Energy‐Level Modulation of Small‐Molecule Electron Acceptors to Achieve over 12% Efficiency in Polymer Solar Cells
Chinese Academy of Sciences · University of Chinese Academy of Sciences · +4 more institutions
Abstract
Fine energy-level modulations of small-molecule acceptors (SMAs) are realized via subtle chemical modifications on strong electron-withdrawing end-groups. The two new SMAs (IT-M and IT-DM) end-capped by methyl-modified dicycanovinylindan-1-one exhibit upshifted lowest unoccupied molecular orbital (LUMO) levels, and hence higher open-circuit voltages can be observed in the corresponding devices. Finally, a top power conversion efficiency of 12.05% is achieved. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues…
Citation impact
- FWCI
- 172.41
- Percentile
- 100%
- References
- 51
Authors
7- SLSunsun Li
Chinese Academy of Sciences, University of Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, State Key Laboratory of Polymer Physics and Chemistry
- LYLong Ye
North Carolina State University
- WZWenchao Zhao
State Key Laboratory of Polymer Physics and Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry
- SZShaoqing Zhang
Institute of Chemistry, Beijing National Laboratory for Molecular Sciences, Chinese Academy of Sciences, State Key Laboratory of Polymer Physics and Chemistry
- SMS. Mukherjee
North Carolina State University
Topics & keywords
- Materials science
- Modulation (music)
- Polymer
- Electron
- Molecule
- Polymer solar cell
- Optoelectronics
- Small molecule
- Affordable and clean energy