Electrically Tunable Exciton and Telecom-Band Light-Emitting Diodes in Few-Layer Phosphorene.

IF 15.8 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

ACS Nano Pub Date : 2025-07-05 DOI:10.1021/acsnano.5c02908

Yaning Liang,Jiexi Song,Fengyuan Xuan,Siyuan Wang,Junrong Zhang,Dong Wang,Yun Yao,Cheng Chen,Xiangyi Wang,Yuan Gan,Tianhua Ren,Juanjuan Xing,Junyong Wang,Kai Zhang

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引用次数: 0

Abstract

Two-dimensional (2D) semiconductors with direct band gaps offer opportunities for constructing ultrathin and compactly integrated light-emitting diodes (LEDs). Current LEDs based on 2D semiconductors mostly work in the visible light spectrum rather than the near-infrared telecommunication band, hindering their incorporation into established applications such as optical computing and communication. In this study, we report on the LED from the bilayer and trilayer phosphorene in the near-infrared regime leveraging the direct bandgap nature of black phosphorus (BP). The layer-number-sensitive electrical field regulation characteristics of bright excitons in bilayer and trilayer phosphorene were revealed. Moreover, the dominating exciton types and emission wavelengths were demonstrated to be dynamically regulated from a single trilayer phosphorene-based LED near 1500 nm by judiciously controlling the electric field and carrier injection conditions. The findings suggest the potential application of 2D semiconductors in miniaturized light source devices operating in the near-infrared telecommunication band.

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电可调谐激子和电信带发光二极管在少层磷光烯。

具有直接带隙的二维（2D）半导体为构建超薄和紧凑集成的发光二极管（led）提供了机会。目前基于二维半导体的led大多工作在可见光光谱，而不是近红外通信波段，这阻碍了它们融入光学计算和通信等既定应用。在这项研究中，我们报道了利用黑磷（BP）的直接带隙特性，在近红外波段利用双层和三层磷烯发光二极管。揭示了双层和三层磷烯中亮激子的层数敏感电场调节特性。此外，通过合理控制电场和载流子注入条件，证明了在1500 nm附近，三层磷光烯基LED的主导激子类型和发射波长是动态调节的。研究结果表明，二维半导体在近红外通信波段的小型化光源器件中具有潜在的应用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Nano 工程技术-材料科学：综合

CiteScore

26.00

自引率

4.10%

发文量

1627

审稿时长

1.7 months

期刊介绍： ACS Nano, published monthly, serves as an international forum for comprehensive articles on nanoscience and nanotechnology research at the intersections of chemistry, biology, materials science, physics, and engineering. The journal fosters communication among scientists in these communities, facilitating collaboration, new research opportunities, and advancements through discoveries. ACS Nano covers synthesis, assembly, characterization, theory, and simulation of nanostructures, nanobiotechnology, nanofabrication, methods and tools for nanoscience and nanotechnology, and self- and directed-assembly. Alongside original research articles, it offers thorough reviews, perspectives on cutting-edge research, and discussions envisioning the future of nanoscience and nanotechnology.