High-sensitivity luminescent thermometer based on Mn4+/Sm3+ dual-emission centers in double-perovskite tellurate

Thermally stable rare-earth-free double perovskite phosphors toward dual-mode optical thermometry and dual-functional lighting sources

“…Fig. 6(b) presents the fitting curves concerning the relationship between lifetime and temperature, indexed to the succeeding equation: 50 t = 1.533 exp(ÀT/373.5) À 0.02 (15) Similarly, the sensitivity parameters S A2 and S R2 of the optical thermometer based on lifetime are defined by the following formulas: 51,52 S A2 ¼ dðtÞ dT (16)…”

Deep-red-emitting phosphors of Mn4+-activated tantalite for high-sensitivity lifetime thermometry and security films

“…5(c), the high relative sensing sensitivity value (3.27% K −1 @373 K) was much better than in some previous reports, such as Ca 3 Y 2 Ge 3 O 12 :Bi 3+ /Eu 3+ (0.338% K −1 ) and SrGdLiTeO 6 :Sm 3+ /Mn 4+ (1.27% K −1 ) phosphors. 62,63 In addition, the temperature uncertainty was also a significant parameter for optical thermometry, which was estimated using eqn (16):…”

Thermochromic Upconversion Emission in Tm3+/Yb3+-Codoped La2Mo3O12 Microparticles via Negative Thermal Expansion Engineering for Ultrahigh Sensitivity Optical Thermometry

“…Notably, the temperature readout based on decay time has been also extensively investigated. According to the temperature-related decay time, some thermosensitive materials, such as SrGdLiTeO 6 :Mn 4+ /Sm 3+ , Na 2 YMg 2 (VO 4 ) 3 :Er 3+ /Yb 3+ , Lu 3 Al 5 O 12 :Ce 3+ /Mn 4+ , etc., − were developed and exhibited promising application in optical temperature sensing. Inspired by these aforementioned characteristics, the study on the thermometric performance of luminescent materials by employing FIR and decay time technologies is very interesting.…”