Composite ZnO-Yb2O3-Er2O3 transparent ceramics: structure and spectral-luminescent properties

Olga Dymshits; Elena Gorokhova; Liza Basyrova; Ivan Venevtsev; Irina Alekseeva; Alexander Khubetsov; Sergey Eron’ko; Eugenia Oreschenko; Alexander Zhilin; Pavel Loiko

doi:10.1117/12.2624426

25 May 2022 Composite ZnO-Yb₂O₃-Er₂O₃ transparent ceramics: structure and spectral-luminescent properties

Olga Dymshits, Elena Gorokhova, Liza Basyrova, Ivan Venevtsev, Irina Alekseeva, Alexander Khubetsov, Sergey Eron’ko, Eugenia Oreschenko, Alexander Zhilin, Pavel Loiko

Author Affiliations +

Proceedings Volume 12142, Fiber Lasers and Glass Photonics: Materials through Applications III; 121421F (2022) https://doi.org/10.1117/12.2624426
Event: SPIE Photonics Europe, 2022, Strasbourg, France

Conference Poster

Abstract

We report on the structure and spectral-luminescent properties of a composite ZnO-Er₂O₃-Yb₂O₃ optical ceramic. The ZnO ceramic codoped with 1 wt% Er³⁺ and 4 wt% Yb³⁺ was prepared by uniaxial hot pressing of oxide powders at 1180 °C in vacuum. The maximum total transmittance of the ceramic is ~40%. The ceramic is a composite material comprised of hexagonal ZnO microcrystals (mean size: 10-15 μm, a = 3.251 Å and c = 5.201 Å) and cubic sesquioxide Er₂O₃ and Yb2O3 nanocrystals (mean size: ~130 nm, a = 10.450 Å and 10.555 Å, respectively). Its texture is dominated by the ZnO prism planes (100). The absorption spectrum of the ceramic demonstrates bands characteristic of Er³⁺ and Yb³⁺ ions in the Er₂O₃ and Yb₂O₃ crystals, respectively. The ceramic exhibits intense red upconversion luminescence. The X-ray induced luminescence spectrum contains two intense emission bands. The more intense one with a maximum at ~390 nm is due to the near-band-edge transitions and its decay time is ~1 ns. The broad band in the green represents defect emission. Its decay deviates from the single-exponential law revealing several characteristic times of ~6, 60 and 250 ns. The free carrier concentration of the composite ceramic is ~7.65×10¹⁸cm^-3, which is significantly higher than that for the undoped ZnO one.

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Olga Dymshits, Elena Gorokhova, Liza Basyrova, Ivan Venevtsev, Irina Alekseeva, Alexander Khubetsov, Sergey Eron’ko, Eugenia Oreschenko, Alexander Zhilin, and Pavel Loiko "Composite ZnO-Yb₂O₃-Er₂O₃ transparent ceramics: structure and spectral-luminescent properties", Proc. SPIE 12142, Fiber Lasers and Glass Photonics: Materials through Applications III, 121421F (25 May 2022); https://doi.org/10.1117/12.2624426

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