Design and analysis of a broadband nanoantenna for energy harvesting

Lu Zhu; Yue Jin; Kangkang Li; Huan Liu; Yuanyuan Liu

doi:10.1117/12.2547472

20 December 2019 Design and analysis of a broadband nanoantenna for energy harvesting

Lu Zhu, Yue Jin, Kangkang Li, Huan Liu, Yuanyuan Liu

Proceedings Volume 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019); 112091M (2019) https://doi.org/10.1117/12.2547472
Event: Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 2019, Xi'an, China

Abstract

In this paper, we propose a broadband nanoantenna for solar energy harvesting, whose elements compose of dual triangles, a hexagonal pillar and a ring column. The optical characteristics are analyzed numerically by the three dimensional finite-difference time-domain (FDTD) method. It is found that the average absorptivity of the nanostructure is 84.53% in the visible and near-infrared waveband raning from 400-1800nm. In addition, the prefect light absorbing capability is independent of the incident light polarization state, and it can keep up an average absorptivity of 86% for an incident angle as large as ±60°. We attribute the better absorption property of the nanoantenna to Fabry-Perot resonance, lighting-rod effects and the localized surface plasmon resonance enhancement.

Citation Download Citation

Lu Zhu, Yue Jin, Kangkang Li, Huan Liu, and Yuanyuan Liu "Design and analysis of a broadband nanoantenna for energy harvesting", Proc. SPIE 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 112091M (20 December 2019); https://doi.org/10.1117/12.2547472

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