Metal halide perovskite nanocrystals with enhanced photoluminescence and stability toward anti-counterfeiting high-performance flexible fibers

Zhou, Ranran; Cheng, Chi‐An; Wang, Xuyi; Nie, Kun; Wu, Jing; Wu, Mengyun; Duan, Xiuqiang; Hu, Ziyao; Huq, Injamam Ul; Wang, Hua; Wang, Luoxin; Mei, Lefu; Liu, Haikun; Ma, Xiaoqian

doi:10.1007/s12274-022-5041-8

Cited by 17 publications

(8 citation statements)

References 58 publications

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“…The time-resolved (TRPL) decay curves (shown in Fig. 5a) of Cs 2 Sn 1− x Te x Cl 6 PCs can be well fitted with the bi-exponential eqn (1): 33 I ( t ) = A 1 exp(− t / τ 1 ) + A 2 exp(− t / τ 2 ).…”

Section: Resultsmentioning

confidence: 93%

Facile synthesis strategy for cesium tin halide perovskite crystals toward light emitting devices and anti-counterfeiting flexible fiber

Nie

Wang³

et al. 2023

Nanoscale

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Section: Resultsmentioning

confidence: 93%

Facile synthesis strategy for cesium tin halide perovskite crystals toward light emitting devices and anti-counterfeiting flexible fiber

Nie

Wang³

et al. 2023

Nanoscale

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“…It is known to all that perovskite is intrinsically unstable upon water, [7] humidity, [49,50] heating, [51] VU irradiation, [52,53] etc. It is susceptible to degradation and thus causes PL quenching.…”

Section: The Pl Stability Evaluationmentioning

confidence: 99%

Large‐Scale, Stretchable, Self‐Protective, and Multifunctional Perovskite Luminescent Filament with Ultra‐High Stability

Yang,

Liu,

et al. 2024

Advanced Materials

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Lead halide perovskites possess great application potential in flexible displays and wearable optoelectronics owing to their prominent optoelectronic properties. However, the intrinsic instability upon moisture, heat, and ultraviolet light irradiation hinders their development and application. In this work, an ultra‐stable CsPbX3 (X = Cl, Br, I) perovskite luminescent filament (PLF) with high stretchability (∼2400%) and luminescence is introduced by a facile environmental‐friendly wet‐spinning technology via solvent extraction (with a high production rate of 0.7 m/min and low cost of 1.56 USD per 100 m). The CsPbX3 PLF displays homogeneous luminescence (photoluminescence quantum yield of 24.5%), tunable emission spectrum, and high color purity. Benefiting from the in‐situ encapsulation effect of the hydrophobic thermoplastic polyurethane (TPU) and the chelation of the Lewis base C = O in TPU with the Lewis acid Pb2+, the CsPbBr3 PLF demonstrates ultra‐high photoluminescence (PL) stability when stored in ambient air and high humidity circumstance, annealed at 50 °C, and dipped in water for 30 d, illuminated under ultraviolet light for 300 min, and immersed in organic solvents and solutions with pH of 1–13 for 5 min, respectively. Impressively, it retains 80% of its initial PL after being recycled 5 times. Overall, the CsPbX3 PLF demonstrates promising prospects in multifunctional applications, including organic dyes and tensile strain sensing, flexible pattern displays, secondary anti‐counterfeiting, and hazard warning systems.This article is protected by copyright. All rights reserved

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“…[1][2][3][4][5][6][7] Furthermore, researchers have developed various synthesis and control methods, including morphology control, surface passivation, and ion doping, to reduce the defect density in nanocrystals and achieve efficient luminescence. [8][9][10][11][12][13] Despite extensive optimization of APbX 3 perovskite nanocrystals, their luminescence is still affected by factors such as reduced PLQY due to nanocrystal aggregation and poor stability, which greatly hinder their further application in optoelectronic devices. Additionally, the environmental and biological toxicity of lead elements cannot be ignored.…”

Section: Introductionmentioning

confidence: 99%

Alkali metal salt-assisted crystal structure switch of hybrid indium halides with near-unity photoluminescence quantum yield

Zhang,

Chen,

Chen

et al. 2024

J. Mater. Chem. C

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Metal halide perovskite nanocrystals with enhanced photoluminescence and stability toward anti-counterfeiting high-performance flexible fibers

Cited by 17 publications

References 58 publications

Facile synthesis strategy for cesium tin halide perovskite crystals toward light emitting devices and anti-counterfeiting flexible fiber

Facile synthesis strategy for cesium tin halide perovskite crystals toward light emitting devices and anti-counterfeiting flexible fiber

Large‐Scale, Stretchable, Self‐Protective, and Multifunctional Perovskite Luminescent Filament with Ultra‐High Stability

Alkali metal salt-assisted crystal structure switch of hybrid indium halides with near-unity photoluminescence quantum yield

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