an excellent luminescent material capable of efficient up/down-conversion emission. This is due to its stable physical and chemical properties, as well as its notably low phonon energy.…”