Abstract
We present graphene metasurface based efficient and broadband solar absorber composed of a periodically arranged array of C-shaped metasurface placed above the dielectric layer. The proposed broadband graphene-based solar absorber is analyzed in terms of absorption characteristic with 82.7% absorption in the infrared region (280–380 THz), 86.5% absorption in the visible region (430–770 THz) and 92.99% absorption in Ultraviolet region (780–1000 THz). The simulation results are analyzed from 100 to 1200 THz in terms of absorption and reflection response with and without multiple graphene strips placed above the dielectric layer. The wide absorption band can be flexibly tuned from low-frequency band to high-frequency band by adjusting different design parameters of the proposed absorber. The proposed absorber design will be used as a building block for designing graphene-based sensors, optoelectronic devices, energy harvesting devices, and photovoltaic devices.
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