Morphology Regulation Is Achieved by Volatile Solid Additives in Halogen-Free Solvents to Fabricate Efficient Polymer Solar Cells

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Фев. 26, 2025

The meticulous control of micromorphology in high power conversion efficiency (PCE) polymer solar cells (PSCs) typically relies on halogenated solvents, which pose serious threats to both environmental sustainability and human health. In this work, a green efficient method for fabricating PCE PSCs with halogen-free solvents is developed. By introducing volatile solid additives 1-bromo-2,6-dichlorobenzene (DIB) 1-bromo-2,3,5-trichlorobenzene (TIB) into toluene the aggregation behaviors PM6:L8-BO were meticulously regulated, forming distinct fibrous morphology; detail, vertical direction exhibited pattern acceptor enrichment at top donor bottom, leads enhanced exciton dissociation efficiency, improved charge transport performance, significantly reducing recombination, finally PCEs, as maximum PCEs 18.56 17.67%, respectively, are notably higher than those devices without additives. Furthermore, since can be completely removed from active layer, additive-treated exhibit superior morphology photovoltaic stability. This therefore, unveils straightforward environmentally friendly preparing PSCs, instrumental facilitating large-scale commercialization PSC technology.

Язык: Английский

Rational Design of Terpolymer Acceptors for High-Efficiency All-Polymer Solar Cells

Chemical Communications, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Three terpolymers were developed via a ternary polymerization strategy. Owing to appropriate aggregation behavior and improved compatibility, the J2-based all polymer device offers an excellent power conversion efficiency up 16.5%.

Язык: Английский

Organic solar cells: beyond 20%

Science China Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 30, 2025

Язык: Английский