Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 7, Issue 36, Pages 11227-11233Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9tc03729b
Keywords
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Funding
- National Natural Science Foundation of China [51672085]
- Guangdong Natural Science Foundation [2018B030308009]
- Program for Innovative Research Team in the University of Ministry of Education of China [IRT_17R38]
- Joint Fund of Ministry of Education of China, Program for Jiangmen Innovative Research Team [[2017] 385]
- Local Innovative Research Team Project of Pearl River Talent Plan'' [2017BT01X137]
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In this work, a series of novel non-rare-earth ion activated phosphors Ba2Y5-xB5O17:xBi(3+) for white light-emitting diodes (WLEDs) was prepared via the high temperature solid state reaction route. The Ba2Y5-xB5O17:xBi(3+) phosphors show a tunable emission range from blue to green upon different excitation wavelengths, arising from the intricate energy transfer among multi Bi3+ emission centers. Among them, when used as a blue-emitting phosphor, Ba2Y5B5O17:Bi3+ has efficient absorption in the range of 360-390 nm, which matches well with the near ultraviolet (NUV) light emitting diode (LED) chips. Furthermore, Ba2Y5B5O17:Bi3+ phosphor exhibits good resistance to thermal degradation with a quantum efficiency (QE) of 46% under 370 nm excitation. All results indicate that the Ba2Y5B5O17:Bi3+ phosphor has potential application in WLEDs.
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