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YBO_3:2 at.% Eu~(3+) was prepared by the solid state reaction and its temperature dependent luminescence was investigated for possible applications in temperature sensing. Phase composition of this material was confirmed by X-ray powder diffraction analysis and excitation and emission spectra were also provided. Under excitation of 355 nm, the fluorescence originating from ~5D_0 and ~5D_1 states varied as the temperature rose in a region from 333 to 773 K. The fluorescence intensity ratio(FIR) of ~5D_0 and ~5D_1 was investigated which increased significantly with the rise of temperature. The maximal relative sensitivity in the whole temperature range was 1.8% K~(–1)(at 333 K). The results recommended YBO_3:Eu~(3+) as a new material of the FIR method for non-contact optical thermometry.
YBO_3: 2 at.% Eu ~ (3+) was prepared by the solid state reaction and its temperature dependent luminescence was investigated for possible applications in temperature sensing. Phase composition of this material was confirmed by X-ray powder diffraction analysis and excitation and emission spectra were also provided. Under excitation of 355 nm, the fluorescence originating from ~ 5D_0 and ~ 5D_1 states varied as the temperature rose in a region from 333 to 773 K. The fluorescence intensity ratios (FIR) of ~5D_0 and ~ 5D_1 was The most critical relative sensitivity in the whole temperature range was 1.8% K -1 (at 333 K). The results recommended YBO_3: Eu ~ (3+) as a new material of the FIR method for non-contact optical thermometry.