Issue 17, 2024

Progress of charge carrier dynamics and regulation strategies in 2D CxNy-based heterojunctions

Abstract

Two-dimensional carbon nitrides (CxNy) have gained significant attention in various fields including hydrogen energy development, environmental remediation, optoelectronic devices, and energy storage owing to their extensive surface area, abundant raw materials, high chemical stability, and distinctive physical and chemical characteristics. One effective approach to address the challenges of limited visible light utilization and elevated carrier recombination rates is to establish heterojunctions for CxNy-based single materials (e.g. C2N3, g-C3N4, C3N4, C4N3, C2N, and C3N). The carrier generation, migration, and recombination of heterojunctions with different band alignments have been analyzed starting from the application of CxNy with metal oxides, transition metal sulfides (selenides), conductive carbon, and CxNy heterojunctions. Additionally, we have explored diverse strategies to enhance heterojunction performance from the perspective of carrier dynamics. In conclusion, we present some overarching observations and insights into the challenges and opportunities associated with the development of advanced CxNy-based heterojunctions.

Graphical abstract: Progress of charge carrier dynamics and regulation strategies in 2D CxNy-based heterojunctions

Article information

Article type
Highlight
Submitted
07 Dec 2023
Accepted
29 Jan 2024
First published
31 Jan 2024

Chem. Commun., 2024,60, 2283-2300

Progress of charge carrier dynamics and regulation strategies in 2D CxNy-based heterojunctions

X. Yuan, X. Hu, Q. Lin and S. Zhang, Chem. Commun., 2024, 60, 2283 DOI: 10.1039/D3CC05976F

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