Synergetic Effect of the Surfactant and Silica Coating on the Enhanced Emission and Stability of Perovskite Quantum Dots for Anticounterfeiting

doi:10.1021/acsami.9b07518

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	Synergetic Effect of the Surfactant and Silica Coating on the Enhanced Emission and Stability of Perovskite Quantum Dots for Anticounterfeiting
	F.Zhang; Z.F.Shi; S.Li; Z.Z.Ma; Y.Li; L.T.Wang; D.Wu
	2019
发表期刊	Acs Applied Materials & Interfaces
ISSN	1944-8244
卷号	11 期号:31 页码:28013-28022
摘要	Recently, the growing demand for optical anticounterfeiting technology has motivated intensive research in newly emerging halide perovskite quantum dots (QDs). However, the poor stability and unsatisfactory fluorescence efficiency of such materials are the main obstacles to the application of reliable anticounterfeiting. In this work, we performed a well-controlled investigation of the effect of the surfactant (L-alpha-phosphatidylcholine, LP) and silica encapsulation on the stability and emission of the CsPbBr3 QDs. Because of the synergetic effect of the surfactant and core/shell configuration, the resulting CsPbBr3/LP/SiO2 QD composites demonstrated a higher photoluminescence quantum yield (>90%), a better color purity, and a significantly improved stability in heat, ultraviolet light, water, and ambient oxygen, which provide them the basic conditions as a high-tech security ink for anticounterfeiting. By inkjet printing technology, we demonstrated that our CsPbBr3/LP/SiO2 QD composites can act as a smart concealed ink for information encryption and decryption. More importantly, the anticounterfeiting effect can be efficiently sustained even though the paper with designable patterns was crudely treated by water-soaking, heating/cooling cycling, and continuous ultraviolet light switching (1500 cycles). The above results obtained provide effective strategies to improve emission efficiency and stability of perovskite QDs, thereby enduing them anticounterfeiting application potential.
关键词	Perovskite,quantum dots,surfactant,coating,anticounterfeiting,lead halide perovskites,high-efficiency,cspbx3 x,nanocrystals,luminescent,br,cl,photoluminescence,ligand,acid,Science & Technology - Other Topics,Materials Science
DOI	10.1021/acsami.9b07518
收录类别	SCI ; EI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/62819
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	F.Zhang,Z.F.Shi,S.Li,et al. Synergetic Effect of the Surfactant and Silica Coating on the Enhanced Emission and Stability of Perovskite Quantum Dots for Anticounterfeiting[J]. Acs Applied Materials & Interfaces,2019,11(31):28013-28022.
APA	F.Zhang.,Z.F.Shi.,S.Li.,Z.Z.Ma.,Y.Li.,...&D.Wu.(2019).Synergetic Effect of the Surfactant and Silica Coating on the Enhanced Emission and Stability of Perovskite Quantum Dots for Anticounterfeiting.Acs Applied Materials & Interfaces,11(31),28013-28022.
MLA	F.Zhang,et al."Synergetic Effect of the Surfactant and Silica Coating on the Enhanced Emission and Stability of Perovskite Quantum Dots for Anticounterfeiting".Acs Applied Materials & Interfaces 11.31(2019):28013-28022.

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