Organic light emitting diodes with environmentally and thermally stable doped graphene electrodes

Abstract

We present a comparative study of the environmental and thermal stability of graphene charge transfer doping using molybdenum–trioxide (MoO₃), vanadium–pentoxide (V₂O₅) and tungsten–trioxide (WO₃). Our results show that all these metal oxides allow a strong and stable p-type doping of graphene, as well as functioning as effective hole-injection layers for highly efficient organic light emitting diodes.