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Crystal Site Engineering in Sr2LiSiO4F Enabling Mixed-valent Europium Toward Ratiometric Temperature Sensing
增强出版- Chinese Journal of Luminescence Vol. 42, Issue 12, Pages: 1829-1836(2021)
- 作者机构：
1.山东大学材料科学与工程学院 材料液固结构演变与加工教育部重点实验室，山东 济南 250061
2.南昌大学 材料科学与工程学院，江西 南昌 330031
- 作者简介：
- 基金信息：National Natural Science Foundation of China(51672265);Natural Science Foundation of Shandong Province(ZR2018JL016);Qilu Young Scholar Program of Shandong University
DOI：10.37188/CJL.20210299
CLC： O482.31Received：13 September 2021，
Revised：30 September 2021，
Published：2021-12
- 稿件说明：
移动端阅览
Shuai HUANG, Jin-di WANG, Yu YAN, et al. Crystal Site Engineering in Sr2LiSiO4F Enabling Mixed-valent Europium Toward Ratiometric Temperature Sensing[J]. Chinese journal of luminescence, 2021, 42(12): 1829-1836.
Shuai HUANG, Jin-di WANG, Yu YAN, et al. Crystal Site Engineering in Sr2LiSiO4F Enabling Mixed-valent Europium Toward Ratiometric Temperature Sensing[J]. Chinese journal of luminescence, 2021, 42(12): 1829-1836. DOI： 10.37188/CJL.20210299.
摘要
通过高温固相法制备了一系列Eu掺杂的Sr
1.95+
x
Li
1-
x
Si
1-
x
Al
x
O
4
F(0≤
x
≤0.25)发光材料，并详细研究了所制备Sr
2
LiSiO
4
F化合物的晶体结构及相组成。利用Al
3+
-Sr
2+
离子对取代Si
4+
-Li
+
离子对的晶体位点工程，对Eu
2+
占据的Sr多面体位点进行调控，实现单相Sr
1.95+
x
Li
1-
x
Si
1-x
Al
x
O
4
F(0≤
x
≤0.25)材料中Eu
2+
和Eu
3+
的共存，获得了Sr
1.95+
x
Li
1-
x
Si
1-
x
Al
x
O
4
F∶Eu体系从绿光到红光的发光调谐。 通过对Sr
1.95+
x
Li
1-
x
Si
1-
x
-Al
x
O
4
F∶Eu材料中的Eu
2+
和Eu
3+
离子在25~300 ℃范围内温度依赖性光谱的研究发现Eu
2+
和Eu
3+
呈现不同的温度敏感特性。经计算，Sr
1.95+
x
Li
1-
x
Si
1-
x
Al
x
O
4
F∶0.05Eu发光材料的温度传感绝对灵敏度和相对灵敏度可分别达到2.83%·K
-1
与0.66%·K
-1
，进一步证实了所制备发光材料在温度传感方面的应用潜力。
Abstract
Eu-doped Sr
1.95+
x
Li
1-
x
Si
1-
x
Al
x
O
4
F(0≤
x
≤0.25) phosphors were prepared by solid-state method. The Sr polyhedron sites occupied by Eu
2+
in the Sr
2
LiSiO
4
F matrix lattice were adjusted
via
crystal site engineering method which is implemented by replacing Si
4+
-Li
+
with Al
3+
-Sr
2+
ion pairs. The co-existence of Eu
2+
and Eu
3+
in single-phase Sr
1.95+
x
Li
1-
x
Si
1-
x
Al
x
O
4
F∶0.05Eu(0≤
x
≤ 0.25) phosphors was achieved
and the luminescence was tuned from green to red light. The temperature-dependent spectra(25-300 ℃) of Eu
2+
and Eu
3+
ions in Sr
1.95+
x
Li
1-
x
Si
1-
x
-Al
x
O
4
F∶0.05Eu were studied. It was found that Eu
2+
and Eu
3+
have different temperature sensitivities. The absolute sensitivity and relative sensitivity of temperature sensing of the Sr
1.95+
x
Li
1-
x
Si
1-
x
-Al
x
O
4
F∶0.05Eu phosphor reach 2.83%·K
-1
and 0.66%·K
-1
respectively
which further confirms the application potential of the prepared phosphors in temperature sensing.
关键词
Keywords
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