Dissecting the structure-stability relationship of Y-series electron acceptors for real-world solar cell applications

Han Xu; Jianhua Han; Si Chen; Ye Liu; Luis Huerta Hernandez; Jules Bertrandie; Maxime Babics; Shahidul Alam; Diego Rosas Villalva; Sri Harish Kumar Paleti; Julien Gorenflot; Christoph Herok; Nicolas Ramos; Joel Troughton; Anirudh Sharma; Todd B. Marder; Bernd Engels; Jaime Martin; Stefaan De Wolf; Frédéric Laquai; Derya Baran

doi:10.1016/j.joule.2023.07.003

Dissecting the structure-stability relationship of Y-series electron acceptors for real-world solar cell applications

Han Xu, Jianhua Han, Si Chen, Ye Liu, Luis Huerta Hernandez, Jules Bertrandie, Maxime Babics, Shahidul Alam, Diego Rosas Villalva, Sri Harish Kumar Paleti, Julien Gorenflot, Christoph Herok, Nicolas Ramos, Joel Troughton, Anirudh Sharma, Todd B. Marder, Bernd Engels, Jaime Martin, Stefaan De Wolf, Frédéric LaquaiDerya Baran^*

^*Corresponding author for this work

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

17 Scopus citations

Abstract

Despite striking progress toward improving the photovoltaic (PV) performance of organic solar cells (OSCs) with recent Y-series non-fullerene acceptors (Y-NFAs), knowledge about their outdoor performance under real-world conditions and photodegradation mechanisms remains elusive, which is urgently needed to close the lab-to-fab gap of OSCs. Herein, for the first time, we study the structure-outdoor-stability relationship of Y-NFAs. We show that Y-NFAs with long internal side-chains exhibit high energy barriers for photoisomerization, and fluorinated end-groups can enhance the structural confinement to inhibit the photodegradation pathway and thereby improve device stability. Furthermore, the performance loss of Y-NFA-based OSCs under illumination is mainly driven by increased trap-assisted recombination over time. The structure-stability correlation and demonstration of outdoor performance of these state-of-the-art Y-NFA cells provided in this study highlight molecular engineering of device stability control to minimize power output losses in real-world climates.

Original language	English (US)
Pages (from-to)	2135-2151
Number of pages	17
Journal	Joule
Volume	7
Issue number	9
DOIs	https://doi.org/10.1016/j.joule.2023.07.003
State	Published - Sep 20 2023

Bibliographical note

Publisher Copyright:
© 2023 Elsevier Inc.

Keywords

non-fullerene acceptors
organic solar cells
outdoor stability
photostability
Y6

ASJC Scopus subject areas

General Energy

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.joule.2023.07.003

Cite this

Xu, H., Han, J., Chen, S., Liu, Y., Huerta Hernandez, L., Bertrandie, J., Babics, M., Alam, S., Villalva, D. R., Paleti, S. H. K., Gorenflot, J., Herok, C., Ramos, N., Troughton, J., Sharma, A., Marder, T. B., Engels, B., Martin, J., De Wolf, S., ... Baran, D. (2023). Dissecting the structure-stability relationship of Y-series electron acceptors for real-world solar cell applications. Joule, 7(9), 2135-2151. https://doi.org/10.1016/j.joule.2023.07.003

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title = "Dissecting the structure-stability relationship of Y-series electron acceptors for real-world solar cell applications",

abstract = "Despite striking progress toward improving the photovoltaic (PV) performance of organic solar cells (OSCs) with recent Y-series non-fullerene acceptors (Y-NFAs), knowledge about their outdoor performance under real-world conditions and photodegradation mechanisms remains elusive, which is urgently needed to close the lab-to-fab gap of OSCs. Herein, for the first time, we study the structure-outdoor-stability relationship of Y-NFAs. We show that Y-NFAs with long internal side-chains exhibit high energy barriers for photoisomerization, and fluorinated end-groups can enhance the structural confinement to inhibit the photodegradation pathway and thereby improve device stability. Furthermore, the performance loss of Y-NFA-based OSCs under illumination is mainly driven by increased trap-assisted recombination over time. The structure-stability correlation and demonstration of outdoor performance of these state-of-the-art Y-NFA cells provided in this study highlight molecular engineering of device stability control to minimize power output losses in real-world climates.",

keywords = "non-fullerene acceptors, organic solar cells, outdoor stability, photostability, Y6",

author = "Han Xu and Jianhua Han and Si Chen and Ye Liu and {Huerta Hernandez}, Luis and Jules Bertrandie and Maxime Babics and Shahidul Alam and Villalva, {Diego Rosas} and Paleti, {Sri Harish Kumar} and Julien Gorenflot and Christoph Herok and Nicolas Ramos and Joel Troughton and Anirudh Sharma and Marder, {Todd B.} and Bernd Engels and Jaime Martin and {De Wolf}, Stefaan and Fr{\'e}d{\'e}ric Laquai and Derya Baran",

