| Autor: |
Cantürk, Selim Burak, Tabanli, Sevcan, Örücü, Hümeyra, Genç, Seval, Erdem, Murat, Eryürek, Gönül |
| Zdroj: |
ECS Journal of Solid State Science and Technology; July 2023, Vol. 12 Issue: 7 p076012-076012, 1p |
| Abstrakt: |
A series of compounds with the general formula (La1−xREx)2Ti2O7(x = 0.005, 0.015, and 0.025) doped with Yb3+, Er3+, and Tm3+rare Earth ions were prepared by the traditional solid-state reaction at 1350 °C for 24 h. The X-ray powder diffraction technique, high-resolution transmission electron microscopy, and photoluminescence spectroscopy technique were used to characterize the structure and optical properties of the compounds. All compounds showed a single-phase orthorhombic structure with a space group Pna21,asconfirmed by JCPDS (Cart No: 01-070-1690). The La1.9Yb0.04Er0.01Tm0.05Ti2O7nanocrystals exhibited intense tunable white light luminescence signals in the full spectrum, and green and blue emissions were predominant in the Yb3+/Er3+−and Yb3+/Tm3+-doped titanates, respectively. In this study, the influence of concentration and excitation power on the upconversion luminescence, color, and calculated laser-power-induced heating performance of La2Ti2O7nanophosphors were investigated at room temperature. |
| Databáze: |
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