中国物理B ›› 2020, Vol. 29 ›› Issue (1): 14201-014201.doi: 10.1088/1674-1056/ab5787

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Broadband visible light absorber based on ultrathin semiconductor nanostructures

Lin-Jin Huang(黄林锦), Jia-Qi Li(李嘉麒), Man-Yi Lu(卢漫仪), Yan-Quan Chen(陈彦权), Hong-Ji Zhu(朱宏基), 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:2019-08-01 修回日期:2019-09-05 出版日期:2020-01-05 发布日期:2020-01-05
  • 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 Nos. 2018A030313854 and 2016A030313851).

Broadband visible light absorber based on ultrathin semiconductor nanostructures

Lin-Jin Huang(黄林锦), Jia-Qi Li(李嘉麒), Man-Yi Lu(卢漫仪), Yan-Quan Chen(陈彦权), Hong-Ji Zhu(朱宏基), 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:2019-08-01 Revised:2019-09-05 Online:2020-01-05 Published:2020-01-05
  • Contact: Hai-Ying Liu E-mail:hyliu@scnu.edu.cn
  • Supported by:
    Project supported by the Natural Science Foundation of Guangdong Province, China (Grant Nos. 2018A030313854 and 2016A030313851).

摘要: It is desirable to have electromagnetic wave absorbers with ultrathin structural thickness and broader spectral absorption bandwidth with numerous applications in optoelectronics. In this paper, we theoretically propose and numerically demonstrate a novel ultrathin nanostructure absorber composed of semiconductor nanoring array and a uniform gold substrate. The results show that the absorption covers the entire visible light region, achieving an average absorption rate more than 90% in a wavelength range from 300 nm to 740 nm and a nearly perfect absorption from 450 nm to 500 nm, and the polarization insensitivity performance is particularly great. The absorption performance is mainly caused by the electrical resonance and magnetic resonance of semiconductor nanoring array as well as the field coupling effects. Our designed broadband visible light absorber has wide application prospects in the fields of thermal photovoltaics and photodetectors.

关键词: ultrathin nanostructures, electrical resonance, magnetic resonance, polarization insensitivity

Abstract: It is desirable to have electromagnetic wave absorbers with ultrathin structural thickness and broader spectral absorption bandwidth with numerous applications in optoelectronics. In this paper, we theoretically propose and numerically demonstrate a novel ultrathin nanostructure absorber composed of semiconductor nanoring array and a uniform gold substrate. The results show that the absorption covers the entire visible light region, achieving an average absorption rate more than 90% in a wavelength range from 300 nm to 740 nm and a nearly perfect absorption from 450 nm to 500 nm, and the polarization insensitivity performance is particularly great. The absorption performance is mainly caused by the electrical resonance and magnetic resonance of semiconductor nanoring array as well as the field coupling effects. Our designed broadband visible light absorber has wide application prospects in the fields of thermal photovoltaics and photodetectors.

Key words: ultrathin nanostructures, electrical resonance, magnetic resonance, polarization insensitivity

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

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