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

Chen, Mingying; Ma, Junjie; Chen, Congjin; Ding, Junyang; Liu, Yifan; He, Huibing; Liu, Qian; Hu, Guangzhi; Wu, Yinghong; Liu, Xijun

doi:10.1016/j.cej.2024.155302

Chemical Engineering Journal

2024

DOI: 10.1016/j.cej.2024.155302

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

Mingying Chen,

Junjie Ma,

Congjin Chen

et al.

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Cited by 9 publications

References 204 publications

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Single Solid‐State Emissive Carbon Quantum Dots for Multicolor, Bright and Efficient Electroluminescent Light‐Emitting Diodes

Li,

Teng

et al. 2024

Angewandte Chemie

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Color‐tunable electroluminescent light‐emitting diodes (LEDs) based on quantum dots (QDs) are rapidly emerging as a key technology for next‐generation full‐color displays and solid‐state lighting. However, achieving broad color tunability in LEDs that utilize a single QD emissive material continues to pose significant challenges. Here, we present the first example of bright, multicolor electroluminescent LEDs with tunable emission peaks spanning from 535 to 640 nm, utilizing a new type of single red solid‐state emissive carbon quantum dots (R‐SSCQDs). Unlike conventional CQDs, which often exhibit weak or negligible emission in solid‐state form, R‐SSCQDs demonstrate bright red emission in solid state and green emission in diluted state. Experimental investigations and theoretical calculations reveal that the unique non‐planar spatial structure and significant steric hindrance of R‐SSCQDs effectively suppress π‐π stacking, resulting in efficient solid‐state fluorescence emission. By adjusting the weight ratios of R‐SSCQDs doped in host materials, we showcase bright, efficient and multicolor CQD‐based LEDs that emit green, yellow, orange, and red light, achieving a record‐high luminance of 15,834 cd m‐2 and current efficiency of 10.3 cd A‐1. This work presents a straightforward and universal strategy for creating efficient solid‐state emissive CQDs, showcasing significant potential for color‐tunable LED applications.

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Single Solid‐State Emissive Carbon Quantum Dots for Multicolor, Bright and Efficient Electroluminescent Light‐Emitting Diodes

Li,

Teng

et al. 2024

Angewandte Chemie

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Single Solid‐State Emissive Carbon Quantum Dots for Multicolor, Bright and Efficient Electroluminescent Light‐Emitting Diodes

Li,

Teng

et al. 2024

Angew Chem Int Ed

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Advancing aqueous zinc‐ion batteries with carbon dots: A comprehensive review

Chen,

Ma,

Feng

et al. 2024

EcoEnergy

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Recent years have witnessed a surge in research on aqueous zinc‐ion batteries (AZIBs) due to their low cost, stability, and exceptional electrochemical performance, among other advantages. However, practical manufacturing and deployment of AZIBs have been hindered by challenges such as low energy density, significant precipitation‐related side reactions, slow ion migration, and dendritic growth. Addressing these issues and enhancing the practical application of AZIBs necessitates the development of novel materials. Carbon dots (CDs), with their distinctive structure and superior electrochemical properties, represent an innovative class of carbon‐based materials with broad potential applications for optimizing AZIBs' performance. This study offers a comprehensive review of how CDs can address the aforementioned challenges of AZIBs. It begins with an overview of AZIBs composition and mechanism before delving into the classification, preparation techniques, and functionalization strategies of CDs. The review also thoroughly summarizes the sophisticated roles of CDs as modifiers in electrolytes and electrodes, both positive and negative, and briefly discusses their potential application in membranes. Additionally, it provides a summary of current issues and difficulties encountered in utilizing CDs in AZIBs. This review aims to provide insights and guidance for designing and manufacturing the next generation of high‐performance AZIBs.

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

Cited by 9 publications

References 204 publications

Single Solid‐State Emissive Carbon Quantum Dots for Multicolor, Bright and Efficient Electroluminescent Light‐Emitting Diodes

Single Solid‐State Emissive Carbon Quantum Dots for Multicolor, Bright and Efficient Electroluminescent Light‐Emitting Diodes

Single Solid‐State Emissive Carbon Quantum Dots for Multicolor, Bright and Efficient Electroluminescent Light‐Emitting Diodes

Advancing aqueous zinc‐ion batteries with carbon dots: A comprehensive review

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