Synergistic luminescent thermometer using co-doped Ca₂GdSbO₆:Mn⁴⁺/(Eu³⁺ or Sm³⁺) phosphors

Abstract

Luminescent thermometers provide a non-contact method of probing temperature with high sensitivity and response speed in nanoscale. Synergistic photoluminescence from different activators can realize high sensitivity for luminescent thermometers through...

Designing bifunctional platforms for LED devices and luminescence lifetime thermometers: a case of non-rare-earth Mn4+ doped tantalate phosphors

“…As shown in Fig. 5(d), the maximum relative sensing sensitivity was found to be about 1.73% K −1 at 453 K, and it is excellent in comparison with some luminescent materials based on the TDL or LIR techniques, 40,[62][63][64][65][66][67][68][69][70][71][72][73][74] as summarized in Table 2.…”

Tunable luminescence in Eu3+/Sm3+ single-doped LuNbO4 for optical thermometry and anti-counterfeiting

“…Besides, the sensitivity obtained from LNO:Eu 3+ /Sm 3+ is basically higher than that of the previously reported phosphors based on FIR technology, as summarized in Table S5 (ESI†), suggesting that the LNO:Eu 3+ /Sm 3+ materials have huge potential for application in optical thermometry. To demonstrate the small variation in temperature, the temperature resolution (δ T ) could be calculated as follows: 42,43 where δΔ is the uncertainty in the measurement of Δ, as demonstrated in Fig. 6(d); it is evident that the δ T values present an upward trend with increasing Eu 3+ /Sm 3+ concentrations, while the δ T values of LNO:Sm 3+ is lower than those of LNO:Eu 3+ , implying that the LNO:Sm 3+ samples have better temperature resolution.…”

“…Besides, the sensitivity obtained from LNO:Eu 3+ /Sm 3+ is basically higher than that of the previously reported phosphors based on FIR technology, as summarized in Table S5 (ESI †), suggesting that the LNO:Eu 3+ / Sm 3+ materials have huge potential for application in optical thermometry. To demonstrate the small variation in temperature, the temperature resolution (dT) could be calculated as follows: 42,43 dT ¼…”

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

“…As the common non-contact thermometer, optical thermometry has been researched widely because of its high precision, small error, and low cost. − Over the last few decades, multiple optical temperature measurement methods have been developed and studied, for instance, emission intensity, fluorescence intensity ratio (FIR), decay lifetime, emission bandshift, etc. − Among them, FIR technology is the most popular temperature measuring mode due to its strong anti-interference ability, high precision, and simple operation. 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.…”