Unsymmetrically Chlorinated Non‐Fused Electron Acceptor Leads to High‐Efficiency and Stable Organic Solar Cells

Searching the cost‐effective organic semiconductors is strongly needed in order to facilitate the practice of organic solar cells (OSCs), yet to be fulfilled. Herein, we have succeeded in developing two non‐fused ring electron acceptors (NFREAs), leading to the highest efficiency of 16.2 % for the N...

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Published inAngewandte Chemie International Edition Vol. 62; no. 5; pp. e202214931 - n/a
Main Authors Ma, De‐Li, Zhang, Qian‐Qian, Li, Chang‐Zhi
Format Journal Article
LanguageEnglish
Published WEINHEIM Wiley 26.01.2023
Wiley Subscription Services, Inc
EditionInternational ed. in English
Subjects
3D Network
Chemistry
Chemistry, Multidisciplinary
Chlorination
Non-Fused-Ring Acceptor
Optoelectronics
Organic semiconductors
Organic Solar Cells
Photovoltaic cells
Physical Sciences
Science & Technology
Single Crystal
Solar cells
3D Network
EXCITON
VOLTAGE
IMPACT
Chlorination
Non-Fused-Ring Acceptor
Single Crystal
DELOCALIZATION
Organic Solar Cells
ENABLES
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Summary:Searching the cost‐effective organic semiconductors is strongly needed in order to facilitate the practice of organic solar cells (OSCs), yet to be fulfilled. Herein, we have succeeded in developing two non‐fused ring electron acceptors (NFREAs), leading to the highest efficiency of 16.2 % for the NFREA derived OSCs. These OSCs exhibit the superior operational stabilities under one sun equivalent illumination without ultraviolet (UV) filtration. It is revealed that the modulation of halogen substituents on aromatic side chains, as the new structural tool to tune the intermolecular interaction and optoelectronic properties of acceptors, not only promotes the interlocked tic‐tac‐toe frame of three‐dimensional stacks in solid, but also improves charge dynamics of acceptors to enable high‐performance and stable OSCs. Two non‐fused ring electron acceptors (NFREAs) have been developed. The halogen substituents on the aromatic side chains, as the new structure design tools, not only facilitate the construction of 3D stacks in solid, but also optimize the optoelectronic properties of the NFREAs, leading to organic solar cells with 16.2 % efficiency and excellent operational stability.
Bibliography:These authors contributed equally to this work.
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ISSN:1433-7851
1521-3773
1521-3773
DOI:10.1002/anie.202214931