用于自供电、高速和宽带光电探测器的石墨烯/WS2/LaVO3 异质结

IF 2.4 4区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Current Applied Physics Pub Date : 2024-11-23 DOI:10.1016/j.cap.2024.11.014

Dong Hee Shin , Hosun Lee

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引用次数: 0

摘要

最近，由于二维异质结构具有独特的光电特性，人们开始关注利用二维异质结构开发高性能自驱动光电探测器（PD）。在这里，我们证明了基于石墨烯（Gr）透明导电电极、n 型二维 WS2 和 p 型 LaVO3 的垂直异质结构可实现波长范围为 300-850 nm 的宽带响应型 PD。由于在 WS2/LaVO3 界面形成的电场和光生伏打效应，这种结构显示出整流操作，在零偏压下的最大检测率为 2.1 × 1010 琼斯。此外，它还具有 435 μs 的快速下降时间和 2300 Hz 的 3 dB 带宽，适合高速自供电光电应用。因此，TETA-Gr/WS2/LaVO3 异质结被认为是高性能、自供电和宽带 PD 的理想候选材料。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Graphene/WS2/LaVO3 heterojunction for self-powered, high-speed, and broadband photodetectors

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Graphene/WS2/LaVO3 heterojunction for self-powered, high-speed, and broadband photodetectors

Recently, there has been interest in developing high-performance self-driven photodetectors (PDs) using 2D-based heterostructures due to their unique optoelectronic properties. Here, we demonstrate that vertical-heterostructures based on graphene (Gr) transparent conductive electrodes, n-type 2D WS₂, and p-type LaVO₃ realize a broadband-responsive PD covering the wavelength range of 300–850 nm. Due to the formation of an electric field at the WS₂/LaVO₃ interface and the photovoltaic effect, this structure shows a rectifying operation with a maximum detectivity of 2.1 × 10¹⁰ Jones at zero bias. Additionally, it exhibits a fast fall time of 435 μs and a 3 dB bandwidth of 2300 Hz, making it suitable for high-speed self-powered optoelectronic applications. Therefore, the TETA-Gr/WS₂/LaVO₃ heterojunction is proposed as an excellent candidate for high-performance, self-powered, and broadband PDs.

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来源期刊

Current Applied Physics 物理-材料科学：综合

CiteScore

4.80

自引率

0.00%

发文量

213

审稿时长

33 days

期刊介绍： Current Applied Physics (Curr. Appl. Phys.) is a monthly published international journal covering all the fields of applied science investigating the physics of the advanced materials for future applications. Other areas covered: Experimental and theoretical aspects of advanced materials and devices dealing with synthesis or structural chemistry, physical and electronic properties, photonics, engineering applications, and uniquely pertinent measurement or analytical techniques. Current Applied Physics, published since 2001, covers physics, chemistry and materials science, including bio-materials, with their engineering aspects. It is a truly interdisciplinary journal opening a forum for scientists of all related fields, a unique point of the journal discriminating it from other worldwide and/or Pacific Rim applied physics journals. Regular research papers, letters and review articles with contents meeting the scope of the journal will be considered for publication after peer review. The Journal is owned by the Korean Physical Society.