Affiliation:
1. University of Electronic Science and Technology of China
Abstract
In this study, we simulate how much solar energy a proposed planar dielectric-metal (SiO2-Ti-SiO2-Ti-SiO2-Ti-SiO2-W) structure can absorb by employing FDTD solutions. The proposed structure is ultrathin (510.1 nm). It can absorb incident light within a wavelength range of 345 to at least 2500 nm with an average absorption of 97.8% for the incident light in the 345–2500 nm band while maintaining efficient absorption for a wide range of incident light when its angle changes and being insensitive to the polarization angle of the incident light. In addition, the Particle Swarm Optimization algorithm was used to optimize the proposed planar structure, and the optimality of the 8-layer structure was investigated. In addition, we compare the proposed structure to those of others, analyze the reasons for the structure's perfect absorption, and discuss the resonance mode that occurs during the absorption process, which demonstrates the rationale behind its perfect absorption. As a result, the proposed device can efficiently and sustainably collect solar energy.
Funder
Natural Science Foundation of Fujian Province
National Natural Science Foundation of China
Science Fund for Distinguished Young Scholars of Fujian Province
Science and Technology Major Project of of Fujian Province
Innovation Fund for Young Scientists of Xiamen
Xiamen Marine and Fishery Development Special Fund
Youth Talent Support Program of Jimei University
Subject
Electronic, Optical and Magnetic Materials
Cited by
1 articles.
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