Abstract
Organic solar cells (OSCs) hold significant promise as candidates for next‐generation solar technology. Nevertheless, in state‐of‐the‐art OSCs using Y‐series nonfullerene acceptors, it remains challenging to achieve a high power conversion efficiency (PCE) while simultaneously addressing the inherent thermal instability. This study shows a straightforward additive strategy that can effectively accomplish both goals. By introducing 2 wt% commercially available insulating polyphenylene oxide (SA9000), the PCE and thermal stability of Y6‐based solar cells can be simultaneously improved. Atomic force microscopy confirms a slower coarsening process in the film with SA9000 under thermal stress. The investigation indicates that SA9000's success lies in its excellent miscibility with Y6, which can selectively alter electron mobility, resulting in a balance between hole and electron mobility, and also prevents excessive Y6 aggregation at elevated temperatures. This work reveals a selection criterion for commercial and low‐cost insulating materials as an additive to effectively improve the performance and stability of OSCs simultaneously.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
