Significantly enhanced thermal stability from a new kind of n-type organic semiconductor DFA4: a fully fused F8IC

Abstract

By introducing two amino groups in the central core of well-recognized small molecule acceptor F8IC for triggering a further intramolecular cyclization, a fully fused molecule DFA4 was realized. It exhibits typical n-type semiconductive character in devices of both organic photovoltaics (OPVs) and organic field effect transistors (OFETs). Moreover, the thermal stability of DFA4 was drastically enhanced compared with F8IC, suggesting its strong potential in fabricating organic electronics with longer lifetime.