Tandem organic solar cells with 20.6% efficiency enabled by reduced voltage losses
Chinese Academy of Sciences · Soochow University · +7 more institutions
Abstract
Large voltage losses are the main obstacle for achieving high efficiency in organic solar cells (OSCs). Here we construct ternary OSCs by introducing an asymmetric small molecule acceptor AITC into PBDB-TCl : BTP-eC9 system and demonstrate the effectiveness in simultaneously decreasing energy disorder and non-radiative voltage losses. It is found that the introduction of AITC can modify domain size and increase the degree of crystallinity, which enhances open-circuit voltage and power conversion efficiency (19.1%, certified as 18.9%). Inspiringly, an output efficiency of 20.6% of the constructed tandem OSCs based on PBDB-TCl : AITC : BTP-eC9 ternary active layer output a recorded efficiency of 20.6% (certified…
Citation impact
- FWCI
- 25.55
- Percentile
- 100%
- References
- 48
Authors
11- JWJianqiu Wang
Chinese Academy of Sciences, Soochow University, Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry
- ZZZhong ZhengCorresponding
Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, University of Science and Technology Beijing
- PBPengqing Bi
Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry
- ZCZhihao Chen
Shandong University, Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, State Key Laboratory of Crystal Materials
- YWYafei Wang
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
Topics & keywords
- Tandem
- Ternary operation
- Energy conversion efficiency
- Materials science
- Open-circuit voltage
- Acceptor
- Voltage
- Photovoltaic system
- Affordable and clean energy
Funding
- NNNational Natural Science Foundation of ChinaAwards: 51973146, 2019B030302007, 51703041, 51773142, BK20190099
- GOGovernment of Jiangsu ProvinceAward: BE2022021
- NSNatural Science Foundation of Jiangsu ProvinceAwards: BE2022021, 51773142, 51973146, BK20190099
- PAPriority Academic Program Development of Jiangsu Higher Education InstitutionsAwards: 51773142, BK20190099, 51973146
- CICollaborative Innovation Center of Suzhou Nano Science and Technology
- BNBeijing National Laboratory for Molecular Sciences