Plasmonic Metasurface Absorber Based on Electro-Optic Substrate for Energy Harvesting

Author:

Muhammad Naseer,Fu Tao,Liu Qiang,Tang Xiaopin,Deng Zi-Lan,Ouyang ZhengbiaoORCID

Abstract

A highly efficient and broad light absorber capable of wide-angle absorption in the visible and near infrared range is presented and numerically investigated for energy harvesting in a simple geometry. According to the calculated results, the proposed device has a peak absorption level of about 99.95%. The actual absorption efficiency is 76.35%, which is approaching that of complex multilayer absorbers with 88 layers working in the wavelength range of 300 nm to 2000 nm. The electro-optic material has the potential of shifting the absorption peak position, compensating fabrication errors and thus reducing the fabrication technique difficulties. Also, the high electro-optic tunability can be used for filters, infrared detection, and imaging applications. More directly, the proposed absorber can be potentially deployed in solar cells and solar thermals.

Funder

National Natural Science Foundation of China

Publisher

MDPI AG

Subject

General Materials Science

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