文档介绍：
单一基质白光 LED 荧光粉
Ba9Sc2Si6O24:Eu2+,Mn2+的结构和发光
性能#
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边柳,王婷,杨姗姗,丁贤林,郑鹏,刘泉林**
(北京科技大学材料科学与工程学院,北京 100083)
摘要:采用高温固相反应合成了白光 LED 用荧光粉 Ba9Sc2Si6O24:Eu2+,Mn2+,并对其结构和
发光性能进行了系统研究。激发光谱,荧光寿命和低温光谱测量表明 Eu2+对 Mn2+存在能量
传递。该荧光粉在紫外光激发下,发射出 Eu2+的~460 nm 蓝光和~512 nm 绿光及 Mn2+的~615
nm 红光,通过成分调控可实现白光;因此,是一种新型的单一基质的白光用荧光粉。
关键词:材料物理化学;LED;白光;Eu 和 Mn 共掺杂
中图分类号:O7, O433
The structure and luminescence of single-phase
Ba9Sc2Si6O24:Eu2+,Mn2+ phosphors for white-light emitting
diodes
BIAN Liu, WANG Ting, YANG Shanshan, DING Xianlin, ZHENG Peng,
LIU Quanlin
(School of Materials Science & Engineering, University of Science and Technology Beijing,
Beijing 100083)
Abstract: Single-phased white light emitting phosphors Ba9Sc2Si6O24:Eu2+,Mn2+ have been
essfully prepared by solid-state reaction and the structure and luminescence of them were
analyzed. The excitation spectra, luminescent lifetime and low temperature spectra demonstrate
the energy transfer from the Eu2+ to the Mn2+. Under ultraviolet light excitation, Eu2+ emits blue
light (~460 nm) and green light (~512 nm), Mn2+ emits red light (~615 nm), and it could obtained
white light by tuning the concentration of Mn2+. Those results suggest that
Ba9Sc2Si6O24:Eu2+,Mn2+ can be a promising ponent phosphor for white emitting
pc-LEDs.
Keywords: Physical Chemistry of Materials; LED; White Light; Eu and Mn co-doped
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