Luminescent properties and energy transfer studies of color-tunable LuBO3: Ce3+/Tb3+/Eu3+ phosphors

被引：18
|
作者：
Zhang, Xinguo [1 ,3 ]
Fu, Xionghui [2 ]
Song, Jiahui [4 ]
Gong, Menglian [5 ]
机构：
[1] Southern Med Univ, Sch Pharmaceut Sci, Guangzhou 510515, Guangdong, Peoples R China
[2] Jinan Univ, Dept Chem, Guangzhou 510632, Guangdong, Peoples R China
[3] Guangxi Univ, Sch Chem & Chem Engn, Nanning 530004, Peoples R China
[4] Shenzhou High Sch, Hengshui 053800, Peoples R China
[5] Sun Yat Sen Univ, Sch Chem & Chem Engn, Guangzhou 510275, Guangdong, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2016年 / 80卷
关键词：
Optical materials; Optical properties; X-ray diffraction; Luminescence; Phosphors; PHOTOLUMINESCENCE PROPERTIES; OPTICAL-PROPERTIES; RED PHOSPHOR; EU3+; LIGHT; CE3+; TB3+; EMISSION; GREEN; NA2Y2B2O7CE3+;
D O I：
10.1016/j.materresbull.2016.03.023
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A series of LuBO3: Ce3+/Tb3+/Eu3+ phosphors were synthesized via solid state reaction. The Ce3+/Tb3+ co-doped and Ce3+/Tb3+/Eu3+ tri-doped phosphors absorb near UV light through 4f-5d transitions of Ce3+, followed by sensitized Tb3+ green and Eu3+ red emission. Decay curves investigations for samples with various Tb3+ and Eu3+ contents reveal the occurrence of Ce3+-> Tb3+-> Eu3+ energy transfer. It is found that due to relative low Tb3+-> Eu3+ energy transfer rate, a high Tb3+ content (>40%) is required for efficient Ce3+-> Tb3+-> Eu3+ energy transfer. Emission color of LuBO3: Ce3+, Tb3+, Eu3+ varies from blue through green to red with Ce3+/Tb3+/Eu3+ ratio. The quantum efficiency of LuBO3: Ce3+, Tb3+ green phosphor and LuBO3: Ce3+, Tb3+, Eu3+ red phosphor is 50% and 30%, respectively. Green and red LED prototypes were fabricated. The results show that the obtained phosphors are potential candidates as down-converted phosphors for NUV LEDs. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：177 / 185
页数：9
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