Ultra-broadband and tunable infrared absorber based on VO2 hybrid multi-layer nanostructure

IF 1.9 4区物理与天体物理 Q3 OPTICS Journal of the European Optical Society-Rapid Publications Pub Date : 2022-12-07 DOI:10.1051/jeos/2022017

Junyi Yan, Yi Li, Mengdi Zou, Jincheng Mei, J. Zhuang, Xingping Wang, Xin Zhang, Yuda Wu, Chuang Peng, Wenyan Dai, Zhen Yuan, Ke Lin

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Abstract

We propose an ultra-broadband near- to mid-infrared (NMIR) tunable absorber based on VO2 hybrid multi-layer nanostructure by hybrid integration of the upper and the lower parts. The upper part is composed of VO2 nano cylindrical arrays prepared on the front illuminated surface of quartz substrate, and VO2 square films and VO2/SiO2/VO2 square nanopillar arrays prepared on the back surface. The lower part is an array of SiO2/Ti/VO2 nanopillars on Ti substrate. The effects of different structural parameters and temperature on the absorption spectra were analyzed by the finite-difference time-domain method. An average absorption rate of up to 94.7% and an ultra-wide bandwidth of 6.5 μm were achieved in NMIR 1.5-8 μm. Neither vertical incident light with different polarization angles nor large inclination incident light has a significant effect on the absorption performance of the absorber. The ultra-broadband high absorption performance of this absorber will be widely used in NMIR photodetectors and other new optoelectronic devices.

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基于VO2杂化多层纳米结构的超宽带可调谐红外吸收体

我们提出了一种基于VO2混合多层纳米结构的超宽带近中红外(NMIR)可调谐吸收器，其上下部分混合集成。上半部分由石英衬底前照射表面制备的VO2纳米圆柱阵列和背面制备的VO2方形薄膜和VO2/SiO2/VO2方形纳米柱阵列组成。下图为Ti衬底上的SiO2/Ti/VO2纳米柱阵列。采用时域有限差分法分析了不同结构参数和温度对吸收光谱的影响。在1.5 ~ 8 μm的NMIR中，平均吸收率高达94.7%，超宽带宽为6.5 μm。不同偏振角的垂直入射光和大倾角入射光对吸收器的吸收性能都没有显著影响。该吸收体的超宽带高吸收性能将广泛应用于NMIR光电探测器和其他新型光电器件中。

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来源期刊

Journal of the European Optical Society-Rapid Publications 物理-光学

CiteScore

2.40

自引率

0.00%

发文量

审稿时长

5 weeks

期刊介绍： Rapid progress in optics and photonics has broadened its application enormously into many branches, including information and communication technology, security, sensing, bio- and medical sciences, healthcare and chemistry. Recent achievements in other sciences have allowed continual discovery of new natural mysteries and formulation of challenging goals for optics that require further development of modern concepts and running fundamental research. The Journal of the European Optical Society – Rapid Publications (JEOS:RP) aims to tackle all of the aforementioned points in the form of prompt, scientific, high-quality communications that report on the latest findings. It presents emerging technologies and outlining strategic goals in optics and photonics. The journal covers both fundamental and applied topics, including but not limited to: Classical and quantum optics Light/matter interaction Optical communication Micro- and nanooptics Nonlinear optical phenomena Optical materials Optical metrology Optical spectroscopy Colour research Nano and metamaterials Modern photonics technology Optical engineering, design and instrumentation Optical applications in bio-physics and medicine Interdisciplinary fields using photonics, such as in energy, climate change and cultural heritage The journal aims to provide readers with recent and important achievements in optics/photonics and, as its name suggests, it strives for the shortest possible publication time.