Breaking the symmetry of interfacial molecules with push–pull substituents enables 19.67% efficiency organic solar cells featuring enhanced charge extraction
Lei Liu, Fengyi Yu, Hu Dingqin, Xue Jiang, Peihao Huang, Yulu Li, Gengsui Tian, Hongliang Lei, Shijia Wu, Kaihuai Tu, Chen Chen, Tiange Gu, Yao Chen, Tainan Duan, Zeyun Xiao
Abstract
The unsymmetrical push–pull strategy in the interfacial layer enables fast charge extraction and suppresses surface and trap-assisted recombination, achieving a 19.67% efficiency in binary single junction organic solar cells.
Topics & Concepts
DipoleCharge (physics)AcceptorSymmetry (geometry)Organic solar cellChemical physicsSymmetry breakingMoleculeMoment (physics)Materials scienceExtraction (chemistry)Computational chemistryChemistryMolecular physicsCondensed matter physicsPhysicsOrganic chemistryClassical mechanicsQuantum mechanicsPolymerMathematicsGeometryOrganic Electronics and PhotovoltaicsMolecular Junctions and NanostructuresChalcogenide Semiconductor Thin Films