Presentation Information
[10p-PA4-12]Relationship between Short-Range Order Structures and Electron-Transport Properties in Amorphous π-Extended Alkynylborane Compounds
〇Kentaro Mishiba1, Kohki Nagata1, Yuya Tanaka2, Hiroaki Iino3 (1.TIRI, 2.CLS Science Tokyo, 3.FIRST Science Tokyo)
Keywords:
Organic Semiconductor,Electron Transport,Molecular Aggregation Structure
Organic semiconductors possessing shallow LUMO levels (> −4.0 eV) generally suffer from severely hindered electron transport due to electron traps originating from oxygen and water in the environment. This remains a universal challenge in organic semiconductors. In contrast, a π-extended alkynylborane compound developed by our group exhibits nearly trap-free electron transport in its amorphous phase under ambient air conditions despite its shallow LUMO level (ca. −3.6 eV). In this study, the amorphous phase was investigated by wide-angle X-ray scattering (WAXS), revealing that its unique charge-transport properties may originate from a specific short-range ordered structure in the amorphous state.