Temperature sensing properties of self-crystalized Ba2LaF7: Tb3+ glass ceramics

Cr3+-Doped InTaO4 phosphor for multi-mode temperature sensing with high sensitivity in a physiological temperature range

“…Generally speaking, all the temperature-dependent optical signals such as the absolute fluorescence intensity, fluorescence intensity ratio (FIR), and fluorescence lifetime can be utilized for temperature sensing. [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] Here, the optical thermometer materials can be classified according to the number of emission centers, including a single emission center and dual emission centers. 20 Among the optical thermometers based on the single emission center, the temperature sensing method based on the thermally coupled energy levels of trivalent rareearth (Re 3+ ) ions is the most studied and applied.…”

High‐Resolution X‐Ray Time‐Lapse Imaging from Fluoride Nanocrystals Embedded in Glass Matrix

“…In addition, the Tb 3+ photoactive centers are provided a low phonon energy crystal field environment by Ba 2 LaF 7 , which greatly enhances its luminescence intensity. [29,30,32] Herein, the mechanism for the observed optical output is proposed in Figure 3g. X-ray photons are absorbed by heavy elements such as Tb and La in the host, which allows more effective photoelectric ionization to occur.…”

Preparation, optical, and thermal stability of Tb3+‐doped glass ceramics containing Al4Ti2SiO12

“…Simultaneously, the potential applications of glass ceramics utilizing (Fluorescence intensity ratio) FIR technology are studied through the relationship between the emission intensity and temperature of glass ceramics at 298 K-418 K. In Figure 12(A), the 7 F 6 and 7 F 5 energy levels of Tb 3+ can be thermally coupled at low temperature and follow the Boltzmann distribution. 22 As shown in Figure 14(A), the decrease of the 5 D 4 → 7 F 5 (545 nm) emission peak intensity of Tb 3+ is significantly larger than that of the 5 D 4 → 7 F 6 (483 nm) emission peak intensity as temperature rises. Formula (6) expresses the relationship between the FIR of the two emission peaks and the temperature, 298 K, the maximum value of S a is 2.27×10 −2 K −1 at 418 K. Simultaneously, Table 1 presents a comparison of the sensitivity parameters of the glass ceramics prepared in this work and the previously reported temperature measurement materials, revealing that the glass ceramics prepared in this work have better sensitivity and are hold promise as excellent temperature measurement materials.…”