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1. 中国计量学院 材料科学与工程学院, 浙江 杭州 310018
2. 浙江电子科技大学 材料与环境工程学院,浙江 杭州,310018
纸质出版日期:2015-10-10,
收稿日期:2015-6-26,
修回日期:2015-7-28,
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黄君, 邵智猛, 任印宝等. 一种新型蓝光BaKBP<sub>2</sub>O<sub>8</sub>:Eu<sup>2+</sup>荧光粉的合成与性能研究[J]. 发光学报, 2015,36(10): 1126-1131
HUANG Jun, SHAO Zhi-meng, REN Yin-bao etc. Synthesis and Luminescence Property of A Novel Blue-emitting BaKBP<sub>2</sub>O<sub>8</sub>:Eu<sup>2+</sup> Phosphor[J]. Chinese Journal of Luminescence, 2015,36(10): 1126-1131
黄君, 邵智猛, 任印宝等. 一种新型蓝光BaKBP<sub>2</sub>O<sub>8</sub>:Eu<sup>2+</sup>荧光粉的合成与性能研究[J]. 发光学报, 2015,36(10): 1126-1131 DOI: 10.3788/fgxb20153610.1126.
HUANG Jun, SHAO Zhi-meng, REN Yin-bao etc. Synthesis and Luminescence Property of A Novel Blue-emitting BaKBP<sub>2</sub>O<sub>8</sub>:Eu<sup>2+</sup> Phosphor[J]. Chinese Journal of Luminescence, 2015,36(10): 1126-1131 DOI: 10.3788/fgxb20153610.1126.
通过高温固相法成功合成了一种新型蓝光荧光粉BaKBP
2
O
8
:Eu
2+
分别用XRD和荧光光谱表征了其结构与光学性能。结果表明
Eu
2+
的引入并没有显著改变其四方相的晶体结构。样品的激发光谱(监测波长为443 nm)是由主晶格吸收的307 nm吸收肩与Eu
2+
离子4f
7
-4f
6
5d 跃迁的346 nm主峰组成。在紫光激发下
样品的发射光谱为蓝色。当Eu
2+
离子摩尔分数为0.03时
样品的发射强度达到最大值。然而
随着Eu
2+
浓度的进一步增加
由于浓度猝灭机制
其发射强度开始降低。在超过370 K的温度下
荧光粉样品的相对发光强度仍然超过50%。BaKBP
2
O
8
:Eu
2+
的色坐标为(0.176 6
0.168 1)。
Novel efficient blue phosphors Ba
1-
x
KBP
2
O
8
:
x
Eu
2+
were successfully synthesized by high-temperature solid state reaction. The structure and luminescence properties were characterized systematically by XRD and fluorescence spectra
respectively. The results show that Eu
2+
doping does not produce significant changes for the crystal structure which remains pure tetragonal. Excitation spectrum (monitoring wavelength is 443 nm) is composed of the acromion at 307 nm due to host absorption
and the main peak at 346 nm due to 4f
7
-4f
6
5d transition Eu
2+
ions. Under violet light excitation
the samples emit blue light. When the mole fraction of Eu
2+
is 0.03
the emission spectrum has a maximum intensity. However
with further increase of the concentration of Eu
2+
the emission spectrum intensity decreases
as a result of concentration quenching. At temperatures over 370 K
the intensity of the phosphors is still more than 50%. The CIE chromaticity coordinate of BaKBP
2
O
8
:Eu
2+
is (0.176 6
0.168 1).
荧光粉BaKBP2O8:Eu2+蓝光发射
phosphorsBaKBP2O8:Eublue-emitting
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