Plasmon-Enhanced Blue-Light Emission of Stable Perovskite Quantum Dot Membranes

被引：8
作者：
Gu, Kai [1 ]
Peng, Hongshang [1 ,2 ]
Hua, Siwei [1 ]
Qu, Yusong [1 ]
Yang, Di [1 ]
机构：
[1] Minzu Univ China, Coll Sci, Beijing 10081, Peoples R China
[2] Beijing Jiaotong Univ, Inst Optoelect Technol, Minist Educ, Key Lab Luminescence & Opt Informat, Beijing 100044, Peoples R China
来源：
NANOMATERIALS | 2019年 / 9卷 / 05期
基金：
美国国家科学基金会;
关键词：
perovskite quantum dots; plasmon-enhance fluorescence; electrospinning; ORGANIC-INORGANIC PEROVSKITE; FLUORESCENCE; NANOPARTICLES; NANOCRYSTALS; FABRICATION; DISPERSION;
D O I：
10.3390/nano9050770
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A series of stable and color-tunable MAPbBr(3-x)Cl(x) quantum dot membranes were fabricated via a cost-efficient high-throughput technology. MAPbBr(3-x)Cl(x) quantum dots grown in-situ in polyvinylidene fluoride electrospun nanofibers exhibit extraordinary stability. As polyvinylidene fluoride can prevent the molecular group MA(+) from aggregating, MAPbBr(3-x)Cl(x) quantum dots are several nanometers and monodisperse in polyvinylidene fluoride fiber. As-prepared MAPbBr(3-x)Cl(x) quantum dot membranes exhibit the variable luminous color by controlling the Cl- content of MAPbBr(3-x)Cl(x) quantum dots. To improve blue-light emission efficiency, we successfully introduced Ag nanoparticle nanofibers into MAPbBr(1.2)Cl(1.8) quantum dot membranes via layer-by-layer electrospinning and obtained similar to 4.8 folds fluorescence enhancement for one unit. Furthermore, the originality explanation for the fluorescence enhancement of MAPbBr(3-x)Cl(x) quantum dots is proposed based on simulating optical field distribution of the research system.
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页数：12
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