Resonant nano-dimer metasurface for ultra-thin a-Si:H solar cells

Abstract Low-cost hydrogenated amorphous silicon solar cells (a-Si:H) can perform better and be more competitive by including nanostructures. An optimized nano-dimer structure embedded in close contact with the back electrode of an aSi:H ultra-thin solar cells can enhance the deliverable short-circu...

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Autores principales:	Mahmoud H. Elshorbagy, Pablo A. Sánchez, Alexander Cuadrado, Javier Alda, Óscar Esteban
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ae31a0c121654c71854b92d2d5209b02
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spelling	oai:doaj.org-article:ae31a0c121654c71854b92d2d5209b022021-12-02T14:25:16ZResonant nano-dimer metasurface for ultra-thin a-Si:H solar cells10.1038/s41598-021-86738-62045-2322https://doaj.org/article/ae31a0c121654c71854b92d2d5209b022021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-86738-6https://doaj.org/toc/2045-2322Abstract Low-cost hydrogenated amorphous silicon solar cells (a-Si:H) can perform better and be more competitive by including nanostructures. An optimized nano-dimer structure embedded in close contact with the back electrode of an aSi:H ultra-thin solar cells can enhance the deliverable short-circuit current up to 27.5 %. This enhancement is the result of an increase in the absorption at the active layer, that is the product of an efficient scattering from the nanostructure. From our calculations, the nano-dimer structure must be made out of a high-index of refraction material, like GaP. The evaluation of the scattering and absorption cross section of the structure supports the calculated enhancement in short-circuit current, that is always accompanied by a decrease in the total reflectance of the cell, which is reduced by about 50 %.Mahmoud H. ElshorbagyPablo A. SánchezAlexander CuadradoJavier AldaÓscar EstebanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Mahmoud H. Elshorbagy Pablo A. Sánchez Alexander Cuadrado Javier Alda Óscar Esteban Resonant nano-dimer metasurface for ultra-thin a-Si:H solar cells
description	Abstract Low-cost hydrogenated amorphous silicon solar cells (a-Si:H) can perform better and be more competitive by including nanostructures. An optimized nano-dimer structure embedded in close contact with the back electrode of an aSi:H ultra-thin solar cells can enhance the deliverable short-circuit current up to 27.5 %. This enhancement is the result of an increase in the absorption at the active layer, that is the product of an efficient scattering from the nanostructure. From our calculations, the nano-dimer structure must be made out of a high-index of refraction material, like GaP. The evaluation of the scattering and absorption cross section of the structure supports the calculated enhancement in short-circuit current, that is always accompanied by a decrease in the total reflectance of the cell, which is reduced by about 50 %.
format	article
author	Mahmoud H. Elshorbagy Pablo A. Sánchez Alexander Cuadrado Javier Alda Óscar Esteban
author_facet	Mahmoud H. Elshorbagy Pablo A. Sánchez Alexander Cuadrado Javier Alda Óscar Esteban
author_sort	Mahmoud H. Elshorbagy
title	Resonant nano-dimer metasurface for ultra-thin a-Si:H solar cells
title_short	Resonant nano-dimer metasurface for ultra-thin a-Si:H solar cells
title_full	Resonant nano-dimer metasurface for ultra-thin a-Si:H solar cells
title_fullStr	Resonant nano-dimer metasurface for ultra-thin a-Si:H solar cells
title_full_unstemmed	Resonant nano-dimer metasurface for ultra-thin a-Si:H solar cells
title_sort	resonant nano-dimer metasurface for ultra-thin a-si:h solar cells
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/ae31a0c121654c71854b92d2d5209b02
work_keys_str_mv	AT mahmoudhelshorbagy resonantnanodimermetasurfaceforultrathinasihsolarcells AT pabloasanchez resonantnanodimermetasurfaceforultrathinasihsolarcells AT alexandercuadrado resonantnanodimermetasurfaceforultrathinasihsolarcells AT javieralda resonantnanodimermetasurfaceforultrathinasihsolarcells AT oscaresteban resonantnanodimermetasurfaceforultrathinasihsolarcells
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Resonant nano-dimer metasurface for ultra-thin a-Si:H solar cells

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