Influence of F− on the reduction process of Eu3+ to Eu2+ and optical properties of Eu3+/Eu2+–Er3+–Yb3+ co-doped niobate silicate glasses
In this paper, we report the influences of F− ions on the reduction process of Eu3+ to Eu2+, and the optical properties of Eu3+/Eu2+–Er3+–Yb3+ co-doped niobate silicate glasses. The visible (VIS), upconversion (UC) emissions, and energy transfer (ET) of Eu3+/Eu2+–Er3+–Yb3+ co-doped niobate silicate...
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| Những tác giả chính: | , , , , , |
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| Định dạng: | Journal article |
| Ngôn ngữ: | English |
| Được phát hành: |
North-Holland
2022
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| Những chủ đề: | |
| Truy cập trực tuyến: | http://scholar.dlu.edu.vn/handle/123456789/1195 https://doi.org/10.1016/j.jnoncrysol.2022.121417 |
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| Thư viện lưu trữ: | Thư viện Trường Đại học Đà Lạt |
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| Tóm tắt: | In this paper, we report the influences of F− ions on the reduction process of Eu3+ to Eu2+, and the optical properties of Eu3+/Eu2+–Er3+–Yb3+ co-doped niobate silicate glasses. The visible (VIS), upconversion (UC) emissions, and energy transfer (ET) of Eu3+/Eu2+–Er3+–Yb3+ co-doped niobate silicate glasses under the excitations of 295, 335 nm, and 980 nm laser diode (LD) were investigated. The direct/indirect optical bandgaps and CIE 1931 (x; y) chromaticity coordinates for luminescence of Eu3+/Eu2+–Er3+–Yb3+ co-doped niobate silicate glasses under the excitations of 295, 335 nm were also been calculated and identified. Remarkably, the influences of F− ions and experimental conditions platinum crucibles with the lid on enhancing the reduction process of Eu3+ to Eu2+were also investigated and discussed. |
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