期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 3, 期 35, 页码 9112-9121出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5tc01577d
关键词
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资金
- National Natural Science Foundation of China [50902042]
- Funds for Distinguished Young Scientists of Hebei Province, China [A2015201129]
- Natural Science Foundation of Hebei Province, China [A2014201035, E2014201037]
- Education Office Research Foundation of Hebei Province, China [ZD2014036, QN2014085]
- Midwest Universities Comprehensive Strength Promotion Project
A series of LiBaBO3:RE (RE = Eu2+/Tb3+/Eu3+) phosphors have been synthesized using the high-temperature solid-state reaction method. The X-ray diffraction (XRD), emission spectra, excitation spectra, decay lifetimes, and diffuse reflection spectra were utilized to characterize the phosphors. The as-prepared samples have been characterized via XRD measurement and showed that Eu2+/Tb3+/Eu3+ can be efficiently doped into the host. The obtained phosphors can emit different colors of light when doping with different activators. The energy transfer from Tb3+ to Eu3+ occurs in LiBaBO3:0.03Eu(3+), yTb(3+) prepared in the air. While an abnormal reduction phenomenon was reported when Eu and Tb ions were co-doped in LiBaBO3 and prepared in an inferior reductive atmosphere, which showed tunable-color from blue to red based on energy transfer of Eu2+ -> Tb3+ -> Eu3+ ions. And the energy transfer not only can occur between Eu2+ and Tb3+ ions, but also between Tb3+ and Eu3+ ions. All these results reveal that Tb3+ can play the role of storing the energy for Eu3+, and LiBaBO3 may be a potential candidate phosphor for LEDs.
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