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Thermal characterization of europium thenoyltrifluoroacetonate for its use in formation of thermal images

We characterize the fluorescence of Europium Thenoyltrifluoroacetonate (EuTTA) with respect to temperature for its use in formation of thermal images. Current applications of EuTTA are for the measurement of temperature distribution of systems in contact with it. With this work we extend its applications to include measuring temperature changes due to thermal irradiation. We characterize the EuTTA's fluorescence obtaining a sensitivity of 2.2 % K-1 at 300 K. Minimum resolvable temperature difference ΔTmin for layout is 0.09 K, at same temperature, in our laboratory. We deposit a thin film of the material over an aluminum sheet and use a laser to generate heat over its surface. The EuTTA's fluorescence response to the incident heat is measured with a fiber optic spectrometer. We compare the measured thermal response to heat transfer model of our device. Measured thermal response to constant heat irradiation is 1.86 K. Thermal responses to heat pulses with duration of 1 and 5 seconds are 0.2 K and 0.78 K, correspondingly. We measure the variation of fluorescence due to constant heat input, and to heat pulses of duration of 1 and 5 seconds.