Attaining 19.12% solar cell efficiency for non-fused ring electron acceptors via multi-dimensional charge transport (opens in new tab)

Non-fused ring electron acceptors (NFREAs) exhibit substantial commercial application potential. Nevertheless, their subpar electron transport performance results in slightly low power conversion efficiencies (PCEs) of organic solar cells (OSCs). Herein, we put forward an innovative supramolecular side-chain-induced multi-dimensional charge transport strategy to exploit two NFREAs 3TT-Ph2 and 3TT-Ph4 with terminal phenyl/fluorinated phenyl side chains. In comparison to the unfunctionalized co...