The direct water quenching process in the preparation of broad wavelength tunable CsPb(Br/I)3 NCs@glass for backlight display

Liu, Xiaoting; Yao, Takeshi; Wang, Qin; Liang, Xiaojuan; Zhang, Zhijun; Fan, Hongbin; Xiang, Weidong

doi:10.1016/j.mtnano.2022.100288

Cited by 4 publications

(4 citation statements)

References 44 publications

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“…To get white light, CsPbBr 1.2 I 1.8 glass red powder (630 nm) was used as the red emitter, and CsPbBr 3 –SiO 2 was utilized for green emission. The design of the backlit display device is consistent with that described in our published paper . The difference is that the composition and preparation method of the composite film are different.…”

Section: Methodsmentioning

confidence: 99%

“…The design of the backlit display device is consistent with that described in our published paper. 42 The difference is that the composition and preparation method of the composite film are different.…”

Section: ■ Introductionmentioning

confidence: 99%

“…The characterization of experimental samples is consistent with our earlier published papers. 42 ■ RESULTS AND DISCUSSION Nano-silicon dioxide (nano-SiO 2 ) was selected as the MS template attributed to its large pore size. As schematically shown in Figure 1a, CsPbBr 3 NCs were compounded in the restricted pores of nano-SiO 2 under such high temperatures, while the pore structure of nano-SiO 2 gradually disintegrated and encapsulated CsPbBr 3 NCs and ultimately formed a dense CsPbBr 3 −SiO 2 solid.…”

Section: ■ Introductionmentioning

confidence: 99%

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Stable CsPbBr₃ Nanocrystals Embedded in SiO₂ for Backlight Display Applications

Liu

Chen

Yang

et al. 2023

ACS Appl. Electron. Mater.

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As we all know, the various excellent properties of perovskite nanocrystals (NCs) have attracted attention in recent years. However, thei work stability is still the bottleneck to be solved urgently in their commercialization process. In this study, we encapsulated CsPbBr3 quantum dots in nano-SiO2 (inorganic) by a high-temperature sintering method and investigated the changes in optical stability before and after encapsulation. The SiO2 shell can effectively suppress anion exchange and photodegradation, which greatly improves the photothermal stability of shell NCs. Preparation of composite films by mixing CsPbBr3–SiO2 (inorganic) and polymer material PMMA (organic) by a solvent solution method can further enhance its stability. Meanwhile, the backlight display device realized the practical application of CsPbBr3–SiO2/CsPbBr1.2I1.8@PMMA with a wide color gamut (112% of the NTSC, 84% of the Rec. 2020). This is a very significant step to open up the awkward situation of the practical application of perovskite NC materials in backlight displays.

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Section: Methodsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

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Stable CsPbBr₃ Nanocrystals Embedded in SiO₂ for Backlight Display Applications

Liu

Chen

Yang

et al. 2023

ACS Appl. Electron. Mater.

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“…Moreover, owing to the ionic character of the crystal structure, perovskite QDs are susceptible to decomposition or agglomeration in polar solvents, resulting in instability, which seriously hinders their practical application. Among the reported strategies, − embedding QDs into glass substrates has been deemed practical as it effectively overcomes the instability challenges of QDs while maintaining their optical properties, thereby providing them with a broader application space. − The CsPbBr 3 @ glass prepared by Chen’s team effectively isolated the external environment through a tight glass network with a record EQE of 75% . The Sn-doped CsPbBr 3 QDs glasses prepared by Liu et al by conventional melt quenching and heat treatment showed excellent stability and optical properties.…”

Section: Introductionmentioning

confidence: 99%

Moisture-Stable CsSnBr₃ Quantum Dots and SnO₂ Glass-Ceramics for Broadband White-Emitting Diodes

Huang,

He,

Yang

et al. 2024

ACS Appl. Nano Mater.

