Alleviating excessive aggregation of a non-fullerene acceptor by delaying and shortening the crystallization time to reduce the energy loss of ternary organic solar cells
Jiaqi Pan, Jinan Guan, Zehao Wang, Rui Zhang, Yingying Fu, Xinhong Yu, Qiang Zhang, Yanchun Han
Abstract
PYIT was added to the PM6:Y6 system to delay and shorten the crystallization time of Y6. The ternary strategy has been successfully proven to increase the D/A interface area for faster exciton dissociation. The E loss decreased (0.559 eV to 0.539 eV), and the PCE increased (15.40% to 17.05%).
Topics & Concepts
Ternary operationCrystallizationMaterials scienceFullereneAcceptorOrganic solar cellDissociation (chemistry)Chemical engineeringChemical physicsPhysical chemistryOrganic chemistryComposite materialChemistryPolymerCondensed matter physicsComputer sciencePhysicsProgramming languageEngineeringOrganic Electronics and PhotovoltaicsPerovskite Materials and ApplicationsConducting polymers and applications