Mitigating halide ion migration by resurfacing lead halide perovskite nanocrystals for stable light-emitting diodes

Chemical Society Reviews, Journal Year: 2023, Volume and Issue: 52(16), P. 5516 - 5540

Published: Jan. 1, 2023

Lead halide perovskite nanocrystals are promising for next-generation high-definition displays, especially in light of their tunable bandgaps, high color purities, and carrier mobility. Within the past few years, external quantum efficiency nanocrystal-based light-emitting diodes has progressed rapidly, reaching standard commercial applications. However, low operational stability these remains a crucial issue industrial development. Recent experimental evidence indicates that migration ionic species is primary factor giving rise to performance degradation diodes, ion closely related defects on surface at grain boundaries thin films. In this review, we focus central idea reconstruction nanocrystals, discuss influence migration, summarize recent advances resurfacing nanocrystal strategies toward mitigating improve as-fabricated diode devices. From perspective resurfacing, set out research direction improving both spectral diodes.

Language: Английский

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Silica-Encapsulated Perovskite Nanocrystals for X-ray-Activated Singlet Oxygen Production and Radiotherapy Application

ACS Energy Letters, Journal Year: 2023, Volume and Issue: 8(4), P. 1795 - 1802

Published: March 17, 2023

Multicomponent systems consisting of lead halide perovskite nanocrystals (CsPbX3-NCs, X = Br, I) grown inside mesoporous silica nanospheres (NSs) with selectively sealed pores combine intense scintillation and strong interaction ionizing radiation CsPbX3 NCs the chemical robustness in aqueous environment particles, offering potentially promising candidates for enhanced radiotherapy radio-imaging strategies. We demonstrate that boost generation singlet oxygen species (1O2) water under X-ray irradiation encapsulation into SiO2 NSs guarantees perfect preservation inner after prolonged storage harsh conditions. find 1O2 production is triggered by electromagnetic shower released a striking correlation composition (I3 > I3-x Br x Br3). This opens possibility designing multifunctional radio-sensitizers able to reduce local delivered dose undesired collateral effects surrounding healthy tissues improving localized cytotoxic effect therapeutic treatments concomitantly enabling optical diagnostics radio imaging.

Language: Английский

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ZIF‐8@CsPbBr₃ Nanocrystals Formed by Conversion of Pb to CsPbBr₃ in Bimetallic MOFs for Enhanced Photocatalytic CO₂ Reduction

Small Methods, Journal Year: 2024, Volume and Issue: unknown

Published: Feb. 20, 2024

Abstract Perovskite nanocrystals are embedded into metal–organic frameworks (MOFs) to create composites with high light absorption coefficients, tunable electronic properties, specific surface area, and metal atom tunability for enhanced photocatalytic carban dioxide (CO 2 ) reduction. However, existing perovskite‐MOF structures a large particle size achieved based on Pb source adsorption the pores of MOFs, which can significantly break down porous structure, thereby resulting in decreased area impacting CO adsorption. Herein, novel structure synthesis bimetallic Pb‐containing MOFs post‐processing convert CsPbBr 3 (NCs) is proposed. It discovered that additional not introduced by adsorption, but instead engages coordination generates Pb‐N. The produced ZIF‐8@CsPbBr NCs ≈40 nm have an ultra‐high 1325.08 m g −1 , excellent photovoltaic characteristics, beneficial conversion rate 450 mol h more than three times pure perovskites. Additionally, superior reduction capacity sustained after undergoing four cycles. Density Functional Thoery (DFT) simulations used explore 3D charge density at interface better understand electrical structure.

Language: Английский

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

Small, Journal Year: 2023, Volume and Issue: 20(17)

Published: Dec. 10, 2023

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

Language: Английский

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A Polymer Strategy toward High‐Performance Multifunctional Perovskite Optoelectronics: From Polymer Matrix to Device Applications

Advanced Optical Materials, Journal Year: 2023, Volume and Issue: 11(7)

Published: Feb. 3, 2023

Abstract Perovskites with superior photophysical properties and simple solution processing are widely applied in solar cells, light‐emitting diodes, photodetectors, lasers. However, the target of high‐performance multifunctional perovskite optoelectronics is hampered by their intrinsic properties, such as undesired crystallization rate, ease ion migration, poor stability, high brittleness. A perovskite–polymer matrix, including a composite polymer–perovskite–polymer heterostructure, adopted to handle above issues. This review starts categorized polymer addition methods relevant distribution for matrix. In addition, performance originating from controlled crystallization, stress regulation, inhibited defect passivation, reduced interfacial recombination, multifunctions enhanced mechanical robustness, self‐healing ability, controllable dimension, novel optical then summarized. Meanwhile, working mechanisms matrix also discussed. Finally, promising guidelines proposals provided promote commercialization optoelectronics.

