Enhanced optical path and electron diffusion length enable high-efficiency perovskite tandems

Bin Chen; Se-Woong Baek; Yi Hou; Erkan Aydin; Michele de Bastiani; Benjamin Scheffel; Andrew H. Proppe; Ziru Huang; Mingyang Wei; Ya-Kun Wang; Eui-Hyuk Jung; Thomas Allen; Emmanuel Van Kerschaver; F Pelayo García de Arquer; Makhsud I. Saidaminov; Sjoerd Hoogland; Stefaan De Wolf; E. Sargent

doi:10.1038/s41467-020-15077-3

Enhanced optical path and electron diffusion length enable high-efficiency perovskite tandems

Bin Chen, Se-Woong Baek, Yi Hou, Erkan Aydin, Michele de Bastiani, Benjamin Scheffel, Andrew H. Proppe, Ziru Huang, Mingyang Wei, Ya-Kun Wang, Eui-Hyuk Jung, Thomas Allen, Emmanuel Van Kerschaver, F Pelayo García de Arquer, Makhsud I. Saidaminov, Sjoerd Hoogland, Stefaan De Wolf, E. Sargent

Research output: Contribution to journal › Article › peer-review

221 Scopus citations

Abstract

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%.

Original language	English (US)
Journal	Nature Communications
Volume	11
Issue number	1
DOIs	https://doi.org/10.1038/s41467-020-15077-3
State	Published - Mar 9 2020

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This research was made possible by Ontario Research Fund-Research Excellence program (ORF7-Ministry of Research and Innovation, Ontario Research Fund-Research Excellence Round 7); and by the Natural Sciences and Engineering Research Council (NSERC) of Canada. This work was also supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No. OSR-2018-CPF-3669.02. This work was in part supported by NPRP grant #8-086-1-017 from the Qatar National Research Fund.

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Chen, B., Baek, S.-W., Hou, Y., Aydin, E., de Bastiani, M., Scheffel, B., Proppe, A. H., Huang, Z., Wei, M., Wang, Y.-K., Jung, E.-H., Allen, T., Van Kerschaver, E., García de Arquer, F. P., Saidaminov, M. I., Hoogland, S., De Wolf, S., & Sargent, E. (2020). Enhanced optical path and electron diffusion length enable high-efficiency perovskite tandems. Nature Communications, 11(1). https://doi.org/10.1038/s41467-020-15077-3

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title = "Enhanced optical path and electron diffusion length enable high-efficiency perovskite tandems",

abstract = "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%.",

author = "Bin Chen and Se-Woong Baek and Yi Hou and Erkan Aydin and {de Bastiani}, Michele and Benjamin Scheffel and Proppe, {Andrew H.} and Ziru Huang and Mingyang Wei and Ya-Kun Wang and Eui-Hyuk Jung and Thomas Allen and {Van Kerschaver}, Emmanuel and {Garc{\'i}a de Arquer}, {F Pelayo} and Saidaminov, {Makhsud I.} and Sjoerd Hoogland and {De Wolf}, Stefaan and E. Sargent",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This research was made possible by Ontario Research Fund-Research Excellence program (ORF7-Ministry of Research and Innovation, Ontario Research Fund-Research Excellence Round 7); and by the Natural Sciences and Engineering Research Council (NSERC) of Canada. This work was also supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No. OSR-2018-CPF-3669.02. This work was in part supported by NPRP grant #8-086-1-017 from the Qatar National Research Fund.",

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month = mar,

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doi = "10.1038/s41467-020-15077-3",

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Chen, B, Baek, S-W, Hou, Y, Aydin, E, de Bastiani, M, Scheffel, B, Proppe, AH, Huang, Z, Wei, M, Wang, Y-K, Jung, E-H, Allen, T, Van Kerschaver, E, García de Arquer, FP, Saidaminov, MI, Hoogland, S, De Wolf, S & Sargent, E 2020, 'Enhanced optical path and electron diffusion length enable high-efficiency perovskite tandems', Nature Communications, vol. 11, no. 1. https://doi.org/10.1038/s41467-020-15077-3

TY - JOUR

T1 - Enhanced optical path and electron diffusion length enable high-efficiency perovskite tandems

AU - Chen, Bin

AU - Baek, Se-Woong

AU - Hou, Yi

AU - Aydin, Erkan

AU - de Bastiani, Michele

AU - Scheffel, Benjamin

AU - Proppe, Andrew H.

AU - Huang, Ziru

AU - Wei, Mingyang

AU - Wang, Ya-Kun

AU - Jung, Eui-Hyuk

AU - Allen, Thomas

AU - Van Kerschaver, Emmanuel

AU - García de Arquer, F Pelayo

AU - Saidaminov, Makhsud I.

AU - Hoogland, Sjoerd

AU - De Wolf, Stefaan

AU - Sargent, E.

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This research was made possible by Ontario Research Fund-Research Excellence program (ORF7-Ministry of Research and Innovation, Ontario Research Fund-Research Excellence Round 7); and by the Natural Sciences and Engineering Research Council (NSERC) of Canada. This work was also supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No. OSR-2018-CPF-3669.02. This work was in part supported by NPRP grant #8-086-1-017 from the Qatar National Research Fund.

PY - 2020/3/9

Y1 - 2020/3/9

N2 - 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%.

AB - 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%.

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U2 - 10.1038/s41467-020-15077-3

DO - 10.1038/s41467-020-15077-3

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VL - 11

JO - Nature Communications

JF - Nature Communications

IS - 1

ER -

Enhanced optical path and electron diffusion length enable high-efficiency perovskite tandems

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