Journal
SOLAR RRL
Volume 6, Issue 9, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/solr.202200424
Keywords
carriers; morphology; non-fullerene organic solar cells; power conversion efficiency; solvent vapor
Funding
- National Natural Science Foundation of China [61705003]
- Beijing Natural Science Foundation [2214068]
Ask authors/readers for more resources
Optimizing the morphology and interface contact through methanol vapor improves the performance and power conversion efficiency (PCE) of organic solar cells.
With the continuously increasing power conversion efficiency (PCE) in recent years, organic solar cells (OSCs) have attracted extensive attention as a new clean energy. Further improving PCE is an inevitable requirement for the OSC for commercialization. Herein, PM6: Y6-based non-fullerene organic solar cells are prepared by spin-coating active layer under methanol vapor atmosphere, methanol vapor regulates the active layer morphology and optimizes the molecular arrangement during the active layer film-forming process, and enriches the acceptor material Y6 on the active layer surface, improving the contact interface between active layer and cathode buffer layer. The improved active layer morphology and interface contact facilitates charge transport and extraction, boosts short-circuit current density and fill factor, and results in a better PCE of 17.59%, while the PCE of the control device without methanol vapor atmosphere is 16.37%. The results suggest that preparing an active layer under a solvent vapor atmosphere is a simple and efficient method to optimize the active layer morphology and improve the performance of organic solar cells, and this method is convenient to be extended to prepare large-area and high-efficiency organic photovoltaic devices.
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