Para-Sexiphenyl Based OLED Devices Grown on Light Sensitive Polymer Substrates

We report on OLEDs based on Para-sexiphenyl (PSP), which has been deposited by Hot Wall Epitaxy (HWE) on Polynorbornene, a photosensitive polymer. The used substrates have been pre-patterned by UV illumination leading to a changed surface polarity and consequently to an induced change of morphology and crystalline properties of the grown PHP. In particular we report on the optical properties of the devices which can be tuned by UV illumination of the polynorborene substrates.