Lanthanide-doped lead-free double perovskite La₂MgTiO₆ as ultra-bright multicolour LEDs and novel self-calibrating partition optical thermometer

Abstract

The infinite potential of lanthanide in optoelectronic research has triggered the search for ideal host materials. Herein, based on excellent lanthanide compatible of double perovskite La2MgTiO6, light response multifunctional phosphors...

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

“…S6a–f †. The calculate utilized to determine the repeatability ( R ) was as follows: 59–62 where M i ( T ) c is the measured parameter (FIR or band centroid) in the i th cycle and M ( T ) c is the mean value of the M ( T ) c over 10 cycles. The determined FIR values change reversibly with temperature, and the FIR values for all FIRs were greater than 97%, in the measured temperature range, which confirms the good repeatability and reliability of the applied thermometric methods.…”

Eulytite-type Ba3Yb(PO4)3:Tm/Er/Ho as a high sensitivity optical thermometer over a broad temperature range

“…32–35 Hence, it becomes urgently necessary to design and develop fluorescent materials characterized by exceptional sensitivity across a broad spectrum of temperatures. 36–38…”

Regulating the upconversion luminescence properties of Tm3+/Yb3+-codoped ZrScW2PO12 microparticles with a negative thermal expansion effect through thermal stimulation for optical thermometry

“…16,17 Besides, Utochnikova et al also theoretically analyzed the S r value of terbium-europium coordination compounds in a four-level system. 18 Interestingly, researchers also tried to utilize the LIR technique to analyze the temperature-related fluorescence intensities of two emissions arising from two different emitting centers or non-thermally coupled levels (non-TCLs), 19,20 and some inspiring results were reported. By using the LIR technique, Fu et al studied the thermometric properties of the core-shell structure of lanthanide-doped NaYF 4 :Yb 3+ /RE 3+ @NaYF 4 :Yb 3+ /RE 3+ @NaNdF 4 :Yb 3+ (RE 3+ = Ho 3+ or Er 3+ ), and its maximum S r value was 2.543% K −1 .…”