Chlorinated Spiroconjugated Fused Extended Aromatics for Multifunctional Organic Electronics

The synthesis of a new molecule, SFIC-Cl, is reported, which features enhanced pi-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 x 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.

Automated summary

The study reports a new molecule SFIC-Cl, which exhibits significant potential in organic semiconductor materials and performs well in different devices. SFIC-Cl also demonstrates promising applications, particularly in solar cells.