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1.闽江学院 材料与化学工程学院, 福建 福州 350108
2.福建工程学院 材料科学与工程学院, 福建 福州 350118
3.闽江学院 物理与电子信息工程学院, 福建 福州 350108
[ "丁梦宇(1995-),男,江苏盐城人,硕士研究生,2018年于南京工程学院获得学士学位,主要从事量子点发光材料与器件的研究。 E⁃mail: 2201604039@mail.fjut.edu.cn" ]
[ "郑标(1989-),男,福建福州人,博士,副教授,2018年于福建师范大学获得博士学位,主要从事稀土发光材料与量子点发光材料的研究。 E⁃mail: biaozheng@mju.edu.cn" ]
[ "王军(1969-),男,江西丰城人,博士,教授,2004年于中国科学技术大学获得博士学位,主要从事纳米磁性材料、量子点发光材料及柔性电子材料等方向的研究。 E⁃mail: wangjun2@mju.edu.cn" ]
收稿日期:2022-05-03,
修回日期:2022-05-23,
纸质出版日期:2022-08-05
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丁梦宇,郑标,魏维平等.单分散CsPbBr3@SiO2纳米颗粒制备及其在柔性显示与荧光防伪中的应用[J].发光学报,2022,43(08):1309-1318.
DING Meng-yu,ZHENG Biao,WEI Wei-ping,et al.Synthesis of Monodisperse CsPbBr3@SiO2 Nanoparticles for Flexible Display and Anti-counterfeiting[J].Chinese Journal of Luminescence,2022,43(08):1309-1318.
丁梦宇,郑标,魏维平等.单分散CsPbBr3@SiO2纳米颗粒制备及其在柔性显示与荧光防伪中的应用[J].发光学报,2022,43(08):1309-1318. DOI: 10.37188/CJL.20220156.
DING Meng-yu,ZHENG Biao,WEI Wei-ping,et al.Synthesis of Monodisperse CsPbBr3@SiO2 Nanoparticles for Flexible Display and Anti-counterfeiting[J].Chinese Journal of Luminescence,2022,43(08):1309-1318. DOI: 10.37188/CJL.20220156.
为了提高钙钛矿纳米晶CsPb
X
3
(
X
=Cl, Br, I)在水或热等环境中的稳定性,本文采用热注射法合成了3‐氨丙基‐三乙氧基硅烷(APTES)修饰的CsPbBr
3
纳米晶,在此基础上,以正硅酸四甲基酯(TMOS)为硅源制备了CsPbBr
3
@SiO
2
核壳结构纳米颗粒。通过X射线衍射、透射电子显微镜和荧光光谱仪等测试手段对样品的结构、形貌、光谱特性及稳定性等进行了分析。结果表明,CsPbBr
3
纳米晶表面形成了SiO
2
壳层,同时,CsPbBr
3
@SiO
2
纳米颗粒仍保持优异的光学性能。更重要的是,SiO
2
壳层显著提高了CsPbBr
3
的水、热稳定性,CsPbBr
3
@SiO
2
在60 ℃加热30 min后发光强度可以保持初始强度的81%,浸水100 min后发光强度仍保持初始强度的75.2%。此外,我们设计了CsPbBr
3
@SiO
2
‐聚二甲基硅氧烷(PDMS)复合薄膜,实现了CsPbBr
3
@SiO
2
在柔性显示与荧光防伪方面的应用,有望为柔性显示和荧光防伪材料的开发提供参考。
To improve the stabilities of all-inorganic perovskite nanocrystals(NCs) CsPb
X
3
(
X
=Cl, Br, I) under water or thermal conditions, 3-aminopropyl-triethoxysilane(APTES) modified CsPbBr
3
NCs were synthesized by a hot-injection method, and then CsPbBr
3
@SiO
2
core-shell nanoparticles(NPs) were prepared by using tetramethyl orthosilicate(TMOS) as silicon source. The structures, morphologies, optical properties and stabilities of the CsPbBr
3
@SiO
2
samples were characterized and analyzed by X-ray diffractions, transmission electron microscopy and fluorescence spectrometer. The results show that the SiO
2
shell forms uniformly on surface of CsPbBr
3
NCs, which still shows excellent optical properties. More importantly, the stabilities of CsPbBr
3
@SiO
2
NPs are significantly improved in water or thermal atmosphere. The photoluminescence intensity of CsPbBr
3
@SiO
2
remains 81% under heated at 60 ℃ for 30 min, and it remains 75.2% when mixed with water for 100 min. Furthermore, we fabricated CsPbBr
3
@SiO
2
-polydimethylsiloxane(PDMS) composite films to explore the applications of CsPbBr
3
@SiO
2
in the field of flexible display and fluorescent anti-counterfeiting.
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