New Insights into Structure-Property Relations for Non-Fullerene Acceptors for Organic Photovoltaics
Abstract
The development of fused-ring non-fullerene acceptors (NFAs) has led to recent advances inorganic photovoltaics. However, it may be possible to further improve the power conversionefficiencies (PCEs) of polymer:NFA solar cells, while there is certainly scope for improving thestability of these devices. Moreover, better understanding of the structure-property relationshipsis still required, while rather little sub-nm structural information is available on their blends withdonor polymers. We propose a two-year program to: synthesize new NFAs; characterize theiroptical, electrochemical, thermal, and photovoltaic properties; and use solid-state NMR methodsto investigate the molecular scale polymer:NFA interactions present in polymer:NFA bulkheterojunction blends. New NFAs will be synthesized in the Marder group; in particular, we willbroaden the range of terminal acceptor moieties used in these materials, as well as using newpatterns of peripheral substituents. The Marder group will also study the thermal and molecular level electronic properties of these materials, while their photovoltaic properties will beexamined through collaboration. Solid-state NMR studies will be carried out collaboratively,initially focusing on well-known high-PCE donor:NFA combinations, and expanding to includenew systems developed in this program.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 11, 2020
- Source ID
- N000142012167
Entities
People
- Seth Marder
Organizations
- Georgia Tech Research Corporation
- Office of Naval Research
- United States Navy