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Light and elevated temperature induced degradation and recovery of gallium-doped Czochralski-silicon solar cells

The fast-firing step commonly applied at the end of solar cell production lines is known to trigger light-induced degradation effects on solar cells made on different silicon materials. In this study, we examine degradation phenomena on high-efficiency solar cells with poly-Si passivating contacts m...

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Autores principales: Winter, Michael, Walter, Dominic C., Min, Byungsul, Peibst, Robby, Brendel, Rolf, Schmidt, Jan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9110720/
https://www.ncbi.nlm.nih.gov/pubmed/35577833
http://dx.doi.org/10.1038/s41598-022-11831-3
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author Winter, Michael
Walter, Dominic C.
Min, Byungsul
Peibst, Robby
Brendel, Rolf
Schmidt, Jan
author_facet Winter, Michael
Walter, Dominic C.
Min, Byungsul
Peibst, Robby
Brendel, Rolf
Schmidt, Jan
author_sort Winter, Michael
collection PubMed
description The fast-firing step commonly applied at the end of solar cell production lines is known to trigger light-induced degradation effects on solar cells made on different silicon materials. In this study, we examine degradation phenomena on high-efficiency solar cells with poly-Si passivating contacts made on Ga-doped Czochralski-grown silicon (Cz-Si) base material under one-sun illumination at elevated temperatures ranging from 80 to 160 °C. The extent of degradation is demonstrated to increase with the applied temperature up to 140 °C. Above 140 °C, the degradation extent decreases with increasing temperature. The degradation of the energy conversion efficiency can be ascribed foremost to a reduction of the short-circuit current and the fill factor and to a lesser extent to a reduction of the open-circuit voltage. The extent of degradation at 140 °C amounts to 0.4%(abs) of the initial conversion efficiency of 22.1% compared to 0.15%(abs) at 80 °C. The extent of the efficiency degradation in the examined solar cells is significantly lower (by a factor of ~ 5) compared to solar cells made on B-doped Cz-Si wafers. Importantly, through prolonged illumination at elevated temperatures (e.g. 5 h, 1 sun, 140 °C), an improvement of the conversion efficiency by up to 0.2%(abs) compared to the initial value is achievable in combination with a permanent regeneration resulting in long-term stable conversion efficiencies above 22%.
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spelling pubmed-91107202022-05-18 Light and elevated temperature induced degradation and recovery of gallium-doped Czochralski-silicon solar cells Winter, Michael Walter, Dominic C. Min, Byungsul Peibst, Robby Brendel, Rolf Schmidt, Jan Sci Rep Article The fast-firing step commonly applied at the end of solar cell production lines is known to trigger light-induced degradation effects on solar cells made on different silicon materials. In this study, we examine degradation phenomena on high-efficiency solar cells with poly-Si passivating contacts made on Ga-doped Czochralski-grown silicon (Cz-Si) base material under one-sun illumination at elevated temperatures ranging from 80 to 160 °C. The extent of degradation is demonstrated to increase with the applied temperature up to 140 °C. Above 140 °C, the degradation extent decreases with increasing temperature. The degradation of the energy conversion efficiency can be ascribed foremost to a reduction of the short-circuit current and the fill factor and to a lesser extent to a reduction of the open-circuit voltage. The extent of degradation at 140 °C amounts to 0.4%(abs) of the initial conversion efficiency of 22.1% compared to 0.15%(abs) at 80 °C. The extent of the efficiency degradation in the examined solar cells is significantly lower (by a factor of ~ 5) compared to solar cells made on B-doped Cz-Si wafers. Importantly, through prolonged illumination at elevated temperatures (e.g. 5 h, 1 sun, 140 °C), an improvement of the conversion efficiency by up to 0.2%(abs) compared to the initial value is achievable in combination with a permanent regeneration resulting in long-term stable conversion efficiencies above 22%. Nature Publishing Group UK 2022-05-16 /pmc/articles/PMC9110720/ /pubmed/35577833 http://dx.doi.org/10.1038/s41598-022-11831-3 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Winter, Michael
Walter, Dominic C.
Min, Byungsul
Peibst, Robby
Brendel, Rolf
Schmidt, Jan
Light and elevated temperature induced degradation and recovery of gallium-doped Czochralski-silicon solar cells
title Light and elevated temperature induced degradation and recovery of gallium-doped Czochralski-silicon solar cells
title_full Light and elevated temperature induced degradation and recovery of gallium-doped Czochralski-silicon solar cells
title_fullStr Light and elevated temperature induced degradation and recovery of gallium-doped Czochralski-silicon solar cells
title_full_unstemmed Light and elevated temperature induced degradation and recovery of gallium-doped Czochralski-silicon solar cells
title_short Light and elevated temperature induced degradation and recovery of gallium-doped Czochralski-silicon solar cells
title_sort light and elevated temperature induced degradation and recovery of gallium-doped czochralski-silicon solar cells
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9110720/
https://www.ncbi.nlm.nih.gov/pubmed/35577833
http://dx.doi.org/10.1038/s41598-022-11831-3
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