Superficial fluoropolymer layers for efficient light-emitting diodes

► This work is on the use of fluoropolymers in organic-based optoelectronic devices. ► The insertion of a PTFE interlayer results in an improved charge confinement. ► PTFE-based devices have been characterized and their efficiency results enhanced. ► PTFE behaves as a chemical zipper between two incompatible heterogeneous media. ► We observe an extended device longevity by a factor of 7.