Binary Organic Solar Cells with 19.2% Efficiency Enabled by Solid Additive
Chinese Academy of Sciences · State Key Laboratory of Polymer Physics and Chemistry · +5 more institutions
Abstract
Morphology optimization is critical for achieving high efficiency and stable bulk-heterojunction (BHJ) organic solar cells (OSCs). Herein, the use of 3,5-dichlorobromobenzene (DCBB) with high volatility and low cost to manipulate evolution of the BHJ morphology and improve the operability and photostability of OSCs is proposed. Systematic simulations reveal the charge distribution of DCBB and its non-covalent interaction with the active layer materials. The addition of DCBB can effectively tune the aggregation of PBQx-TF:eC9-2Cl during film formation, resulting in a favorable phase separation and a reinforced molecular packing. As a result, a power conversion efficiency of 19.2% (certified as 19.0% by the…
Citation impact
- FWCI
- 56.55
- Percentile
- 100%
- References
- 47
Authors
11- JWJianqiu Wang
Chinese Academy of Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry
- YWYafei Wang
Chinese Academy of Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, University of Chinese Academy of Sciences
- PBPengqing Bi
Chinese Academy of Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry
- ZCZhihao Chen
Chinese Academy of Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry
- JQJiawei Qiao
Shandong University, State Key Laboratory of Crystal Materials
Topics & keywords
- Materials science
- Organic solar cell
- Active layer
- Energy conversion efficiency
- Photovoltaic system
- Nanotechnology
- Chemical engineering
- Optoelectronics
- Affordable and clean energy