Language: Английский

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Highly luminescent CsPbX3@MIL-53(Al) nanoarchitectonics with anomalous stability towards flexible emitting films

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 986, P. 174132 - 174132

Published: March 11, 2024

Language: Английский

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Metal/Covalent Organic Framework Encapsulated Lead-Free Halide Perovskite Hybrid Nanocatalysts: Multifunctional Applications, Design, Recent Trends, Challenges, and Prospects

ACS Omega, Journal Year: 2024, Volume and Issue: 9(32), P. 34220 - 34242

Published: Aug. 1, 2024

Perovskites are bringing revolutionization in a various fields due to their exceptional properties and crystalline structure. Most specifically, halide perovskites (HPs), lead-free (LFHPs), perovskite quantum dots (HPs QDs) becoming hotspots unique optoelectronic properties, low cost, simple processing. HPs QDs, particular, have excellent photovoltaic applications because of tunable emission, high photoluminescence yield (PLQY), effective charge separation, cost. However, practical the QDs family some limitations such as degradation, instability, deep trap states within bandgap, structural inflexibility, scalability, inconsistent reproducibility, environmental concerns, which can be covered by encapsulating into porous materials like metal–organic frameworks (MOFs) or covalent–organic (COFs) that offer protection, prevention aggregation, optical flexibility structure, enhanced biocompatibility, improved stability under harsh conditions, consistency production quality, efficient separation. These advantages MOFs-COFs help harness full potential for applications. This review mainly consists three parts. The first portion discusses perovskites, dots. In second portion, we explore MOFs COFs. third particular emphasis is given thorough evaluation development QDs@MOFs-COFs based comprehensive investigations next-generation intended diverse technological applications, CO2 conversion, pollutant hydrogen generation, batteries, gas sensing, solar cells. Finally, this will open new gateway synthesis perovskite-based

Language: Английский

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Managing potential environmental and human health risks of lead halide perovskite photovoltaic modules

Solar Energy, Journal Year: 2024, Volume and Issue: 269, P. 112337 - 112337

Published: Jan. 20, 2024

Language: Английский

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Advanced synthetic routes of metal organic frameworks and their diverse applications

Reviews in Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 44(4), P. 449 - 470

Published: April 15, 2024

Abstract Metal-organic frameworks (MOFs) are crystalline materials characterized by their porous structures, formed through coordination bonding between metal ions/clusters and multidentate organic linkers. MOFs have emerged as a significant class of with applications in energy storage, CO 2 adsorption, catalysis. This study serves brief introduction to the currently available synthesis methods MOFs, aimed at acquainting beginners field chemical engineering ongoing developments MOF research. The discussed encompass traditional solvothermal/hydrothermal approaches, microwave one-pot synthesis, nanocomposites, isothermal fluid-fluid synthesis. Notably, MOF/NH /Fe 3 O 4 combination exhibited enhanced adsorption capacity 618 mg/g retained an efficiency over 90 %. displays valuable technique for designing functional hybrid composites. By combining specific materials, numerous advantages can be achieved newly created compounds (MOF composites), including synergistic effects beneficial catalytic applications, overcoming challenges associated using bare MOFs.

Language: Английский

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Multiple Interpenetrating Metal–Organic Frameworks with Channel-Size-Dependent Behavior for Selective Gossypol Detection and Perovskite Quantum Dot Encapsulation

ACS Applied Materials & Interfaces, Journal Year: 2022, Volume and Issue: 14(44), P. 49945 - 49956

Published: Oct. 26, 2022

An interpenetrating structure endows metal-organic frameworks (MOFs) with many exciting applications, such as fluorescence detection and host-guest chemistry. Herein, two unique structure-interpenetrating In-MOFs (In-pdda-1 In-pdda-2; H2pdda = 4,4'-(pyridine-2,5-diyl)dibenzoic acid) are constructed by different coordination configurations. The four-connected In3+ center shows a triangular-pyramidal configuration or 2D rectangle, forming an unc topology for In-pdda-1 sql network In-pdda-2, respectively. Two modes created linear rigid ligands metal clusters observed in the MOFs (In-pdda-1, 8-fold mode; [2D + 2D] mode), which determine channel-size-dependent properties applications. During quantitative process of gossypol, small rhombic channels divided molecular planes In-pdda-2 greatly limit distance between analyte probe, promoting electron transfer energy processes thus resulting low (28.6 nM). In addition, pore size effect encouraged us to explore situ perovskite quantum dot encapsulation strategy obtain MAPbBr3@MOF material tunable stable luminescence properties. Both above may provide inspiration structural design specialized applications MOF materials.

Language: Английский

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