摘要:
We obtained a single phase BLS:Eu2+, Ce3+, Mn2+ phosphor by solid-state reactions. Eu2+, Ce3+, and Mn2+ gives rise to the blue, green, and red emission, respectively. The Mn2+ red emission can be effectively enhanced via energy transfers from both Eu2+ and Ce3+. Thus a tunable full color emission from 410 to 750 nm was realized in this single phosphor. The Eu2+ ! Mn2+ energy transfer mechanism was investigated by the fluorescence decay curves. This single phosphor exhibits an efficient excitation band covering from 390 to 410 nm, which matches well with the emission light of the efficient NUV chips. The optimized BLS:Eu2+, Ce3+, Mn2+ phosphor shows a high quantum efficient of $62% and a good color stability. When this single phosphor was combined with a 395 nm NUV-chip, an ideal white LED with a high color render index (CRI) of 85 and a correlated color temperature (CCT) of 6300 K was obtained. This demonstrates the promising application of the BLS:Eu2+, Ce3+, Mn2+ single phosphor for the NUV-based white LEDs.
-
期刊:
MATERIALS RESEARCH BULLETIN
-
分类:
物理学
>>
普通物理:统计和量子力学,量子信息等
-
引用:
ChinaXiv:201705.00438
(或此版本
ChinaXiv:201705.00438V1)
DOI:10.12074/201705.00438V1
CSTR:32003.36.ChinaXiv.201705.00438.V1
- 推荐引用方式:
Zhang, CH [Zhang, Changhua][ 1,2 ],Liu, YF [Liu, Yongfu][ 2 ],Zhang, JH [Zhang, Jiahua][ 3 ],Zhang, X [Zhang, Xia][ 3 ],Zhang, JX [Zhang, Jianxin][ 2,4 ],Cheng, ZX [Cheng, Zhixuan][ 1 ],Jiang, J [Jiang, Jun][ 2 ],Jiang, HC [Jiang, Haochuan][ 2 ].(2017).A single-phase Ba9Lu2Si6O24:Eu2+, Ce3+, Mn2+ phosphor with tunable full-color emission for NUV-based white LED applications.中国科学院科技论文预发布平台.[ChinaXiv:201705.00438]
(点此复制)