Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 7, Issue 35, Pages 10795-10801Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9tc02781e
Keywords
-
Funding
- National Key Research and Development Program of China [2017YFA0206600]
- National Natural Science Foundation of China (NSFC) [21773045]
- Chinese Academy of Sciences (100 Top Young Scientists Program)
- NSFC [21674006]
- 111 Project [B14009]
Ask authors/readers for more resources
The cathode interlayer plays a key role in the photovoltaic performance in organic solar cells. In this work, we demonstrate that polydopamine/ZnO can be used as efficient electron transport layers (ETL) in inverted non-fullerene organic solar cells. In comparison to the devices with the ZnO ETL, the power conversion efficiency of inverted PBDBT:ITIC solar cells with the PDA/ZnO ETL can be boosted from 10.15% to 11.14%, due to the simultaneously enhanced open-circuit voltage, short-circuit current and fill factor. The increased photovoltaic performance is mainly attributed to a faster charge extraction ability at the cathode interface and longer carrier lifetime, confirmed by transient optoelectrical analyses. Revealed by conductive-AFM and KPFM coupled with absorption spectroscopy, high optical transmittance and vertical electrical conductivity with a suitable low work function and a doping effect induced by PDA were observed in the PDA modified ZnO, which makes it a good ETL material for inverted solar cells and indicated universal applicability. This work provides a new approach to modify the cathode interfacial properties towards high efficiency organic solar cells with non-fullerene acceptors.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available