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Thermal, spectroscopic and optical sensor properties of oxyfluorotellurite glasses doped with holmium and ytterbium

•Oxyfluorotellurite glasses singly-doped and co-doped Ho3+ and Yb3+ were prepared.•Influence of dopant concentration on thermal and spectroscopic properties.•The materials under study were evaluated as luminescent temperature sensors. The paper presents a thermal and spectroscopic properties of oxyf...

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Published in:Materials research bulletin 2022-09, Vol.153, p.111909, Article 111909
Main Authors: Klimesz, Barbara, Lisiecki, Radosław, Ryba-Romanowski, Witold
Format: Article
Language:English
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Summary:•Oxyfluorotellurite glasses singly-doped and co-doped Ho3+ and Yb3+ were prepared.•Influence of dopant concentration on thermal and spectroscopic properties.•The materials under study were evaluated as luminescent temperature sensors. The paper presents a thermal and spectroscopic properties of oxyfluorotellurite glasses (65-x)TeO2–20ZnF2–12PbO–3Nb2O5–xHo2O3 (x = 0.5, 2 and 5) and (65-x-y)TeO2–20ZnF2–12PbO–3Nb2O5–xHo2O3–yYb2O3 (x = 0.5, y = 2 and x = 0.5, y = 5). The obtained data show that the thermal stability of TZPN glass samples depends on the content of rare earth elements (holmium (Ho3+) and/or ytterbium (Yb3+) ions) in the glassy matrix. It was also found that the spectroscopic characteristics of TZPN:Ho and TZPN:Ho,Yb glasses are found to be suitable as optical medium for mid infrared emission at ∼2.0 μm. The effective emission cross section was determined to be around 0.89 × 10−20 cm2 for transition 5I7 → 5I8 in TZPN:Ho glasses. However, the maximum absolute and relative sensitivities SA = 4.53 × 10−3 K−1 and SR = 0.53% K−1 at T = 675 K were established for TZPN:0.5%Ho,2%Yb. [Display omitted]
ISSN:0025-5408
1873-4227
DOI:10.1016/j.materresbull.2022.111909