Side-Chain Isomerization on an n-type Organic Semiconductor ITIC Acceptor Makes 11.77% High Efficiency Polymer Solar Cells
University of Chinese Academy of Sciences · Institute of Chemistry · +4 more institutions
Abstract
Low bandgap n-type organic semiconductor (n-OS) ITIC has attracted great attention for the application as an acceptor with medium bandgap p-type conjugated polymer as donor in nonfullerene polymer solar cells (PSCs) because of its attractive photovoltaic performance. Here we report a modification on the molecular structure of ITIC by side-chain isomerization with meta-alkyl-phenyl substitution, m-ITIC, to further improve its photovoltaic performance. In a comparison with its isomeric counterpart ITIC with para-alkyl-phenyl substitution, m-ITIC shows a higher film absorption coefficient, a larger crystalline coherence, and higher electron mobility. These inherent advantages of m-ITIC resulted in a higher power…
Citation impact
- FWCI
- 100.43
- Percentile
- 100%
- References
- 69
Authors
8- YYYankang YangCorresponding
University of Chinese Academy of Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences
- ZZZhiguo Zhang
Chinese Academy of Sciences, Institute of Chemistry, Beijing National Laboratory for Molecular Sciences
- HBHaijun Bin
Beijing National Laboratory for Molecular Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Institute of Chemistry
- SCShanshan Chen
Ulsan National Institute of Science and Technology
- LGLiang Gao
Beijing National Laboratory for Molecular Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Institute of Chemistry
Topics & keywords
- Acceptor
- Isomerization
- Band gap
- Side chain
- Alkyl
- Polymer solar cell
- Photovoltaic system
- Materials science
- Affordable and clean energy