Investigation of the optical temperature sensing properties of up-converting TeO2-ZnO-BaO activated with Yb3+/Tm3+ glasses

• Published in: Sensors and actuators. A. Physical. Vol. 322; p. 112645
• Main Authors: Doğan, Anıl, Erdem, Murat
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 01-05-2021; Elsevier BV
• Subjects: Barium oxides; Color parameter; Energy transfer; Luminescence; Mechanical properties; Optical properties; Optical thermometry; Remote sensing; Remote sensors; Sensors; Studies; Tellurium dioxide; Thulium; Up converting; Ytterbium; Zinc oxide; Zinc oxides; Optical thermometry; Color parameter; Up converting; Energy transfer
• ISSN: 0924-4247; 1873-3069
• DOI: 10.1016/j.sna.2021.112645

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•Thermally compatible energy level (3F4 and 3H4) pairs at energy ranging ΔEM which is about 942.10 cm−1.•The color coordinates (x,y) is of (0.23;0.14), at excitation power of 320 mW with 40 (CRI) and 3270 K (CCT).•Preferable candidate for remote sensing of temperature with the maximum absolute senstivity of 0.0245 K−1 at 553 K.
Three different tellurite-zinc-barium-based glasses including Yb3+ and Tm3+ ions were fabricated by the conventional melt quenching method. The composition of the glasses are (76-x)% TeO2 + 16 % ZnO + 5% BaO + x Tm2O3 + 3% Yb2O3, where x values are 0.075 mol %, 0.15 mol % and 0.3 mol % for Tm3+, respectively. Spectral properties of the powders were detailed to sort out for possible up-conversion (UC) emission mechanism in the range between 400−1700 nm under the wavelength of 975 nm excitation. The optical thermometry properties of the Yb3+/Tm3+: TZB glasses indicated that 3F4 and 3H4 levels of the Tm 3+ ions have thermally compatible energy pairs at energy ranging ΔEM which is about 942.1 cm−1 with the maximum absolute sensitivity of 0.0245 K−1 at 553 K. With these properties, Yb3+/Tm3+: TZB glasses could be a promising candidate for remote temperature sensing in sensor technology.