Band Gap Engineering of Multi-Junction Solar Cells: Effects of Series Resistances and Solar Concentration

Abstract Multi-junction (MJ) solar cells are one of the most promising technologies achieving high sunlight to electricity conversion efficiency. Resistive losses constitute one of the main underlying mechanisms limiting their efficiency under high illumination. In this paper, we study, by numerical...

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Autores principales:	Joya Zeitouny, Eugene A. Katz, Alain Dollet, Alexis Vossier
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b2c76355ba354102b148ecbe6dac0a2d
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spelling	oai:doaj.org-article:b2c76355ba354102b148ecbe6dac0a2d2021-12-02T12:32:39ZBand Gap Engineering of Multi-Junction Solar Cells: Effects of Series Resistances and Solar Concentration10.1038/s41598-017-01854-62045-2322https://doaj.org/article/b2c76355ba354102b148ecbe6dac0a2d2017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01854-6https://doaj.org/toc/2045-2322Abstract Multi-junction (MJ) solar cells are one of the most promising technologies achieving high sunlight to electricity conversion efficiency. Resistive losses constitute one of the main underlying mechanisms limiting their efficiency under high illumination. In this paper, we study, by numerical modeling, the extent to which a fine-tuning of the different electronic gaps involved in MJ stacks may mitigate the detrimental effects of series resistance losses for concentration-dependent and independent series resistances. Our results demonstrate that appropriate bandgap engineering may lead to significantly higher conversion efficiency at illumination levels above ~1000 suns and series resistance values typically exceeding 0.02 Ω cm2, due to lower operating current and, in turn, series resistance losses. The implications for future generations of solar cells aiming at an improved conversion of the solar spectrum are also addressed.Joya ZeitounyEugene A. KatzAlain DolletAlexis VossierNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Joya Zeitouny Eugene A. Katz Alain Dollet Alexis Vossier Band Gap Engineering of Multi-Junction Solar Cells: Effects of Series Resistances and Solar Concentration
description	Abstract Multi-junction (MJ) solar cells are one of the most promising technologies achieving high sunlight to electricity conversion efficiency. Resistive losses constitute one of the main underlying mechanisms limiting their efficiency under high illumination. In this paper, we study, by numerical modeling, the extent to which a fine-tuning of the different electronic gaps involved in MJ stacks may mitigate the detrimental effects of series resistance losses for concentration-dependent and independent series resistances. Our results demonstrate that appropriate bandgap engineering may lead to significantly higher conversion efficiency at illumination levels above ~1000 suns and series resistance values typically exceeding 0.02 Ω cm2, due to lower operating current and, in turn, series resistance losses. The implications for future generations of solar cells aiming at an improved conversion of the solar spectrum are also addressed.
format	article
author	Joya Zeitouny Eugene A. Katz Alain Dollet Alexis Vossier
author_facet	Joya Zeitouny Eugene A. Katz Alain Dollet Alexis Vossier
author_sort	Joya Zeitouny
title	Band Gap Engineering of Multi-Junction Solar Cells: Effects of Series Resistances and Solar Concentration
title_short	Band Gap Engineering of Multi-Junction Solar Cells: Effects of Series Resistances and Solar Concentration
title_full	Band Gap Engineering of Multi-Junction Solar Cells: Effects of Series Resistances and Solar Concentration
title_fullStr	Band Gap Engineering of Multi-Junction Solar Cells: Effects of Series Resistances and Solar Concentration
title_full_unstemmed	Band Gap Engineering of Multi-Junction Solar Cells: Effects of Series Resistances and Solar Concentration
title_sort	band gap engineering of multi-junction solar cells: effects of series resistances and solar concentration
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/b2c76355ba354102b148ecbe6dac0a2d
work_keys_str_mv	AT joyazeitouny bandgapengineeringofmultijunctionsolarcellseffectsofseriesresistancesandsolarconcentration AT eugeneakatz bandgapengineeringofmultijunctionsolarcellseffectsofseriesresistancesandsolarconcentration AT alaindollet bandgapengineeringofmultijunctionsolarcellseffectsofseriesresistancesandsolarconcentration AT alexisvossier bandgapengineeringofmultijunctionsolarcellseffectsofseriesresistancesandsolarconcentration
_version_	1718394000988176384

Band Gap Engineering of Multi-Junction Solar Cells: Effects of Series Resistances and Solar Concentration

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