Cutting-edge innovations in red carbon dots: Synthesis, perfection, and breakthroughs in optoelectronics and electrocatalysis

Chemical Engineering Journal, Год журнала: 2024, Номер 498, С. 155302 - 155302

Опубликована: Авг. 29, 2024

Язык: Английский

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Carbon quantum dots: A systematic overview of recent developments in synthesis, properties, and novel therapeutic applications

Inorganic Chemistry Communications, Год журнала: 2024, Номер 165, С. 112492 - 112492

Опубликована: Май 9, 2024

Язык: Английский

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Highly Efficient Luminescent Solar Concentrators Based on Capped Carbon Quantum Dots with Unity Quantum Yield

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 12, 2025

Abstract Luminescent solar concentrators (LSCs) can convert sunlight to clean energy by serving as large‐area collectors of sunlight. Benefiting from their large‐area, semi‐transparency, and lightweight characteristics, LSCs have gained a great attention. However, optical efficiency is limited the low quantum yield (QY) small Stokes shift conventional photoluminescent materials. Carbon dots (C‐dots) are promising alternatives, yet achieving both high QY large has proven challenging. Here, simple, controllable vacuum heating method introduced synthesize highly efficient C‐dots using citric acid‐urea‐cyanuric acid‐CaCl 2 system. The cyanuric acid‐capped exhibit outstanding properties, including 94.3% in solution 100% polymer matrix, 0.64 eV, exceptional photostability, making them ideal for LSC applications. Ultrafast transient absorption spectroscopy provides insights into exciton dynamics. An (25 cm ) based on these achieves an 13.82% ± 0.30%, while its attached photovoltaic cell attains power conversion 4.82% 0.10% under natural (80 mW −2 ), marking highest performance reported C‐dot‐based LSCs. These results highlight potential advanced solid‐state lighting technologies.

Язык: Английский

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Efficient Time‐dependent Dual‐Model Room Temperature Phosphorescent Carbon Quantum Dots/ Boron Nitride Carbide Oxide Matrices

Advanced Optical Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 8, 2025

Abstract Room temperature phosphorescence (RTP) materials have broad applications in the field of optical devices due to tunable wavelengths and lifetimes. However, creating efficient RTP that possess multiple properties remains a challenge. Herein, novel approach is developed situ form carbon quantum dots (C‐dots) embedded boron nitride carbide oxide (B‐N‐C‐O) matrices by introducing nitrogen, phosphorus, dopants into C‐dots (P/B/N doped C‐dots), enabling dual emissions time‐dependent afterglow. P/B/N are synthesized vacuum‐assisted gradient heating using ethylenediamine, phosphoric acid, boric acid as precursors with yield 20 g per batch. The introduction provided triplet states, which enable and, long phosphorescent lifetime ranging from 0.98 1.30 s. formation surrounding enables ultrahigh up 50%, surpassing most recently reported C‐dots. To demonstrate potential C‐dots, they used anti‐counterfeiting ink dyes for security codes polyester yarn, showing their suitability high‐level applications. This work provides an effective route large‐scale synthesis highly preparation high‐performance devices.

Язык: Английский

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Full-color room-temperature phosphorescent carbon dots with ultrahigh quantum yield via conjugation regulation

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 159246 - 159246

Опубликована: Янв. 1, 2025

Язык: Английский

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A new type of core-shell nanowire array structured quantum dot-composite perovskite solar cell with near full-spectrum absorption

Physica E Low-dimensional Systems and Nanostructures, Год журнала: 2024, Номер 160, С. 115937 - 115937

Опубликована: Фев. 27, 2024

Язык: Английский

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Metal-organic framework (MOF)/C-dots and covalent organic framework (COF)/C-dots hybrid nanocomposites: Fabrications and applications in sensing, medical, environmental, and energy sectors

Advances in Colloid and Interface Science, Год журнала: 2024, Номер 328, С. 103178 - 103178

Опубликована: Май 8, 2024

Язык: Английский

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Highly Transparent, Spectrally Selective Power-Generating Windows Based on WO_3–x Nanorods and Carbon Dots for Full-Spectrum Utilization

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Фев. 2, 2025

Near-infrared (NIR) shielding windows can selectively regulate excess solar radiation to reduce heating and cooling energy consumption in a built environment. However, the dissipation of ultraviolet (UV) visible light into waste heat is inevitable, leading inefficient utilization. Herein, tandem spectrally selective power-generating (SSPG) window developed by incorporating oxygen-deficient tungsten oxide WO3-x nanorod-based NIR red-emissive carbon dot-based luminescent concentrators (LSCs) realize full-spectrum Semitransparent modules absorb indoor thermal radiation, while semitransparent LSC coupled with photovoltaic system converts UV partially electricity. The SSPG exhibits transmittance up 70.44% power conversion efficiency 0.31%, effectively reducing temperature 7 °C under sunlight irradiation. In addition, this has good thermal-/photostability excellent performance after treatment This work may provide new avenue for development energy-saving windows.

Язык: Английский

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Green color luminescent carbon dots for stability flexible composite sheet and mercury ion detection application

Materials Today Chemistry, Год журнала: 2025, Номер 44, С. 102555 - 102555

Опубликована: Фев. 4, 2025

Язык: Английский

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Solar Window Innovations: Enhancing Building Performance through Advanced Technologies

Energies, Год журнала: 2024, Номер 17(14), С. 3369 - 3369

Опубликована: Июль 9, 2024

Building-integrated photovoltaic (BIPV) glazing systems with intelligent window technologies enhance building energy efficiency by generating electricity and managing daylighting. This study explores advanced BIPV glazing, focusing on building-integrated concentrating (BICPV) systems. BICPV integrates optics, such as holographic films, luminescent solar concentrators (LSC), Fresnel lenses, compound parabolic (CPCs), cells. Notable results include achieving 17.9% electrical using cylindrical optical elements crystalline silicon cells at a 3.5× concentration ratio. Dielectric CPCs showed 97.7% angular acceptance in simulations 94.4% experimentally, increasing short-circuit current maximum power 87.0% 96.6%, respectively, across 0° to 85° incidence angles. Thermochromic hydrogels thermotropic smart demonstrated significant HVAC savings. Large-area 1 m2 PNIPAm-based outperformed conventional double Singapore. The parallel slat transparent insulation material (TT PS-TIM) improved up 21.5% compared climates like London Rome. Emerging dynamic combine functions, balancing transparency efficiency. Photothermally controlled methylammonium lead iodide PV windows achieved 68% visible light transmission, 11.3% conversion efficiency, quick switching under 3 min. Polymer-dispersed liquid crystal provided 41–68% transmission self-powered operation.

Язык: Английский

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