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Comparative analysis of metasurface array-based solar absorber for visible region

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Abstract

We have proposed a graphene-based metasurface solar absorber for broadband visible wavelength range. The absorption analysis for four different designs is represented. We have explored the Four C-shape array metasurface absorber design, Five circle array metasurface absorber design, Five C-shape array metasurface absorber design, and the Four circle array metasurface absorber design for ultraviolet, visible, and infrared regions with the wavelength ranging from 0.2 to 0.8 µm. The highest average absorption is achieved for the four C-shape array metasurface absorber design. Furthermore, the absorptance response is also explored for various parameter variations such as substrate thickness, resonator thickness, and graphene chemical potential. The substrate height and resonator height have a marginal effect on absorptance. We have also analysed the design by placing graphene material spacer between gold layer and SiO2 substrate layer. While the effect of graphene chemical potential on absorptance is negligible for 0.1–0.7 eV, but for graphene chemical potential of 0.9 eV, the absorptance plot shows a sudden decrease at around 0.69 µm wavelength. The proposed metasurface solar absorber can be applied for photovoltaic applications and solar energy harvesting applications.

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Funding

The work is supported by start-up and innovation grant under IEDC New Gen project. Department of Science and Technology (DST), Govt. of India, with the Grant No. MU/NewGen/2020/3.

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Correspondence to Shobhit K. Patel.

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Surve, J., Parmar, J., Patel, S.K. et al. Comparative analysis of metasurface array-based solar absorber for visible region. Opt Quant Electron 53, 696 (2021). https://doi.org/10.1007/s11082-021-03355-3

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  • DOI: https://doi.org/10.1007/s11082-021-03355-3

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