Qifa Zheng

Donor‐Selective NiCo‐LDH Templating Directs Polymer Assembly for Enhanced Exciton Transport in Efficient Organic Solar Cells

ABSTRACT Organic solar cells (OSCs) have achieved remarkable progress, yet improving exciton utilization in polymer donors remains challenging due to their intrinsically limited exciton diffusion length ( L D ). Here, we report a donor‐selective templating strategy based on few‐l...

Precursor‐Level Molecular Coupling Enables High‐Fill‐Factor Wide‐Bandgap Perovskite Solar Cells and 29.63% All‐Perovskite Tandems

ABSTRACT Wide‐bandgap (WBG) perovskites with a ∼1.78 eV bandgap are essential for monolithic all‐perovskite tandem cells, yet their efficiency and stability are limited by complex precursor chemistry, uncontrolled crystallization, defect formation, and photoinduced halide segrega...

Regulating H‐Aggregation via a Thiazole‐Modified Acceptor‐Based Packing Reshaper Toward Highly Efficient and Stable Organic Solar Cells

ABSTRACT Organic solar cells (OSCs) based on non‐fullerene acceptors have achieved power conversion efficiencies (PCEs) exceeding 20%. However, their long‐term stability remains limited by uncontrolled molecular aggregation and morphological degradation in bulk heterojunction (BH...

Ordered J‐Aggregation Directed by Inner Alkyl Chains Enables Additive‐ and Annealing‐Free Organic Solar Cells With 20.73% Efficiency

ABSTRACT Molecular aggregation behavior of non‐fullerene acceptors (NFAs) plays a pivotal role in the photovoltaic performance of organic solar cells (OSCs). In Y‐series NFAs, excessive H‐like core contacts may increase packing disorder, while terminal group‐mediated J‐like inter...