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Research Article

Slot-die coated large-area flexible all-polymer solar cells by non-halogenated solvent

Yi-Fan Shen1,2,3, Jianqi Zhang1( ), Chenyang Tian1,2, Dingding Qiu1,2,3, Zhixiang Wei1,2( )
CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
University of Chinese Academy of Sciences, Beijing 100049, China
Sino-Danish Center for Education and Research, Sino-Danish College, University of Chinese Academy of Sciences, Beijing 100049, China
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Graphical Abstract

PTQ10:PYF-T-o based all-polymer large-area flexible solar cells were successfully fabricated by slot-die coating using o-xylene without any post-treatments and achieved an excellent efficiency of 11.24%.

Abstract

The slot-die coating is recognized as the most compatible method for the roll-to-roll (R2R) processing of large-area flexible organic solar cells (OSCs). However, the photovoltaic performance of the large-area flexible all-polymer solar cells was significantly lagging behind that of polymer donors with small molecule non-fullerene acceptors devices. In this work, the 1 cm2 flexible device of an all-polymer system, PTQ10:PYF-T-o, fabricated by slot-die coating, achieves an excellent efficiency of 11.24% via controlling the coating temperatures. It is found that, compared with the donor, the crystallinity of PYF-T-o plays a crucial role in device performance. The all-polymer flexible devices show superior mechanical bending stability, maintaining an efficiency of over 95% of the initial value during a 1000-cycle bending test.

Keywords

organic solar cellsslot-die coatingnon-halogenated solventflexible large-area devicesmorphology control

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Nano Research
Volume 16 Issue 12,
December 2023
Pages 13008-13013
DOI: 10.1007/s12274-023-5861-1
Cite this article:
Shen Y-F, Zhang J, Tian C, et al. Slot-die coated large-area flexible all-polymer solar cells by non-halogenated solvent. Nano Research, 2023, 16(12): 13008-13013. https://doi.org/10.1007/s12274-023-5861-1
Topics:
Polymer solar cells
Part of a topical collection:
Special issue for the 20th Anniversary of NCNST

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Received: 29 April 2023
Revised: 16 May 2023
Accepted: 19 May 2023
Published: 01 July 2023
© Tsinghua University Press 2023
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