Brightly-Luminescent and Color-Tunable Colloidal CH3NH3PbX3 (X=Br, I, Cl) Quantum Dots: Potential Alternatives for Display Technology

Zhang, Feng; Chen, Cheng; Wu, Xian‐gang; Hu, Xiangmin; Huang, Hailong; Han, Junbo; Zou, B. S.; Dong, Yong; Zhong, Haizheng

doi:10.1364/pfe.2015.pw2e.3

Cited by 106 publications

(187 citation statements)

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“…S8). The average anchoring point number of polymer chain on the MAPbBr 3 NCs can be quantitatively determined by the FTIR spectra of pure PMMA, SNBP films and PLAR films [26,29,30,34]. The anchor point number of each chain in PLAR films is about twice as much as that of SNBP films (Supplementary Text S1 and Fig.…”

Section: Resultsmentioning

confidence: 99%

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A stable lead halide perovskite nanocrystals protected by PMMA

et al. 2018

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To enhance the stability in humidity is very crucial to hybrid organic-inorganic lead halide perovskites in a broad range of applications. This report describes a coating stratergy of perovskite nanocrystals via polymethylmethacrylate-introduced ligand-assisted reprecipitation, using the interactions between the Pb cations on the surface of perovskite nanocrystals and the functional ester carbonyl groups in polymethylmethacrylate framework. The hydrophobic framework shields the open metal sites of hybrid organic-inorganic lead halide perovskites from being attacked by water, effectively retarding the diffusion of water into the perovskite nanocrystals. The as-prepared films demonstrate high resistance to heat and moisture. Additionally, the introduction of polymethylmethacrylate into ligand-assisted reprecipitation can effectively control the bulk precipitation and promote the stability of the perovskite solution.

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Section: Resultsmentioning

confidence: 99%

“…Here a coating of perovskite nanocrystals (NCs) was anchored via the ligand-assisted reprecipitation (LAR) which usually offers good surface coating on NCs [29,30]. To bond the Pb cations of perovskite NCs, polymethyl methacrylate (PMMA) was introduced on HOIP NCs by LAR method.…”

Section: Introductionmentioning

confidence: 99%

A stable lead halide perovskite nanocrystals protected by PMMA

et al. 2018

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“…The optical and electronic properties of perovskites are tunable by varying the composition of constituted halide ions and to a smaller degree of the cations. 22,23 In addition, the size and dimensionality of perovskites can also be used to tune their optical properties, similar to conventional metal chalcogenide semiconductors. 24,25 Although perovskites can be obtained with dimensionality ranging from the 3D to 0D by varying the synthetic conditions used (Figure 1b), they have a strong tendency to form layered two-dimensional (2D) and quasi-2D structures ( Figure 1c).…”

Section: Introductionmentioning

confidence: 99%

“…[25][26][27] Recent studies have shown that colloidal perovskite nanocrystals (NCs) can exhibit very high photoluminescence quantum yields (PL QY). [23][24][25][28][29][30] Moreover, they show strong quantum confinement effects when their dimensionality changes from 3D to 2D, offering additional tunability of optical properties. Perovskite NCs have already shown great promise in many applications such as lasers, LEDs and photovoltaic devices.…”

Section: Introductionmentioning

confidence: 99%

“…Perovskite NCs have already shown great promise in many applications such as lasers, LEDs and photovoltaic devices. 10,23,[31][32][33][34][35][36][37][38] Even though the research on perovskite NCs is still in its starting stage, they are expected to have a significant role in the development of modern nanoscience and nanotechnology in the near future. This review provides an overview of the up-to-date developments in the synthesis of hybrid organicinorganic and all-inorganic perovskite NCs, their attractive optical properties and related emerging applications.…”

Section: Introductionmentioning

confidence: 99%

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Colloidal lead halide perovskite nanocrystals: synthesis, optical properties and applications

et al. 2016

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Lead halide perovskite nanocrystals (NCs) are receiving a lot of attention nowadays, due to their exceptionally high photoluminescence quantum yields reaching almost 100% and tunability of their optical band gap over the entire visible spectral range by modifying composition or dimensionality/size. We review recent developments in the direct synthesis and ion exchange-based reactions, leading to hybrid organic-inorganic (CH 3 NH 3 PbX 3 ) and all-inorganic (CsPbX 3 ) lead halide (X = Cl, Br, I) perovskite NCs, and consider their optical properties related to quantum confinement effects, single emission spectroscopy and lasing. We summarize recent developments on perovskite NCs employed as an active material in several applications such as light-emitting devices, solar cells and photodetectors, and provide a critical outlook into the existing and future challenges.

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Heterojunction‐Type Photocatalytic System Based on Inorganic Halide Perovskite CsPbBr₃^†

et al. 2020

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of main observation and conclusion The heterojunction-type structure has shown significant merits in tuning the optical properties and carrier physics. Inspired by the excellent absorption capability of halide perovskite materials for visible light, a series of CsPbBr3/TiO2 heterojunction-type photocatalysts with various all-inorganic-perovskite/TiO2 ratios are successfully fabricated by the ligand-assisted reprecipitation (LARP) method. The heterojunction structure extends the light absorption of TiO2 with good chemical and structural stability. A Pb-O interaction at the CsPbBr3/TiO2 interface is observed by the XPS and confirmed by the TRPL showing improved interface carrier transport and stability. The heterojunction-type catalyst shows drastically enhanced photocatalytic activity towards the direct oxidation of toluene with O2 molecule, as an important reaction for organic chemical synthesis. The optimized sample shows an activity of 2356 μmol•g-1 •h-1 at 75 °C, 4 times of that of the naked CsPbBr3 nanocrystals, and 3 times of that of the bare TiO2. Based on the investigation with trapping agents, a reaction mechanism is hence proposed suggesting that the photo-generated hole may be involved in the rate-limiting step. This work demonstrates the potential of inorganic halide perovskite-based heterojunction structure for photocatalytic applications.

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Brightly-Luminescent and Color-Tunable Colloidal CH3NH3PbX3 (X=Br, I, Cl) Quantum Dots: Potential Alternatives for Display Technology

Cited by 106 publications

References 2 publications

A stable lead halide perovskite nanocrystals protected by PMMA

A stable lead halide perovskite nanocrystals protected by PMMA

Colloidal lead halide perovskite nanocrystals: synthesis, optical properties and applications

Heterojunction‐Type Photocatalytic System Based on Inorganic Halide Perovskite CsPbBr₃^†

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Brightly-Luminescent and Color-Tunable Colloidal CH3NH3PbX3 (X=Br, I, Cl) Quantum Dots: Potential Alternatives for Display Technology

Cited by 106 publications

References 2 publications

A stable lead halide perovskite nanocrystals protected by PMMA

A stable lead halide perovskite nanocrystals protected by PMMA

Colloidal lead halide perovskite nanocrystals: synthesis, optical properties and applications

Heterojunction‐Type Photocatalytic System Based on Inorganic Halide Perovskite CsPbBr3†

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Product

Resources

About

Heterojunction‐Type Photocatalytic System Based on Inorganic Halide Perovskite CsPbBr₃^†