Polymer semiconductors composed of a carbon-based π conjugated backbone have been
studied for several decades as active layers of multifarious organic electronic devices. They …

Conspectus Over the past few years, the development of new materials has contributed to
rapid increases in the power conversion efficiencies (PCEs) of organic photovoltaic (OPV) …

Raising the lowest unoccupied molecular orbital (LUMO) energy level of Y‐type non‐
fullerene acceptors can increase the open‐circuit voltage (Voc) and thus the photovoltaic …

The rapid development of low-bandgap (LBG) nonfullerene acceptors and wide-bandgap
(WBG) copolymer donors in recent years has boosted the power conversion efficiency (PCE) …

The crystallinity and intermolecular interaction among small molecules are enhanced in
order to achieve reasonable phase segregation between the donor and acceptor in all-small …

The absence of near-infrared (NIR) solar cells with high open circuit voltage (V oc) and
external quantum efficiency (EQE) has impeded progress toward achieving organic …

The pursuit of low‐cost, flexible, and lightweight renewable power resources has led to
outstanding advancements in organic solar cells (OSCs). Among the successful design …

Halogenation is a very efficient chemical modification method to tune the molecular energy
levels, absorption spectra and molecular packing of organic semiconductors. Recently, in …

We synthesized a chlorinated benzothiadiazole-T4 polymer donor PBT4T-Cl, in which a
chlorine atom had been introduced at the 4 position in the middle thiophene unit to fine-tune …

This work summarizes recent developments in polymer solar cells (PSCs) prepared by a
chlorination strategy. The intrinsic property of chlorine atoms, the progress of chlorinated …