Advanced temperature sensing with Er³⁺/Yb³⁺ co-doped Ba₂GdV₃O₁₁ phosphors through upconversion luminescence

Abstract

Optical thermometry is a non-contact temperature sensing technique with widespread applications. It offers precise measurements without physical contact, making it ideal for situations where contact-based methods are impractical. However, improving...

Multifunctional Optical Sensing with Lanthanide-Doped Upconverting Nanomaterials: Improving Detection Performance of Temperature and Pressure in the Visible and NIR Ranges

“…It is evident that the computed LIR values shown in Figure a conform the Boltzmann-type distribution well; the computed values of A and Δ E / k B are 19.02 and 940.25, respectively. Thus, the fitted energy gap Δ E could be deduced to be equal to 653.47 cm –1 , which is consistent with previous studies. , …”

“…Thus, the fitted energy gap ΔE could be deduced to be equal to 653.47 cm −1 , which is consistent with previous studies. 48,49 The calculated LIR value from 298 to 356.14 K is shown in Figure 5a,b. The LIR data are nicely fitted, with a fitting degree of 0.998, and are expressed as the function shown below.…”