Highly sensitive Tm3+/Yb3+ codoped SrWO4 for optical thermometry

Al2O3 co-doped with Cr3+ and Mn4+, a dual-emitter probe for multimodal non-contact luminescence thermometry

“…A further performance enhancement of luminescence probes can be achieved by using a pair of emitters. 33 Combinations of different rare earth ions [34][35][36][37] as well as pairing rare-earth with transition metal ions [38][39][40][41][42] have been explored extensively and it has been shown that having two emitters in the same crystal enables a sensitivity enhancement and permits operation of the sensor over an extended temperature range. It is therefore important to assess this enhancement that a material with dual-emitters, multimodal sensor of temperature can bring, the topic of this feasibility study.…”

Full color white light, temperature self‐monitor, and thermochromatic effect of Cu+ and Tm3+ codoped germanate glasses

“…However, from Figure 9B, it can be seen that the FIR starts to deviate from the linear relationship when the sample temperature exceeds 450 K, indicating that the highest temperature of Cu + /Tm 3+ co‐doped glass phosphor can be sensed is 450 K. In addition, the sensitivity ( S ) is a key parameter for the practical application in optical temperature sensing, and the S can be defined as . On the basis of linear equation , the value of sensitivity S is equal to b , viz, 0.00758 K −1 , which is higher than the maximum sensitivities of Er 3+ ‐doped LuNbO 4 phosphor (0.0058 K −1 ) 47 and Tm 3+ /Yb 3+ co‐doped SrWO 4 phosphor (0.0062 K −1 ) 48 derived based on the thermally coupled levels 49‐52 . Except for the high sensitivity, the present temperature sensing also exhibits another advantage, namely, the constant sensitivity, which is different from the temperature sensing based on the thermally coupled levels.…”

Room Temperature Synthesis of Various Color Emission Rare-Earth Doped Strontium Tungstate Phosphors Applicable to Fingerprint Identification

“…Several types of phosphors have been reported, such as up-conversion pre-conversion phosphors co-doped with Yb 3+ and Er 3+ and red phosphors co-doped with Eu 3+ and Sm 3+ . A phosphor was synthesized, and a yellow-emitting phosphor was synthesized by co-doping with Tb 3+ and Eu 3+ ions to produce various light-emitting materials as in the previously reported research [33][34][35][36][37]. Table 1 shows a reported phosphor synthesized by adding various rare earth ions, with tungsten oxide as a host.…”