基于光捕获工程的高效环保型宽带 GeSn/SnS 光电探测器设计框架

IF 3.3 4区 物理与天体物理 Q2 CHEMISTRY, PHYSICAL
H. Ferhati, F. Djeffal
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引用次数: 0

摘要

自供电光电探测器设备的多光谱光响应特性正迅速成为解决新兴多功能光电系统扩展难题的关键技术。不同材料的异质结构为利用单一器件设计宽带自驱动光响应开辟了新的途径。本研究提出了一种基于 SnS/GeSn 异质结构和优化金纳米粒子的新型多光谱光电探测器。此外,通过使用基于粒子群优化方法和等离子效应耦合的新设计框架,宽带光电探测器的性能得到了提高。基于有限差分时域法的数值模型得以实现。采用优化表面金纳米粒子的单个 SnS/GeSn 异质结构光电探测器实现了宽带光电探测,具有 160 dB 的高导通/关断比,响应率提高到 8.5 A/W,自供电模式下的比探测率超过 5 × 1012 Jones。因此,基于 SnS/GeSn 异质结构与优化的金纳米粒子阵列之间的策略性结合而提出的设计框架,为利用光捕获工程与带隙调谐相结合的方法来提高宽带光电探测器的光电性能提供了新的途径和有效的策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

A Framework for Designing Efficient Eco-Friendly Broadband GeSn/SnS Photodetector Based on Light Trapping Engineering

A Framework for Designing Efficient Eco-Friendly Broadband GeSn/SnS Photodetector Based on Light Trapping Engineering

A multispectral photoresponse feature of a self-powered photodetector device is quickly becoming a key technology to address the scaling challenges in emerging multifunctional optoelectronic systems. The heterostructure of different materials has opened new pathways to design broadband self-driven photoresponse using a single device. In this work, a new multispectral photodetector based on SnS/GeSn heterostructure with optimized gold nanoparticles is proposed. Moreover, broadband photodetector performances are improved by using a new design framework based on coupling particle swarm optimization approach and plasmonic effects. Numerical models based on the finite difference time domain method are carried out. A broadband photodetection is achieved in a single SnS/GeSn heterostructured photodetector with optimized surface gold nanoparticles, with a high on/off ratio of 160 dB, improved responsivity of 8.5 A/W and specific detectivity of over 5 × 1012 Jones in the self-powered mode. Therefore, the proposed design framework based on the strategic combination between SnS/GeSn heterostructure and optimized gold nanoparticles array provides new paths and efficient strategy to enhance the optoelectronic performance of broadband photodetectors by exploiting the light trapping engineering combined with band-gap tuning aspects.

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来源期刊
Plasmonics
Plasmonics 工程技术-材料科学:综合
CiteScore
5.90
自引率
6.70%
发文量
164
审稿时长
2.1 months
期刊介绍: Plasmonics is an international forum for the publication of peer-reviewed leading-edge original articles that both advance and report our knowledge base and practice of the interactions of free-metal electrons, Plasmons. Topics covered include notable advances in the theory, Physics, and applications of surface plasmons in metals, to the rapidly emerging areas of nanotechnology, biophotonics, sensing, biochemistry and medicine. Topics, including the theory, synthesis and optical properties of noble metal nanostructures, patterned surfaces or materials, continuous or grated surfaces, devices, or wires for their multifarious applications are particularly welcome. Typical applications might include but are not limited to, surface enhanced spectroscopic properties, such as Raman scattering or fluorescence, as well developments in techniques such as surface plasmon resonance and near-field scanning optical microscopy.
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