Suppressing electron-phonon coupling and energy loss in organic solar cells by modulating donor-acceptor penetrated-interface
Guangzhou University · Guangzhou Institute of Advanced Technology · +9 more institutions
Abstract
Organic solar cells (OSCs) achieve 21% efficiency, yet non-radiative energy loss (qΔVnr) remains a critical barrier to further improve the open-circuit voltage (VOC). This loss is primarily governed by the optoelectronic properties of interfacial CT states, yet the precise role of electron-phonon coupling (EPC) is not fully resolved. Through analysis of three all-polymer OSCs and four small molecule acceptor (SMA)-based OSCs, we identify two donor-acceptor (D-A) interfacial mixed phases that foster two distinct CT states, establishing efficient charge generation. These two phases emerge from amorphous D-A entanglement, termed as Entangled (E-) interface, and the penetration of acceptor quasi-aggregates into…
Citation impact
- FWCI
- 38.86
- Percentile
- 100%
- References
- 56
Authors
16- YLYongmin Luo
Guangzhou University, Guangzhou Institute of Advanced Technology, University of Hong Kong
- YHYulong Hai
Guangzhou University, Guangzhou Institute of Advanced Technology, University of Hong Kong
- YLYao Li
Guangzhou University, Guangzhou Institute of Advanced Technology, University of Hong Kong
- RMRuijie Ma
Zhejiang International Studies University, Hong Kong Polytechnic University, Beihang University
- LWLunbi Wu
Guangdong Polytechnic Normal University
Topics & keywords
- Organic solar cell
- Acceptor
- Population
- Photovoltaic system
- Intramolecular force
- Amorphous solid
- Coupling (piping)
- Bottleneck
- Affordable and clean energy