Two-color thermosensors based on [Y_{1-x}Dy_x(acetylacetonate)_3(1,10-phenanthroline)] molecular crystals
作者： Benjamin R. Anderson , Ray Gunawidjaja , Hergen Eilers
DOI: 10.1007/S00340-017-6638-6
关键词: Intensity (heat transfer) 、 Crystallography 、 Materials science 、 Sensitivity (control systems) 、 Phenanthroline 、 Phosphor 、 Intensity ratio 、 Thermal quenching 、 Luminescence
摘要: We develop a two-color thermometry (TCT) phosphor based on [Y\(_{1-x}\)Dy\(_x\)(acetylacetonate)\(_3\)(1,10-phenanthroline)] ([Y\(_{1-x}\)Dy\(_x\)(acac)\(_3\)(phen)]) molecular crystals for use in heterogeneous materials. characterize the optical properties of [Y\(_{1-x}\)Dy\(_x\)(acac)\(_3\)(phen)] at different temperatures and Dy concentrations, find that emission is strongly quenched by increasing temperature concentration. also observe broad background (due to ligands) photodegrades under 355 nm illumination with photodegradation resulting decreased luminescence intensity. However, while decreasing overall intensity, not found influence integrated intensity ratio \({}^4I_{15/2} \rightarrow {}^6H_{15/2}\) \({}^4F_{9/2} transitions. This allows us compute complex. Based dependence these ratios; we calculate has maximum sensitivity 1.5% K\(^{-1}\) our TCT system minimum resolution 1.8 K. Finally, demonstrate as determining dynamic profile using from [Y\(_{1-x}\)Dy\(_x\)(acac)\(_3\)(phen)].
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