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1.东莞理工学院 电子工程与智能化学院, 广东 东莞 523808
2.华南师范大学 信息光电子科技学院, 广东省微纳光子功能材料与器件重点实验室, 广东 广州 510006
[ "索慧娴(1998-),女,湖北黄冈人,硕士研究生,2020年于三峡大学获得学士学位,主要从事稀土发光材料的研究。 E-mail: shx981128@163.com" ]
[ "康晓娇(1987-),女,内蒙古巴彦淖尔人,博士,副研究员,2013年于中国科学院长春应用化学研究所获得博士学位,主要从事量子点发光材料的研究。 E-mail: xjkang1986@163.com" ]
[ "吕伟(1984-),男,吉林汪清人,博士,副研究员,2012年于中国科学院长春光学精密机械与物理研究所获得博士学位,主要从事LED用发光材料的 研究。 E-mail: lvweiluwei@163.com" ]
收稿日期:2022-12-08,
修回日期:2022-12-16,
纸质出版日期:2023-05-05
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索慧娴,宋志,康晓娇等.阳离子替换提升Li3Cs2Ba2-xSrxB3P6O24∶Eu2+荧光粉热稳定性[J].发光学报,2023,44(05):837-844.
SUO Huixian,SONG Zhi,KANG Xiaojiao,et al.Enhancing Thermal Stability of Li3Cs2Ba2-xSrxB3P6O24∶Eu2+ Phosphor via Cation Substitution[J].Chinese Journal of Luminescence,2023,44(05):837-844.
索慧娴,宋志,康晓娇等.阳离子替换提升Li3Cs2Ba2-xSrxB3P6O24∶Eu2+荧光粉热稳定性[J].发光学报,2023,44(05):837-844. DOI: 10.37188/CJL.20220407.
SUO Huixian,SONG Zhi,KANG Xiaojiao,et al.Enhancing Thermal Stability of Li3Cs2Ba2-xSrxB3P6O24∶Eu2+ Phosphor via Cation Substitution[J].Chinese Journal of Luminescence,2023,44(05):837-844. DOI: 10.37188/CJL.20220407.
热猝灭性能极大程度上限制了发光材料的应用,如何改善发光材料的热稳定性这一课题受到了广泛关注。本文通过高温固相法制备了一系列浓度梯度的Li
3
Cs
2
Ba
2-
x
Sr
x
B
3
P
6
O
24
∶0.03Eu
2+
荧光粉,并对该系列荧光粉进行了表征,对其XRD、激发发射光谱、荧光寿命、热猝灭性能进行了分析。结果表明,通过阳离子Sr替代Ba的方法不但改善了晶格结构,提升了样品的发光强度,而且使原发光材料的热稳定性能进一步得到了提高。对于Li
3
Cs
2
Ba
2
B
3
P
6
O
24
∶Eu
2+
样品,在150 ℃下的发光强度已经可以达到常温下的79%,通过Sr替换Ba,该强度能够进一步提高到87%。相关分析及结论可为荧光粉热稳定性的改善提供思路与依据。
One of the more critical attributes of inorganic phosphors is the thermal quenching properties. In this study, we attempt to improve the photoluminescence and thermal quenching behavior by cation substitution. The optical, structural property, the thermal stability, and lifetime decay properties of phosphors were investigated. The results indicate that Sr substitution of Ba in Li
3
Cs
2
Ba
2-
x
Sr
x
B
3
P
6
O
24
∶Eu
2+
system could not only improve the luminous efficiency but also achieve better thermal stability at high temperature. This new series of blue luminescent materials have potential applications in LED applications. More importantly, we demonstrate a strategy to develop highly efficient, thermally stable phosphors.
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