Organic Solar Cells with Over 19% Efficiency Enabled by a 2D‐Conjugated Non‐Fullerene Acceptor Featuring Favorable Electronic and Aggregation Structures
Chinese Academy of Sciences · Beijing National Laboratory for Molecular Sciences · +5 more institutions
Abstract
Abstract The π ‐expansion of non‐fullerene acceptors is a promising method for boosting the organic photovoltaic performance by allowing the fine‐tuning of electronic structures and molecular packing. In this work, highly efficient organic solar cells (OSCs) are fabricated using a 2D π ‐expansion strategy to design new non‐fullerene acceptors. Compared with the quinoxaline‐fused cores of AQx‐16, the π ‐expanded phenazine‐fused cores of AQx‐18 induce more ordered and compact packing between adjacent molecules, affording an optimized morphology with rational phase separation in the blend film. This facilitates efficient exciton dissociation and inhibited charge recombination. Consequently, a power conversion…
Citation impact
- FWCI
- 23.93
- Percentile
- 100%
- References
- 78
Authors
10- KLKerui Liu
Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, University of Chinese Academy of Sciences
- YJYuanyuan Jiang
Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, University of Chinese Academy of Sciences
- FLFeng LiuCorresponding
Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry
- GRGuangliu Ran
Beijing Normal University
- FHFei Huang
Sichuan University
Topics & keywords
- Materials science
- Organic solar cell
- Fullerene
- Acceptor
- Energy conversion efficiency
- Ternary operation
- Conjugated system
- Photovoltaic system
- Affordable and clean energy