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多铝酸盐宽带青色荧光粉发光特性
增强出版Luminescence Characteristics of Polyaluminate Broadband Cyan Phosphor
- 发光学报 2021年42卷第9期 页码：1376-1385
- 作者机构：
新疆师范大学物理与电子工程学院 新疆矿物发光及其微结构重点实验室，新疆 乌鲁木齐 830054
- 作者简介：
[ "李婉璐(1996-)，女，新疆库尔勒人，硕士研究生，2018年于新疆师范大学获得学士学位，主要从事固体发光的研究。 E-mail: lwl13579961995@sina.com" ]
[ "戴鹏鹏(1982-)，男，重庆人，博士，教授，博士研究生导师，2012年于东北师范大学获得博士学位，主要从事无机光功能材料的结构设计及其在照明、显示、传感器中应用的基础研究。 E-mail:daipp614@nenu.edu.cn" ]
- 基金信息：国家自然科学基金(517040);自治区科技部高层次人才引进计划项目;天山人才三期;新疆师范大学教育厅重点实验室招标课题(KWFG2002)
DOI：10.37188/CJL.20210178
中图分类号： O482.31纸质出版日期：2021-09-01，
收稿日期：2021-05-07，
修回日期：2021-06-06，
扫 描 看 全 文
李婉璐, 戴鹏鹏. 多铝酸盐宽带青色荧光粉发光特性[J]. 发光学报, 2021,42(9):1376-1385.
Wan-lu LI, Peng-peng DAI. Luminescence Characteristics of Polyaluminate Broadband Cyan Phosphor[J]. Chinese Journal of Luminescence, 2021,42(9):1376-1385.
李婉璐, 戴鹏鹏. 多铝酸盐宽带青色荧光粉发光特性[J]. 发光学报, 2021,42(9):1376-1385. DOI： 10.37188/CJL.20210178.
Wan-lu LI, Peng-peng DAI. Luminescence Characteristics of Polyaluminate Broadband Cyan Phosphor[J]. Chinese Journal of Luminescence, 2021,42(9):1376-1385. DOI： 10.37188/CJL.20210178.
摘要
通过高温固相法成功合成了系列宽带发射且发光颜色可调的Ba
1-
x
Al
12
O
19
∶
x
Ce
3+
(0.01≤
x
≤0.09)荧光粉。X射线衍射、扫描电子显微镜和能量色散X射线能谱元素映射图像结果证明合成了纯相且元素分布均匀的铝酸盐荧光粉。在361 nm近紫外光激发下，随着Ce
3+
掺杂浓度逐渐增加，Ba
1-
x
Al
12
O
19
∶
x
Ce
3+
样品的发光强度逐渐增强且发光颜色由蓝光逐渐调节到青光。在
x
=0.05 mol时，Ba
0.95
Al
12
O
19
∶0.05Ce
3+
样品发光强度达到最大值，荧光内量子产率为30.8%。稳态光谱和荧光寿命结果证实， 当Ce
3+
掺杂浓度大于0.05 mol时，Ba
1-
x
Al
12
O
19
∶
x
Ce
3+
样品发生浓度猝灭，该浓度猝灭主要归因于邻近的Ce
3+
-Ce
3+
之间的能量传递。Ba
0.95
Al
12
O
19
∶0.05Ce
3+
样品表现出光谱覆盖范围为365~650 nm、主峰位于450 nm的青光发射，其半高宽为120 nm。该不对称的宽发射带主要源于占据基质晶格中Ba1和Ba2格位的两个Ce
3+
发光中心。将Ba
0.95
Al
12
O
19
∶0.05Ce
3+
和商用红色荧光粉混合制备出简单的可被紫外光(
λ
ex
=365 nm)激发的二色pc-WLEDs，并实现了显色指数和相关色温可调的全可见光谱白光。 该宽带青色发光的Ba
0.95
Al
12
O
19
∶0.05Ce
3+
荧光粉在全光谱照明领域具有潜在应用。
Abstract
In this paper
a series of broadband-emitting and tunable Ba
1-
x
Al
12
O
19
∶
x
Ce
3+
(0.01≤
x
≤0.09) phosphors were successfully synthesized by the high-temperature solid-phase method. The results of X-ray diffraction
scanning tunnel electron microscopy and EDS mapping proved that we synthesized aluminate phosphor with pure phase and uniform element distribution. Under the excitation of near-ultraviolet light wavelength of 361 nm
we found that the luminous intensity of Ba
1-
x
Al
12
O
19
∶
x
Ce
3+
samples gradually increased and the luminous color of Ba
1-
x
Al
12
O
19
∶
x
Ce
3+
samples gradually change from blue to cyan as the Ce
3+
concentration increased. When
x
=0.05 mol
the luminescence intensity of the Ba
0.95
Al
12
O
19
∶0.05Ce
3+
sample reaches the maximum
and the fluorescence internal quantum yield is 30.8%. Steady-state spectroscopy and fluorescence lifetime results confirm that when the doped Ce
3+
concentration is greater than 0.05 mol
the Ba
1-
x
Al
12
O
19
∶
x
Ce
3+
sample undergoes concentration quenching
and the concentration quenching is mainly due to the energy transfer between adjacent Ce
3+
-Ce
3+
. The Ba
0.95
Al
12
O
19
∶0.05Ce
3+
sample exhibits a cyan emission with a spectral coverage of 365-650 nm
a main peak at 450 nm
and its full width at half maximum is 120 nm. The asymmetric broad emission band mainly originates from the two Ce
3+
emission centers occupying the Ba1 and Ba2 sites in the host lattice. Simple dichromatic pc-WLEDs with UV excitation(
λ
ex
=365 nm)
full-visible-spectrum white light with adjustable color index and associated color temperature were prepared by mixing Ba
0.95
Al
12
O
19
∶0.05Ce
3+
with a commercial red phosphor. The Ba
0.95
Al
12
O
19
∶0.05Ce
3+
phosphor with broadband cyan luminescence developed in this work has potential applications in the field of full-spectrum lighting.
关键词
宽带发射青色光谱间隙Ce3+掺杂铝酸盐全光谱
Keywords
broadband emissioncyan spectral gapCe3+ dopedaluminatefull spectrum
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