White-emitting phosphor Ba2 B2 O5 :Ce3+ , Tb3+ , Sm3+ : Luminescence, energy transfer, and thermal stability
| Autor: | Qiongyu Bai, Jiang Sun, Panlai Li, Zhiping Yang, Zhijun Wang, Shuchao Xu, Ting Li |
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| Rok vydání: | 2017 |
| Předmět: |
Diffraction
Materials science Energy transfer Analytical chemistry Potential candidate Phosphor 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences Photon upconversion 0104 chemical sciences Ion Materials Chemistry Ceramics and Composites Thermal stability 0210 nano-technology Luminescence |
| Zdroj: | Journal of the American Ceramic Society. 100:2069-2080 |
| ISSN: | 0002-7820 |
| DOI: | 10.1111/jace.14766 |
| Popis: | A series of Ba2B2O5: RE (RE=Ce3+/Tb3+/Sm3+) phosphors were synthesized using high-temperature solid-state reaction. The X-ray diffraction (XRD), luminescent properties, and decay lifetimes are utilized to characterize the properties of the phosphors. The obtained phosphors can emit blue, green, and orange-red light when single-doped Ce3+, Tb3+, and Sm3+. The energy can transfer from Ce3+ to Tb3+ and Tb3+ to Sm3+ in Ba2B2O5, but not from Ce3+ to Sm3+ in Ce3+ and Sm3+ codoped in Ba2B2O5. However, the energy can transfer from Ce3+ to Sm3+ through the bridge role of Tb3+. We obtain white emission based on energy transfer of Ce3+→Tb3+→Sm3+ ions. These results reveal that Ce3+/Tb3+/Sm3+ can interact with each other in Ba2B2O5, and Ba2B2O5 may be a potential candidate host for white-light-emitting phosphors. |
| Databáze: | OpenAIRE |
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