The effect of silane interlayer for high efficiency and long lifetime in polymer light emitting diodes

The effect of silane interlayer between poly(3,4-ethylenedioxythiophene:poly(styrenesulfonate) (PEDOT) and light emitting layer (EML) on the efficiency and lifetime of polyfluorene-based polymer light emitting diodes was investigated. γ-Methacryloxypropyl trimethoxysilane (MPS) was used as an interlayer and the efficiency of the device was enhanced by MPS. In addition, the lifetime of polymer device was also improved significantly by introducing a silane interlayer between PEDOT and EML.