ORGANIC LIGHT EMITTING DIODE STRUCTURE AND METHOD OF FORMING SAME

There is provided organic light emitting diode (OLED) device that include an organic electroluminescent layer formed between a first electrode and a second electrode. The organic electroluminescent layer is formed of a photo-crosslinkable liquid having dichroic molecules therein, and has a grating pattern defined therein by exposure of regions of the organic electroluminescent layer to a light beam. The refractive index of the exposed regions of the organic electroluminescent layer varies across the grating pattern. A method for fabricating the OLED device is also provided that includes providing the organic electroluminescent layer and defining the grating pattern in the photo-crosslinkable liquid by illuminating regions of the organic electroluminescent layer with a light beam. The refractive index of the defined grating pattern is tuned by adjusting the dosage of light to which the photo-crosslinkable liquid is exposed.