Single-phase white-emitting phosphors Ba3Ce(1−x−y)(PO4)3:xTb3+,yMn2+ and Ba3Ce(1−x−z)(PO4)3:xTb3+,zSm3+: structure, luminescence, energy transfer and thermal stability
| Autor: | Shuchao Xu, Zhiping Yang, Qiongyu Bai, Zhijun Wang, Jiang Sun, Panlai Li, Ting Li |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Diffraction
Chemistry business.industry General Chemical Engineering Energy transfer Cyan Analytical chemistry Phosphor 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Optoelectronics Quantum efficiency Thermal stability Single phase 0210 nano-technology Luminescence business |
| Zdroj: | RSC Advances. 7:19584-19592 |
| ISSN: | 2046-2069 |
| DOI: | 10.1039/c7ra01766a |
| Popis: | A series of Ba3Ce(1−x−y)(PO4)3:xTb3+,yMn2+ and Ba3Ce(1−x−z)(PO4)3:xTb3+,zSm3+ phosphors were synthesized by a high temperature solid-state reaction. X-ray diffraction, luminescence and decay curves were used to characterize the phosphors. All the synthesized phosphors crystallized in the cubic unit cell with I3d space group. Energy can be transferred from Ce3+ to Tb3+/Mn2+/Sm3+ in Ba3Ce(1−x)(PO4)3:xTb3+, Ba3Ce(1−y)(PO4)3:yMn2+, and Ba3Ce(1−z)(PO4)3:zSm3+ phosphors. Furthermore, the color of these phosphors can turn from cyan to green, blue to red, and cyan to pale pink. When Ba3Ce(PO4)3 was co-doped with Tb3+ and Mn2+/Sm3+, Tb3+ could also transfer part of its energy to Mn2+/Sm3+, and more importantly, a white emission can be achieved based on this energy transfer. The phosphors exhibited a good thermal stability, with correlated color temperatures of up to 3301 K, and a quantum efficiency as high as 51.2%. These results revealed that we managed to obtain good white emitting phosphors by co-doping Ba3Ce(PO4)3 with Tb3+ and Mn2+/Sm3+. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|