Chlorinated Spiroconjugated Fused Extended Aromatics for Multifunctional Organic Electronics
Dong Meng, Rui Wang, Janice B. Lin, Jonathan Lee Yang, Selbi Nuryyeva, Yu‐Che Lin, Shuai Yuan, Zhao‐Kui Wang, Elizabeth Zhang, Chengyi Xiao, Danlei Zhu, Lang Jiang, Yepin Zhao, Zhenxing Li, Chenhui Zhu, K. N. Houk, Yang Yang
Abstract
Abstract The synthesis of a new molecule, SFIC‐Cl, is reported, which features enhanced π‐electron delocalization by spiroconjugation and narrowed bandgap by chlorination. SFIC‐Cl is integrated into a single‐crystal transistor (OFET) and organic light‐emitting diode (OLED). The material demonstrates remarkable transport abilities across various solution‐processed OFETs and retains efficient radiance in a near‐infrared OLED emitting light at 700 nm. Furthermore, the intermolecular multi‐dimensional connection of SFIC‐Cl enables the fabrication of a single‐component large‐area (2 × 2 cm 2 ) near‐infrared OLED by spin‐coating. The SFIC‐Cl‐acceptor‐based solar cell shows excellent power conversion efficiency of 10.16% resulting from the broadened and strong absorption and well‐matched energy levels. The study demonstrates that chlorinated spiroconjugated fused systems offer a novel direction toward the development of high‐performance organic semiconductor materials for hybrid organic electronic devices.