Triplet State Suppression for Energy Loss Reduction in 20% Nonhalogenated Solvent Processed Binary Organic Solar Cells
Hong Kong Polytechnic University · Hong Kong University of Science and Technology · +2 more institutions
Abstract
Abstract Boosting power conversion efficiency (PCE) of organic solar cells (OSCs) has been restricted by its undesirably high energy loss, especially for those nonhalogenated solvent‐processed ones. Here,a dichloro‐methoxylated terminal group in an asymmetric small molecular acceptor design, which realizes a significantly reduced non‐radiative energy loss (0.179 eV) compared to its symmetric counterpart (0.202 eV), is reported. Consequently, the device efficiency is improved by up to 20% for PM6:BTP‐eC9‐4ClO, without sacrificing the photon harvest or charge transport ability of the control system PM6:BTP‐eC9. Further characterizations reveal the asymmetric acceptor BTP‐eC9‐4ClO's blend film demonstrates a…
Citation impact
- FWCI
- 40.48
- Percentile
- 100%
- References
- 75
Authors
8- RMRuijie MaCorresponding
Hong Kong Polytechnic University
- BZBosen Zou
Hong Kong University of Science and Technology, University of Hong Kong
- YHYulong Hai
Hong Kong University of Science and Technology, University of Hong Kong
- YLYongmin Luo
Hong Kong University of Science and Technology, University of Hong Kong
- ZLZhenghui LuoCorresponding
Shenzhen University
Topics & keywords
- Organic solar cell
- Materials science
- Acceptor
- Energy conversion efficiency
- Solvent
- Binary number
- Optoelectronics
- Photochemistry
- Affordable and clean energy
Funding
- PRPaleontological Research InstitutionAward: Q‐CD7X
- NNNational Natural Science Foundation of ChinaAwards: 52303249, 22309119
- GSGuangdong Science and Technology DepartmentAward: 2021QN02C110
- STScience, Technology and Innovation Commission of Shenzhen MunicipalityAward: JCYJ20200109105003940
- SSShenzhen Science and Technology Innovation ProgramAwards: RCBS20221008093225021, ZDSYS20210623091813040