Solar cell design using graphene-based hollow nano-pillars

Abstract In this paper, the full solar spectrum coverage with an absorption efficiency above 96% is attained by shell-shaped graphene-based hollow nano-pillars on top of the refractory metal substrate. The material choice guarantees the high thermal stability of the device along with its robustness...

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Autores principales: Shiva Hayati Raad, Zahra Atlasbaf
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2021
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Acceso en línea:https://doaj.org/article/499685962a26416e851c6f5c0fa9175d
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spelling oai:doaj.org-article:499685962a26416e851c6f5c0fa9175d2021-12-02T15:07:54ZSolar cell design using graphene-based hollow nano-pillars10.1038/s41598-021-95684-22045-2322https://doaj.org/article/499685962a26416e851c6f5c0fa9175d2021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-95684-2https://doaj.org/toc/2045-2322Abstract In this paper, the full solar spectrum coverage with an absorption efficiency above 96% is attained by shell-shaped graphene-based hollow nano-pillars on top of the refractory metal substrate. The material choice guarantees the high thermal stability of the device along with its robustness against harsh environmental conditions. To design the structure, constitutive parameters of graphene material in the desired frequency range are investigated and its absorption capability is illustrated by calculating the attenuation constant of the electromagnetic wave. It is observed that broadband absorption is a consequence of wideband retrieved surface impedance matching with the free-space intrinsic impedance due to the tapered geometry. Moreover, the azimuthal and longitudinal cavity resonances with different orders are exhibited for a better understanding of the underlying wideband absorption mechanism. Importantly, the device can tolerate the oblique incidence in a wide span around 65°, regardless of the polarization. The proposed structure can be realized by large-area fabrication techniques.Shiva Hayati RaadZahra AtlasbafNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Shiva Hayati Raad
Zahra Atlasbaf
Solar cell design using graphene-based hollow nano-pillars
description Abstract In this paper, the full solar spectrum coverage with an absorption efficiency above 96% is attained by shell-shaped graphene-based hollow nano-pillars on top of the refractory metal substrate. The material choice guarantees the high thermal stability of the device along with its robustness against harsh environmental conditions. To design the structure, constitutive parameters of graphene material in the desired frequency range are investigated and its absorption capability is illustrated by calculating the attenuation constant of the electromagnetic wave. It is observed that broadband absorption is a consequence of wideband retrieved surface impedance matching with the free-space intrinsic impedance due to the tapered geometry. Moreover, the azimuthal and longitudinal cavity resonances with different orders are exhibited for a better understanding of the underlying wideband absorption mechanism. Importantly, the device can tolerate the oblique incidence in a wide span around 65°, regardless of the polarization. The proposed structure can be realized by large-area fabrication techniques.
format article
author Shiva Hayati Raad
Zahra Atlasbaf
author_facet Shiva Hayati Raad
Zahra Atlasbaf
author_sort Shiva Hayati Raad
title Solar cell design using graphene-based hollow nano-pillars
title_short Solar cell design using graphene-based hollow nano-pillars
title_full Solar cell design using graphene-based hollow nano-pillars
title_fullStr Solar cell design using graphene-based hollow nano-pillars
title_full_unstemmed Solar cell design using graphene-based hollow nano-pillars
title_sort solar cell design using graphene-based hollow nano-pillars
publisher Nature Portfolio
publishDate 2021
url https://doaj.org/article/499685962a26416e851c6f5c0fa9175d
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AT zahraatlasbaf solarcelldesignusinggraphenebasedhollownanopillars
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