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Lead-free tin-based perovskite quantum dots (QDs) are considered the most promising alternatives to lead-based perovskites, but their potential application is hindered by poor stability. This issue was addressed by preparing amorphous glassprotected CsSnBr 3 QDs through meticulous optimization of the glass structure. Intriguingly, the self-crystallization of the CsSnBr 3 QDs occurred without needing heat treatment. We found that the CsSnBr 3 QDs glass-ceramic is composed of two phases, SnO 2 and CsSnBr 3 , of which SnO 2 is the main phase. At the same time, the tunability of the luminescence color can be achieved by changing the silicon−boron ratio and melting temperature in the glass matrix. Moreover, due to the complete encapsulation of the quantum dots by the glass matrix, the CsSnBr 3 QDs glass-ceramic exhibited remarkable stability and a high photoluminescence quantum efficiency (51.5%). Subsequently, the CsSnBr 3 QDs glassceramic was incorporated with an ultraviolet chip to produce a white light-emitting diode (WLED), and its potential application in plant growth was explored.

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Exploring CsPbX₃ (X = Cl, Br, I) Perovskite Nanocrystals in Amorphous Oxide Glasses: Innovations in Fabrication and Applications

Samiei,

Soheyli,

Vighnesh

et al. 2023

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Metal halide perovskites with excellent optical and electronic properties have become a trending material in the current research. However, their limited stability under ambient conditions degrades quality and threatens their potential commercialization as optoelectronic devices. Various approaches are adopted to improve the stability of perovskite nanocrystals (PeNC) while maintaining their advantageous optical properties, particularly strong luminescence. Among different possible improvement strategies, encapsulation of PeNCs within the amorphous glass matrices of inorganic oxides has drawn widespread attention because it ensures high resistance against chemical corrosion and high temperature, thus enhancing their chemical, thermal, and mechanical stability with improved light‐emission characteristics. In this article, two types of materials, namely all‐inorganic metal halide PeNCs and amorphous oxide glasses are briefly introduced, and then the methods are reviewed to fabricate and improve the quality of PeNC@glass composites. These methods are classified into three universal categories: compositional modification, structural modification, and dual encapsulation. In the final part of this review paper, examples of applications of PeNCs@glass composites in light‐emitting devices and displays, data storage and anti‐counterfeiting, lasing, photodetectors and X‐ray detectors, photocatalysis, optical filters, solar concentrators, and batteries are provided.

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The direct water quenching process in the preparation of broad wavelength tunable CsPb(Br/I)3 NCs@glass for backlight display

Cited by 4 publications

References 44 publications

Stable CsPbBr₃ Nanocrystals Embedded in SiO₂ for Backlight Display Applications

Stable CsPbBr₃ Nanocrystals Embedded in SiO₂ for Backlight Display Applications

Moisture-Stable CsSnBr₃ Quantum Dots and SnO₂ Glass-Ceramics for Broadband White-Emitting Diodes

Exploring CsPbX₃ (X = Cl, Br, I) Perovskite Nanocrystals in Amorphous Oxide Glasses: Innovations in Fabrication and Applications

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The direct water quenching process in the preparation of broad wavelength tunable CsPb(Br/I)3 NCs@glass for backlight display

Cited by 4 publications

References 44 publications

Stable CsPbBr3 Nanocrystals Embedded in SiO2 for Backlight Display Applications

Stable CsPbBr3 Nanocrystals Embedded in SiO2 for Backlight Display Applications

Moisture-Stable CsSnBr3 Quantum Dots and SnO2 Glass-Ceramics for Broadband White-Emitting Diodes

Exploring CsPbX3 (X = Cl, Br, I) Perovskite Nanocrystals in Amorphous Oxide Glasses: Innovations in Fabrication and Applications

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Product

Resources

About

Stable CsPbBr₃ Nanocrystals Embedded in SiO₂ for Backlight Display Applications

Stable CsPbBr₃ Nanocrystals Embedded in SiO₂ for Backlight Display Applications

Moisture-Stable CsSnBr₃ Quantum Dots and SnO₂ Glass-Ceramics for Broadband White-Emitting Diodes

Exploring CsPbX₃ (X = Cl, Br, I) Perovskite Nanocrystals in Amorphous Oxide Glasses: Innovations in Fabrication and Applications