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Semiconductor meta-surface based perfect light absorber

机译：半导体元表面的完美光吸收器

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摘要

We numerically proposed and demonstrated a semiconductor meta-surface light absorber, which consists of a silicon patches array on a silicon thin-film and an opaque silver substrate. The Mie resonances of the silicon patches and the fundamental cavity mode of the ultra-thin silicon film couple strongly to the incident optical field, leading to a multi-band perfect absorption. The maximal absorption is above 99.5% and the absorption is polarization-independent. Moreover, the absorption behavior is scalable in the frequency region via tuning the structural parameters. These features hold the absorber platform with wide applications in optoelectronics such as hotelectron excitation and photo-detection.
机译：我们在数值上提出和证明了半导体元表面光吸收器，其包括在硅薄膜和不透明的银基底上的硅贴片阵列。 硅贴片的MIE谐振和超薄硅膜的基本腔模式强烈到入射光场，导致多频带完美吸收。 最大吸收量高于99.5％，吸收是偏振无关的。 此外，通过调整结构参数，吸收行为在频率区域中可伸缩。 这些特性保持了吸收器平台，具有广泛应用的光电子应用，如酒店Extron激励和光检测。

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  • 来源
    《Nanotechnology》 |2017年第16期|共7页
  • 作者

    Liu Guiqiang; Nie Yiyou; Fu Guolan; Liu Xiaoshan; Liu Yi; Tang Li; Liu Zhengqi;

  • 作者单位

    Jiangxi Normal Univ Coll Phys &

    Commun Elect Jiangxi Key Lab Nanomat &

    Sensors Nanchang 330022 Jiangxi Peoples R China;

    Jiangxi Normal Univ Coll Phys &

    Commun Elect Jiangxi Key Lab Nanomat &

    Sensors Nanchang 330022 Jiangxi Peoples R China;

    Jiangxi Normal Univ Coll Phys &

    Commun Elect Jiangxi Key Lab Nanomat &

    Sensors Nanchang 330022 Jiangxi Peoples R China;

    Jiangxi Normal Univ Coll Phys &

    Commun Elect Jiangxi Key Lab Nanomat &

    Sensors Nanchang 330022 Jiangxi Peoples R China;

    Jiangxi Normal Univ Coll Phys &

    Commun Elect Jiangxi Key Lab Nanomat &

    Sensors Nanchang 330022 Jiangxi Peoples R China;

    Jiangxi Normal Univ Coll Phys &

    Commun Elect Jiangxi Key Lab Nanomat &

    Sensors Nanchang 330022 Jiangxi Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 特种结构材料;
  • 关键词

    semiconductor meta-surface; light absorber; Mie resonance; optoelectronics;

    机译：半导体元表面;光吸收;MIE共振;光电子;

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