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1.厦门理工学院 光电与通信工程学院, 福建 厦门 361024
2.厦门理工学院 福建省光电技术与器件重点实验室, 福建 厦门 361024
[ "杨伟斌(1997-),男,福建长泰人,硕士研究生,2019年于厦门理工学院获得学士学位,主要从事稀土发光材料的研究。E-mail: 543644717@qq.com" ]
[ "熊飞兵(1976-),男,江西丰城人,博士,教授,2007年于中国科学院福建物质结构研究所获得博士学位,主要从事稀土发光材料的研究。E-mail: fbxiong@xmut.edu.cn" ]
纸质出版日期:2022-06-05,
收稿日期:2022-03-03,
修回日期:2022-03-20,
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杨伟斌,熊飞兵,杨寅等.低热猝灭新型Sr3Ga2Ge4O14∶Sm3+橙红色荧光粉[J].发光学报,2022,43(06):879-890.
YANG Wei-bin,XIONG Fei-bing,YANG Yin,et al.Novel Orange-red-emitting Sr3Ga2Ge4O14∶Sm3+ Phosphors with Low Thermal Quenching[J].Chinese Journal of Luminescence,2022,43(06):879-890.
杨伟斌,熊飞兵,杨寅等.低热猝灭新型Sr3Ga2Ge4O14∶Sm3+橙红色荧光粉[J].发光学报,2022,43(06):879-890. DOI: 10.37188/CJL.20220055.
YANG Wei-bin,XIONG Fei-bing,YANG Yin,et al.Novel Orange-red-emitting Sr3Ga2Ge4O14∶Sm3+ Phosphors with Low Thermal Quenching[J].Chinese Journal of Luminescence,2022,43(06):879-890. DOI: 10.37188/CJL.20220055.
采用高温固相法制备一系列新型Sr
3-
x
Ga
2
Ge
4
O
14
∶
x
Sm
3+
(
x=
0~0.20)及Sr
2.88
Ga
2
Ge
4
O
14
∶0.06Sm
3+
,0.06
M
(
M
=Li
+
,Na
+
,K
+
)荧光粉,通过物相形貌、荧光光谱、热稳定性及CIE色度坐标等分析手段对样品性能进行了详细研究。根据不同掺杂浓度Sr
3-
x
Ga
2
Ge
4
O
14
∶
x
Sm
3+
的荧光发射谱,发现Sm
3+
最佳掺杂浓度为
x=
0.06,其荧光浓度猝灭归因于Sm
3+
之间的电偶极-电偶极相互作用。研究发现,通过共掺杂
M
(
M
=Li
+
,Na
+
,K
+
)做电荷补偿离子可以提升Sr
3-
x
Ga
2
Ge
4
O
14
∶
x
Sm
3+
的发光性能。此外,随着Sm
3+
掺杂浓度提高,其荧光寿命不断减小。最后探讨了Sr
3-
x
Ga
2
Ge
4
O
14
∶
x
Sm
3+
的CIE色度坐标和热稳定性,其CIE色度坐标位于橙红光区域,且在423 K的发光强度大概为其室温的95%。研究表明,Sr
3-
x
Ga
2
Ge
4
O
14
∶
x
Sm
3+
作为新型橙红荧光粉有望应用于白光发光二极管(WLED)。
A series of Sr
3-
x
Ga
2
Ge
4
O
14
∶
x
Sm
3+
(
x
=0-0.20)and Sr
2.88
Ga
2
Ge
4
O
14
∶0.06Sm
3+
,0.06
M
(
M
= Li
+
, Na
+
, K
+
)phosphors were prepared
via
the high temperature solid-state reaction. The phase structure, crystal morphology, fluorescent spectra, temperature-dependent spectra, and CIE chromaticity coordinates of the samples were investigated. The optimal doping concentration in Sr
3-
x
Ga
2
Ge
4
O
14
∶
x
Sm
3+
was
x
=0.06, and the concentration quenching could be ascribed to the dipole-dipole interaction between Sm
3+
ions. The luminescent emission intensities of Sr
3-
x
Ga
2
Ge
4
O
14
∶
x
Sm
3+
were greatly enhanced by co-doped
M
(
M
=Li
+
, Na
+
, K
+
)ions as charge compensator. The fluorescent decay lifetime became shorter when increasing Sm
3+
concentration. The CIE chromaticity coordinates and thermal stability properties of Sr
3-
x
Ga
2
Ge
4
O
14
∶
x
Sm
3+
were discussed. The CIE chromaticity coordinates of Sr
3-
x
Ga
2
Ge
4
O
14
∶
x
Sm
3+
were located within the orange-red spectral region and the luminescent emission intensities could remain 95% of that at room temperature. All these results indicated that Sr
3-
x
Ga
2
Ge
4
O
14
∶
x
Sm
3+
could be a potential candidate as a novel orange-red emitting component applied in white light emitting diode(WLED).
Sr3Ga2Ge4O14Sm3+电荷补偿剂光致发光白光发光二极管(WLED)
Sr3Ga2Ge4O14Sm3+charge compensatorphotoluminescencewhite light emitting diode(WLED)
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