| Autor: |
Xia, Siyu, Guan, Anxiang, Gao, Fangfang, Fu, Anjie, Xu, Yonghui, Meng, Yingbin, Zhou, Liya |
| Předmět: |
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| Zdroj: |
Journal of Materials Science: Materials in Electronics; Aug2017, Vol. 28 Issue 16, p11856-11860, 5p |
| Abstrakt: |
A series of Eu-doped KBaY(BO) phosphors was synthesized through a conventional solid-state reaction method. X-ray power diffraction and photoluminescence spectra were used to characterize the phosphors. The KBaY(BO):Eu phosphor showed an intense orange-red emission at 591 nm and red emission at 610 nm under near-UV (392 nm) and blue-light (463 nm) excitation. These results suggest that KBaY(BO):Eu phosphors are suitable for near-UV or blue-light excitation. Compared with Eu single-doped samples, Eu and Bi co-doped samples possess a peak value of 310 nm, which implies the energy transfer between Bi and Eu. Moreover, the energy-transfer mechanism between Eu and Bi in KBaY(BO) was explored, and the mechanism was found to be a dipole-quadrupole interaction. The emission peak intensities of the KBaY(BO):Eu phosphor at 591 and 610 nm are significantly enhanced with the co-activator Bi ion. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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