Fig. 9From: Boltzmann- and Non-Boltzmann-Based Thermometers in the First, Second and Third Biological Windows for the SrF2:Yb3+, Ho3+ Nanocrystals Under 980, 940 and 915 nm ExcitationsThe repeatability of FIR (I1186/I1012 and I1950/I2020) in SrF2:Yb3+/Ho3+ (12/0.1 mol%) NCs over an arbitrary heating and cooling circle under 980, 940 and 915 nm excitationsBack to article page