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- Title
Efficient All-Polymer Solar Cells Enabled by Interface Engineering.
- Authors
Zhang, Guoping; Wang, Lihong; Zhao, Chaoyue; Wang, Yajie; Hu, Ruiyu; Che, Jiaxu; He, Siying; Chen, Wei; Cao, Leifeng; Luo, Zhenghui; Qiu, Mingxia; Li, Shunpu; Zhang, Guangye
- Abstract
All-polymer solar cells (all-PSCs) are organic solar cells in which both the electron donor and the acceptor are polymers and are considered more promising in large-scale production. Thanks to the polymerizing small molecule acceptor strategy, the power conversion efficiency of all-PSCs has ushered in a leap in recent years. However, due to the electrical properties of polymerized small-molecule acceptors (PSMAs), the FF of the devices is generally not high. The typical electron transport material widely used in these devices is PNDIT-F3N, and it is a common strategy to improve the device fill factor (FF) through interface engineering. This work improves the efficiency of all-polymer solar cells through interfacial layer engineering. Using PDINN as the electron transport layer, we boost the FF of the devices from 69.21% to 72.05% and the power conversion efficiency (PCE) from 15.47% to 16.41%. This is the highest efficiency for a PY-IT-based binary all-polymer solar cell. This improvement is demonstrated in different all-polymer material systems.
- Subjects
SOLAR cells; PHOTOVOLTAIC power systems; SOLAR cell efficiency; POLYMERS; ELECTRON transport; ELECTRON donors; ENGINEERING
- Publication
Polymers (20734360), 2022, Vol 14, Issue 18, pN.PAG
- ISSN
2073-4360
- Publication type
Article
- DOI
10.3390/polym14183835