Rapid Room Temperature Entropy‐Stabilized Synthesis Enabling Super‐Stable Metal Halide Perovskite Semiconductor Colloidal Nanocrystals

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 12, 2025

Abstract Although high‐entropy materials have garnered extensive attention due to their substantially enhanced performance, formation generally demands prolonged high‐temperature synthetic processes. Moreover, research on entropy‐stabilized halide perovskite (ESHP) semiconductor colloidal nanocrystals (NCs) is scarce. Herein, a highly efficient and rapid room temperature (RT) approach in air proposed, involving the concurrent incorporation of multi‐metal cations for synthesis high‐quality all‐inorganic ESHP NCs with near‐unity quantum yield excellent stability. Remarkably, even after 8 months aging air, exhibited superior emission characteristics single‐exponential decay maintained initial NC monodispersity. Density functional theory calculations further demonstrated that outstanding performance originated from diminished crystal defects more robust octahedral structure. Significantly, this RT entropy‐driven can be extended metal diverse composition systems. The findings inspire new perspectives entropy‐stabilized, high‐performance toward versatile applications.

Language: Английский

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Research Progress on Quantum Dot-Embedded Polymer Films and Plates for LCD Backlight Display

Polymers, Journal Year: 2025, Volume and Issue: 17(2), P. 233 - 233

Published: Jan. 17, 2025

Abstract: Quantum dot–polymer composites have the advantages of high luminescent quantum yield (PLQY), narrow emission half-peak full width (FWHM), and tunable spectra, broad application prospects in display lighting fields. Research on dots embedded polymer films plates has made great progress both synthesis technology optical properties. However, due to shortcomings dots, such as cadmium selenide (CdSe), indium phosphide (InP), lead halide perovskite (LHP), poor water, oxygen, light stability, incapacity for large-scale synthesis, their practical is still restricted. Various polymers, methyl methacrylate (PMMA), polyethylene terephthalate (PET), polystyrene (PS), polyvinylidene fluoride (PVDF), polypropylene (PP), etc., are widely used packaging dot materials because plasticity, simple curing, chemical good compatibility with materials. This paper focuses development field backlight displays, summarizes expounds strategies, advantages, disadvantages different materials, provides inspiration optimization promotes wide-color-gamut display.

Language: Английский

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Achieving High Blue Light Excited Quantum Efficiency in CsPbBr3 Quantum Dots through SiO2-Modified Glass Network Structure for Wide Color Gamut Displays

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 178755 - 178755

Published: Jan. 1, 2025

Language: Английский

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Multilevel and Flexible Physical Unclonable Functions for High‐End Leather Products or Packaging

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

Published: Nov. 25, 2024

Counterfeit and substandard high-end leather products have inflicted substantial economic damage worldwide tarnished the reputation of industry as a whole. Due to limited security level, current anti-counterfeiting measures are often vulnerable attacks. Physically unclonable function (PUF) is regarded pinnacle protection against counterfeiting. Leather, with distinctive micro-nano porous structure random creasing patterns, serves an ideal substrate for optical PUF. Here, flexible durable leather-based PUF device introduced that incorporates fluorescent perovskite quantum dots. The fluorescence intensity distributed along texture offers parametric support challenge-response pairs. Combined self-defined pattern, hierarchical authentication realized. In conclusion, this innovation desired opportunity achieving high-security information traceability.

Language: Английский

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Tuning electronic structure and carrier transport properties through crystal orientation control in two-dimensional Dion-Jacobson phase perovskites

Nano Convergence, Journal Year: 2025, Volume and Issue: 12(1)

Published: Jan. 13, 2025

Abstract Two-dimensional halide perovskites are attracting attention due to their structural diversity, improved stability, and enhanced quantum efficiency compared three-dimensional counterparts. In particular, Dion-Jacobson (DJ) phase exhibit superior stability Ruddlesden-Popper perovskites. The inherent well structure of layered leads highly anisotropic charge transport optical properties. Therefore, controlling the preferred crystal orientation (parallel or perpendicular) is crucial for optimizing device performance. This work presents a rational strategy control parallel perpendicular growth in C 6 N 2 H 16 PbI 4 (4AMPPbI )-based DJ perovskite thin films. We demonstrate that depends on rates, which can be controlled by varying solvent composition, antisolvent, annealing temperature. Direct inverse photoelectron spectroscopy reveals electronic 4AMPPbI , including its function, ionization energy, electron affinity, orientation-dependent. Different orientations significantly affect carrier as confirmed single-carrier devices. study highlights critical role designing high-performance optoelectronic Graphical

Language: Английский

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Ultra-stable MAPbBr3@ZIF-8-based fluorescent aptasensor for highly sensitive and specific detection of azlocillin in food

Food Bioscience, Journal Year: 2025, Volume and Issue: unknown, P. 105920 - 105920

Published: Jan. 1, 2025

Language: Английский

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Dual-emission and enhanced stable nanocomposites by encapsulating CsPbBr3 quantum dots in mesoporous GdF3:Eu3+ spheres for LED applications

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 179795 - 179795

Published: March 1, 2025

Language: Английский

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Perovskite quantum dots Revolutionize Lithium-Sulfur battery Performance: Cathode catalytic Breakthrough with CsPbBr3

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161970 - 161970

Published: March 1, 2025

Language: Английский

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Engineered Quantum Dot Solar Cells: From Fundamentals to Applications

Plasmonics, Journal Year: 2025, Volume and Issue: unknown

Published: March 27, 2025

Language: Английский

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Air-Processed Perovskites Enabled by an Interface-Reconstruction Strategy for High-Performance Light-Emitting Diodes

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

Fabricating high-performance perovskites in ambient air is desirable for low-cost and large-scale patterned manufacture of light-emitting diodes (LEDs). However, inherently exhibit high sensitivity to moisture oxygen, which considerably hinders their fabrication under conditions. Here, we demonstrated an interface-reconstruction strategy enabled air-processed CsPbI3 quantum dot (QD) films LEDs. Ethyl acetate/tris(1-naphthyl)phosphine oxide (EA/TNPO) treatment was used polish passivate the interface between QD film electron transport layer, thereby providing a protective coating against oxygen. We fabricated LEDs based on spin-coated films, achieving maximum external efficiency (EQE) 20.2% long half-life over 100 days. also inkjet-printed highlighting practical application potential patterning techniques. Our work develops high-quality perovskite demonstrates great prospect optoelectronic devices future.

Language: Английский

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