3D‐Architectured Acceptor with High Photoluminescence Quantum Yield and Moderate Crystallinity for High‐efficiency Organic Solar Cells with Low Voltage Loss

This study outlines a molecular design approach that entails integrating 3D structural motifs into the central core or terminal groups of fused-ring acceptor molecules, specifically, LLZ1, LLZ2, and LLZ3-by incorporating a 3D architecture unit of norbornene. The objective is to modulate the aggregation behavior of these molecules by modifying their molecular structure, thereby enhancing the photoluminescence quantum yield (PLQY) values of the acceptor materials and reducing the non-radiative recombination voltage loss in the corresponding devices. Our research findings demonstrate that the introduction of norbornene units effectively suppresses excessive molecular aggregation and significantly improves the…

• NN
  National Natural Science Foundation of China

  Awards: 52173174, 52403234, 52433007
• NS
  Natural Science Foundation of Shandong Province

  Awards: ZR2022YQ45, ZR2024QB194