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year = "2023",

month = sep,

day = "20",

doi = "10.1016/j.joule.2023.07.003",

language = "English (US)",

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Xu, H, Han, J, Chen, S, Liu, Y, Huerta Hernandez, L , Bertrandie, J, Babics, M, Alam, S , Villalva, DR, Paleti, SHK, Gorenflot, J, Herok, C, Ramos, N, Troughton, J, Sharma, A, Marder, TB, Engels, B, Martin, J, De Wolf, S , Laquai, F & Baran, D 2023, 'Dissecting the structure-stability relationship of Y-series electron acceptors for real-world solar cell applications', Joule, vol. 7, no. 9, pp. 2135-2151. https://doi.org/10.1016/j.joule.2023.07.003

TY - JOUR

T1 - Dissecting the structure-stability relationship of Y-series electron acceptors for real-world solar cell applications

AU - Xu, Han

AU - Han, Jianhua

AU - Chen, Si

AU - Liu, Ye

AU - Huerta Hernandez, Luis

AU - Bertrandie, Jules

AU - Babics, Maxime

AU - Alam, Shahidul

AU - Villalva, Diego Rosas

AU - Paleti, Sri Harish Kumar

AU - Gorenflot, Julien

AU - Herok, Christoph

AU - Ramos, Nicolas

AU - Troughton, Joel

AU - Sharma, Anirudh

AU - Marder, Todd B.

AU - Engels, Bernd

AU - Martin, Jaime

AU - De Wolf, Stefaan

AU - Laquai, Frédéric

AU - Baran, Derya

PY - 2023/9/20

Y1 - 2023/9/20

N2 - Despite striking progress toward improving the photovoltaic (PV) performance of organic solar cells (OSCs) with recent Y-series non-fullerene acceptors (Y-NFAs), knowledge about their outdoor performance under real-world conditions and photodegradation mechanisms remains elusive, which is urgently needed to close the lab-to-fab gap of OSCs. Herein, for the first time, we study the structure-outdoor-stability relationship of Y-NFAs. We show that Y-NFAs with long internal side-chains exhibit high energy barriers for photoisomerization, and fluorinated end-groups can enhance the structural confinement to inhibit the photodegradation pathway and thereby improve device stability. Furthermore, the performance loss of Y-NFA-based OSCs under illumination is mainly driven by increased trap-assisted recombination over time. The structure-stability correlation and demonstration of outdoor performance of these state-of-the-art Y-NFA cells provided in this study highlight molecular engineering of device stability control to minimize power output losses in real-world climates.

AB - Despite striking progress toward improving the photovoltaic (PV) performance of organic solar cells (OSCs) with recent Y-series non-fullerene acceptors (Y-NFAs), knowledge about their outdoor performance under real-world conditions and photodegradation mechanisms remains elusive, which is urgently needed to close the lab-to-fab gap of OSCs. Herein, for the first time, we study the structure-outdoor-stability relationship of Y-NFAs. We show that Y-NFAs with long internal side-chains exhibit high energy barriers for photoisomerization, and fluorinated end-groups can enhance the structural confinement to inhibit the photodegradation pathway and thereby improve device stability. Furthermore, the performance loss of Y-NFA-based OSCs under illumination is mainly driven by increased trap-assisted recombination over time. The structure-stability correlation and demonstration of outdoor performance of these state-of-the-art Y-NFA cells provided in this study highlight molecular engineering of device stability control to minimize power output losses in real-world climates.

KW - non-fullerene acceptors

KW - organic solar cells

KW - outdoor stability

KW - photostability

KW - Y6

UR - http://www.scopus.com/inward/record.url?scp=85170050911&partnerID=8YFLogxK

U2 - 10.1016/j.joule.2023.07.003

DO - 10.1016/j.joule.2023.07.003

M3 - Article

AN - SCOPUS:85170050911

SN - 2542-4351

VL - 7

SP - 2135

EP - 2151

JO - Joule

JF - Joule

IS - 9

ER -

Dissecting the structure-stability relationship of Y-series electron acceptors for real-world solar cell applications

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

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