Broadband graphene‐based metasurface solar absorber

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Abstract
We presented broadband solar absorber using graphene‐based pyramid‐shaped metasurface structure. The proposed design is analyzed for its absorption characteristics from 100 THz to 1000 THz frequency range (infrared, visible, and ultraviolet region) in term of geometrical parameters of the design. Results in term of reflectance and absorption are presented for pyramidal metasurface design and rectangular metasurface design. The results indicate that the absorption of proposed pyramid graphene‐based metasurface design is over 67.4% for 100 to 430 THz across the infrared region, 87.3% for 431 to 770 THz across the visible region and 89.3% for 770 to 1000 THz across the ultraviolet region. The proposed design provides broadband absorption response which is applicable in energy harvesting and electromagnetic shielding applications.

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