Realizing both improved luminance and stability in organic light-emitting devices based on a solution-processed inter-layer composed of MoO X and Au nanoparticles mixture.

Highlights: [•] Solution-processed Au nanoparticles (NPs):MoO X was used as an inter-layer in OLEDs. [•] The interface properties and good device stability were investigated. [•] The improved electrical properties were achieved due to modification of interface. [•] Localized surface plasmon induced efficiency enhancement was realized due to Au NPs. [Copyright &y& Elsevier]