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Enhanced optical path and electron diffusion length enable high-efficiency perovskite tandems
Tandem solar cells involving metal-halide perovskite subcells offer routes to power conversion efficiencies (PCEs) that exceed the single-junction limit; however, reported PCE values for tandems have so far lain below their potential due to inefficient photon harvesting. Here we increase the optical...
Autores principales: | , , , , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Nature Publishing Group UK
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7062737/ https://www.ncbi.nlm.nih.gov/pubmed/32152324 http://dx.doi.org/10.1038/s41467-020-15077-3 |
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author | Chen, Bin Baek, Se-Woong Hou, Yi Aydin, Erkan De Bastiani, Michele Scheffel, Benjamin Proppe, Andrew Huang, Ziru Wei, Mingyang Wang, Ya-Kun Jung, Eui-Hyuk Allen, Thomas G. Van Kerschaver, Emmanuel García de Arquer, F. Pelayo Saidaminov, Makhsud I. Hoogland, Sjoerd De Wolf, Stefaan Sargent, Edward H. |
author_facet | Chen, Bin Baek, Se-Woong Hou, Yi Aydin, Erkan De Bastiani, Michele Scheffel, Benjamin Proppe, Andrew Huang, Ziru Wei, Mingyang Wang, Ya-Kun Jung, Eui-Hyuk Allen, Thomas G. Van Kerschaver, Emmanuel García de Arquer, F. Pelayo Saidaminov, Makhsud I. Hoogland, Sjoerd De Wolf, Stefaan Sargent, Edward H. |
author_sort | Chen, Bin |
collection | PubMed |
description | Tandem solar cells involving metal-halide perovskite subcells offer routes to power conversion efficiencies (PCEs) that exceed the single-junction limit; however, reported PCE values for tandems have so far lain below their potential due to inefficient photon harvesting. Here we increase the optical path length in perovskite films by preserving smooth morphology while increasing thickness using a method we term boosted solvent extraction. Carrier collection in these films – as made – is limited by an insufficient electron diffusion length; however, we further find that adding a Lewis base reduces the trap density and enhances the electron-diffusion length to 2.3 µm, enabling a 19% PCE for 1.63 eV semi-transparent perovskite cells having an average near-infrared transmittance of 85%. The perovskite top cell combined with solution-processed colloidal quantum dot:organic hybrid bottom cell leads to a PCE of 24%; while coupling the perovskite cell with a silicon bottom cell yields a PCE of 28.2%. |
format | Online Article Text |
id | pubmed-7062737 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-70627372020-03-18 Enhanced optical path and electron diffusion length enable high-efficiency perovskite tandems Chen, Bin Baek, Se-Woong Hou, Yi Aydin, Erkan De Bastiani, Michele Scheffel, Benjamin Proppe, Andrew Huang, Ziru Wei, Mingyang Wang, Ya-Kun Jung, Eui-Hyuk Allen, Thomas G. Van Kerschaver, Emmanuel García de Arquer, F. Pelayo Saidaminov, Makhsud I. Hoogland, Sjoerd De Wolf, Stefaan Sargent, Edward H. Nat Commun Article Tandem solar cells involving metal-halide perovskite subcells offer routes to power conversion efficiencies (PCEs) that exceed the single-junction limit; however, reported PCE values for tandems have so far lain below their potential due to inefficient photon harvesting. Here we increase the optical path length in perovskite films by preserving smooth morphology while increasing thickness using a method we term boosted solvent extraction. Carrier collection in these films – as made – is limited by an insufficient electron diffusion length; however, we further find that adding a Lewis base reduces the trap density and enhances the electron-diffusion length to 2.3 µm, enabling a 19% PCE for 1.63 eV semi-transparent perovskite cells having an average near-infrared transmittance of 85%. The perovskite top cell combined with solution-processed colloidal quantum dot:organic hybrid bottom cell leads to a PCE of 24%; while coupling the perovskite cell with a silicon bottom cell yields a PCE of 28.2%. Nature Publishing Group UK 2020-03-09 /pmc/articles/PMC7062737/ /pubmed/32152324 http://dx.doi.org/10.1038/s41467-020-15077-3 Text en © The Author(s) 2020 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Chen, Bin Baek, Se-Woong Hou, Yi Aydin, Erkan De Bastiani, Michele Scheffel, Benjamin Proppe, Andrew Huang, Ziru Wei, Mingyang Wang, Ya-Kun Jung, Eui-Hyuk Allen, Thomas G. Van Kerschaver, Emmanuel García de Arquer, F. Pelayo Saidaminov, Makhsud I. Hoogland, Sjoerd De Wolf, Stefaan Sargent, Edward H. Enhanced optical path and electron diffusion length enable high-efficiency perovskite tandems |
title | Enhanced optical path and electron diffusion length enable high-efficiency perovskite tandems |
title_full | Enhanced optical path and electron diffusion length enable high-efficiency perovskite tandems |
title_fullStr | Enhanced optical path and electron diffusion length enable high-efficiency perovskite tandems |
title_full_unstemmed | Enhanced optical path and electron diffusion length enable high-efficiency perovskite tandems |
title_short | Enhanced optical path and electron diffusion length enable high-efficiency perovskite tandems |
title_sort | enhanced optical path and electron diffusion length enable high-efficiency perovskite tandems |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7062737/ https://www.ncbi.nlm.nih.gov/pubmed/32152324 http://dx.doi.org/10.1038/s41467-020-15077-3 |
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