Judd-Ofelt modelling of the dual-excited single band ratiometric luminescence thermometry

Supersensitive Sm2+‐Activated Al2O3 Thermometric Coatings for High‐Resolution Multiple Temperature Read‐Outs from Luminescence

“…It shows a broad excitation band from the 7 F J →4f5d electronic transitions (note that the excitation of Sm 2+ starts from levels with J ≥ 0, as demonstrated by its isoelectronic ion Eu 3+ ). [ 35 ] It is evident that Sm 2+ can be excited by any wavelength in the 250–550 nm UV–visible range. The PL emission spectra (measured under λ ex = 473 nm radiation) over the 525–850 nm spectral and 298–648 K temperature ranges are shown in Figure 2b.…”

Luminescence Intensity Ratio Thermometry with Er3+: Performance Overview

“…The thermographic phosphor probe can be incorporated within the measured object or on its surface, on macroscale to nanoscale sizes, or can be mounted on the surface of the fiber-optic cables and bring to proximity of measuring objects. Luminescent thermometry has found a range of valuable applications, from engineering to biomedical [5], and, currently, it is a widely researched topic with an exponentially increasing number of published research papers [6].…”

“…Our previous research has demonstrated that LIR and figures of merit of luminescence thermometry can be predicted by a theoretical model that involves the famous Judd-Ofelt (JO) theory with the high matching to experimental data [6,8]. JO theory explains and predicts the intensities of the trivalent rare-earth ions' (RE 3+ ) f-f electronic transitions, and its parameters include all phenomenological mechanisms responsible for the line strengths observed in both absorption and emission spectra.…”

Single‐Band Ratiometric Luminescent Thermometry Using Pr3+ Ions Emitting in Yellow and Red Spectral Ranges

“…[1][2][3][4][5][6][7] One of the new approaches in luminescent thermometry that has recently been given a particular attention is a single-band ratiometric (SBR), which exploits a single optically active center excited in two different ways, resulting in emission signals, the intensity of which have opposite temperature dependences. [8][9][10][11][12][13][14][15][16][17][18][19][20] The SBR luminescence thermometry has many advantages, including the fact that the emission is collected just in one chosen spectral range. This enables to avoid the detrimental effects of selective absorption of a tested medium, that may modify the shape of the emission spectrum, and thus the reliability of the temperature readout.…”

“…Up to date, SBR thermometry based on the emission of several ions has been demonstrated, with most of the work focusing on lanthanides (Tb 3þ , Eu 3þ , or Nd 3þ) . [8][9][10][11][12][15][16][17][18][19]21] Due to the well-defined and complex energy-level scheme, this type of ions can be successfully used to carry out a temperature reading in the SBR approach, using an excitations matched to the ground-(GSA) and the excited-state absorption (ESA). Most of the up-to-date reported SBR luminescent thermometers concern the near infrared (NIR) (Nd 3þ ) [18,19] or greenemitting phosphors (Tb 3þ ), [9,10,12,17,21] while only a few reports present luminescent thermometers operating in the red and yellow spectral ranges.…”