Temperature-dependent energy transfer in photo-sensitized luminescence of rare earth complexes

We have fabricated polymer thin films containing bis(triphenylphosphineoxide)-tris(hexafluoroacetylacetonato) terbium(III) [Tb(HFA) 3(TPPO) 2] as a thermo-sensor. The thermo-sensitivity of the thin film containing the Tb(III) complex was found to be 13.5%/°C. The emission intensity ratio normalized according to that at 0 °C observed for Tb(HFA) 3(TPPO) 2 in the thin film was not affected by pressure. The thermo-sensing thin film is expected to be useful in measuring surface-temperatures of bodies in wind-tunnel experiments.