Asymmetric chlorination of A<sub>2</sub>–A<sub>1</sub>–D–A<sub>1</sub>–A<sub>2</sub> type non-fullerene acceptors for high-voltage organic photovoltaics
Peiqing Cong, Xianda Li, Ailing Tang, Jiang Wu, Jianhua Chen, Lie Chen, Erjun Zhou
Abstract
We synthesized the first asymmetric A 2 –A 1 –D–A 1 –A 2 type small molecule nonfullerene acceptor, HCl-BTA3 , by chlorination on one side of the A 1 unit, yielding a high open-circuit voltage of 1.20 V and a satisfactory power conversion efficiency of 11.2%.
Topics & Concepts
AcceptorFullereneEnergy conversion efficiencyOrganic solar cellCarboxylateOpen-circuit voltageMoleculeChemistryDipolePhotovoltaicsPolymerVoltagePhotovoltaic systemMaterials scienceOrganic chemistryOptoelectronicsCondensed matter physicsBiologyQuantum mechanicsPhysicsEcologyOrganic Electronics and PhotovoltaicsConducting polymers and applicationsAdvanced battery technologies research