A halogenated volatile additive strategy for regulating crystallization kinetics and enabling 20.40% efficiency polymer solar cells with low non-radiative recombination energy loss
Changjiang Li, Min Deng, Haonan Chen, Yuwei Duan, Chentong Liao, Zeqin Chen, Qiang Peng
Abstract
Increasing the weight of halogen atoms of additives results in balanced crystallization and optimal morphology with suppressed energy disorder, realizing 20.40% efficiency with a Δ E non-rad of 0.189 eV and E loss of 0.500 eV in polymer solar cells.
Topics & Concepts
KineticsRadiative transferRecombinationPolymerMaterials scienceCrystallizationNon-radiative recombinationChemical physicsChemical engineeringOptoelectronicsChemistryThermodynamicsPhysicsOpticsSemiconductor materialsComposite materialBiochemistrySemiconductorEngineeringGeneQuantum mechanicsOrganic Electronics and PhotovoltaicsConducting polymers and applicationsSynthesis and properties of polymers