Constructing a Strongly Absorbing Low‐Bandgap Polymer Acceptor for High‐Performance All‐Polymer Solar Cells
Chinese Academy of Sciences · Beijing National Laboratory for Molecular Sciences · +4 more institutions
Abstract
Abstract All‐polymer solar cells (all‐PSCs) offer unique morphology stability for the application as flexible devices, but the lack of high‐performance polymer acceptors limits their power conversion efficiency (PCE) to a value lower than those of the PSCs based on fullerene derivative or organic small molecule acceptors. We herein demonstrate a strategy to synthesize a high‐performance polymer acceptor PZ1 by embedding an acceptor–donor–acceptor building block into the polymer main chain. PZ1 possesses broad absorption with a low band gap of 1.55 eV and high absorption coefficient (1.3×10 5 cm −1 ). The all‐PSCs with the wide‐band‐gap polymer PBDB‐T as donor and PZ1 as acceptor showed a record‐high PCE of…
Citation impact
- FWCI
- 29.08
- Percentile
- 100%
- References
- 45
Authors
9- ZZZhiguo ZhangCorresponding
Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences
- YYYankang Yang
Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, University of Chinese Academy of Sciences
- JYJia Yao
Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences
- LXLing‐Wei Xue
Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences
- SCShanshan Chen
Ulsan National Institute of Science and Technology
Topics & keywords
- Polymer
- Band gap
- Materials science
- Acceptor
- Polymer solar cell
- Optoelectronics
- Composite material
- Physics
- Affordable and clean energy