Photoluminescence origin and non-contact thermometric properties in Pb2+-activated CaZrO3 perovskite phosphor

Augmenting cyan emission in vanadate garnets via Dy3+activation for light emitting devices and multi-mode optical thermometry

“…The maximum S r obtained is comparable to the recent reports based on the fluorescence intensity method. 22–24…”

“…The maximum S r obtained is comparable to the recent reports based on the fluorescence intensity method. [22][23][24] 3.7.2 FIR mode. Furthermore, temperature sensing properties are evaluated based on the fluorescence intensity ratio (FIR) method, where the variation in the intensity ratios of dual emission centers considered.…”

Na2GdMg2V3O12:Sm3+ phosphors for three‐mode optical temperature sensing

“…Thermometric performance of FI mode can be evaluated by absolute sensitivity ( S A ) and S R , 34 $$$$\begin{equation}{S_A}(Func) = \left| {\frac{{d(Func)}}{{dT}}} \right|\end{equation}$$$$ $$$$\begin{equation}{S_R}(Func) = \left| {\frac{{{S_A}}}{{Func}}} \right|,\end{equation}$$$$where Func denotes physical quantity of different modes ( FI , FIR and CIE coordinate in formula , 5, and 7, respectively). Calculated curves (Figure 5(C)) show that S Rmax‐ FI (maximum S R of FI mode) is as high as 2.21 %K −1 when temperature is 362 K. High S Rmax‐ FI is comparable to most thermometers relied on FI mode 11,35,36 . Notably, S R‐ FI values are higher than 1.36 %K −1 even when temperature increases to 513 K. It demonstrates that FI mode of NGMVO: x Sm 3+ can remain high accuracy even at 513 K. Temperature resolution ( δT ) represents minimum detectable temperature difference, and it can be computed by, 4 $$$$\begin{equation}\delta T = \frac{1}{{{S_R}(Func)}}\frac{{\delta \Delta }}{\Delta },\end{equation}$$$$where δΔ / Δ is relative uncertainty of FS5 instrument.…”

“…Calculated curves (Figure 5(C)) show that S Rmax-FI (maximum S R of FI mode) is as high as 2.21 %K −1 when temperature is 362 K. High S Rmax-FI is comparable to most thermometers relied on FI mode. 11,35,36 Notably, S R-FI values are higher than 1.36 %K −1 even when temperature increases to 513 K. It demonstrates that FI mode of NGMVO:xSm 3+ can remain high accuracy even at 513 K. Temperature resolution (δT) represents minimum detectable temperature difference, and it can be computed by, 4…”

Crystal structure dependence of the microstructure and microwave dielectric properties of (SrxCa1−x)(Zr0.95Ti0.05)O3 (0 ≤ x ≤ 1) perovskite ceramics

“…CaZrO 3 , SrZrO 3 , BaZrO 3 , etc. ) have been widely investigated in many fields such as matrix materials 16 and thermal barrier coating. 17 Due to the low dielectric loss, simple preparation process, and low raw material price of CaZrO 3 ( ε r = 30, Q × f = 26 400 GHz, and τ f = −27 ppm °C −1 ) and SrZrO 3 ( ε r = 30, Q × f = 13 600 GHz, and τ f = −60 ppm °C −1 ), 18 investigators began to explore their application in the microwave dielectric ceramics field.…”