19.5% Efficiency organic solar cells enabled by a direct C–H arylation-derived wide-bandgap small-molecule guest donor
Bin Hu, Shenzheng Gao, Xin Wang, Fan Cao, Yiyu Chen, Jianqi Zhang, Laju Bu, Xin Song, Guanghao Lu
Abstract
A tin-free asymmetric small-molecule guest donor ( o PhFO) with a wide bandgap allows PM6: o PhFO:BTP-ec9 ternary OSCs to reach a champion efficiency of 19.5% by optimizing blend morphology and vertical phase separation as well as reducing energy loss.
Topics & Concepts
Band gapMaterials scienceSmall moleculeTernary operationOrganic solar cellChampionMoleculeOptoelectronicsTinPhase (matter)NanotechnologyChemistryOrganic chemistryComputer scienceComposite materialMetallurgyLawPolymerBiochemistryPolitical scienceProgramming languageOrganic Electronics and PhotovoltaicsPerovskite Materials and ApplicationsConducting polymers and applications