中国物理B ›› 2021, Vol. 30 ›› Issue (11): 114201-114201.doi: 10.1088/1674-1056/abf91e

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Solar broadband metamaterial perfect absorber based on dielectric resonant structure of Ge cone array and InAs film

Kuang-Ling Guo(郭匡灵), Hou-Hong Chen(陈厚宏), Xiao-Ming Huang(黄晓明), Tian-Hui Hu(胡天惠), and Hai-Ying Liu(刘海英)   

  1. Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School for Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China
  • 收稿日期:2021-02-24 修回日期:2021-04-14 接受日期:2021-04-19 出版日期:2021-10-13 发布日期:2021-11-03
  • 通讯作者: Hai-Ying Liu E-mail:hyliu@scnu.edu.cn
  • 基金资助:
    Project supported by the Natural Science Foundation of Guangdong Province, China (Grant No. 2018A030313854) and the Science and Technology Program of Guangzhou City, China (Grant No. 2019050001).

Solar broadband metamaterial perfect absorber based on dielectric resonant structure of Ge cone array and InAs film

Kuang-Ling Guo(郭匡灵), Hou-Hong Chen(陈厚宏), Xiao-Ming Huang(黄晓明), Tian-Hui Hu(胡天惠), and Hai-Ying Liu(刘海英)   

  1. Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School for Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China
  • Received:2021-02-24 Revised:2021-04-14 Accepted:2021-04-19 Online:2021-10-13 Published:2021-11-03
  • Contact: Hai-Ying Liu E-mail:hyliu@scnu.edu.cn
  • Supported by:
    Project supported by the Natural Science Foundation of Guangdong Province, China (Grant No. 2018A030313854) and the Science and Technology Program of Guangzhou City, China (Grant No. 2019050001).

摘要: The broadband metamaterial perfect absorber has been extensively studied due to its excellent characteristics and promising application prospect. In this work a solar broadband metamaterial perfect absorber is proposed based on the structure of the germanium (Ge) cone array and the indium arsenide (InAs) dielectric film on the gold (Au) substrate. The results show that the absorption covers the whole ultraviolet-visible and near-infrared range. For the case of A > 99%, the absorption bandwidth reaches up to 1230 nm with a wavelength range varied from 200 nm to 1430 nm. The proposed absorber is able to absorb more than 98.7% of the solar energy in a solar spectrum from 200 nm to 3000 nm. The electromagnetic dipole resonance and the high-order modes of the Ge cone couple strongly to the incident optical field, which introduces a strong coupling with the solar radiation and produces an ultra-broadband absorption. The absorption spectrum can be feasibly manipulated via tuning the structural parameters, and the polarization insensitivity performance is particularly excellent. The proposed absorber can possess wide applications in active photoelectric effects, thermion modulators, and photoelectric detectors.

关键词: metamaterial, electromagnetic resonance, perfect absorber, solar broadband absorption

Abstract: The broadband metamaterial perfect absorber has been extensively studied due to its excellent characteristics and promising application prospect. In this work a solar broadband metamaterial perfect absorber is proposed based on the structure of the germanium (Ge) cone array and the indium arsenide (InAs) dielectric film on the gold (Au) substrate. The results show that the absorption covers the whole ultraviolet-visible and near-infrared range. For the case of A > 99%, the absorption bandwidth reaches up to 1230 nm with a wavelength range varied from 200 nm to 1430 nm. The proposed absorber is able to absorb more than 98.7% of the solar energy in a solar spectrum from 200 nm to 3000 nm. The electromagnetic dipole resonance and the high-order modes of the Ge cone couple strongly to the incident optical field, which introduces a strong coupling with the solar radiation and produces an ultra-broadband absorption. The absorption spectrum can be feasibly manipulated via tuning the structural parameters, and the polarization insensitivity performance is particularly excellent. The proposed absorber can possess wide applications in active photoelectric effects, thermion modulators, and photoelectric detectors.

Key words: metamaterial, electromagnetic resonance, perfect absorber, solar broadband absorption

中图分类号:  (Wave propagation, transmission and absorption)

  • 42.25.Bs
77.55.-g (Dielectric thin films) 78.20.Ci (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity)) 78.67.Pt (Multilayers; superlattices; photonic structures; metamaterials)