Optics Express · 2005 · 43 citations · 0 references
EngineeringElectrical EngineeringMaterials ScienceOptical MaterialsOptoelectronicsPhotonicsFar-field RegionsLight-emitting DiodesOrganic SemiconductorsPhotonic CrystalsPhotonic Device SimulationPhotonic MaterialsExtraction EfficiencyFar-field RadiationFinite Difference Time Domain For Photonic CrystalsFinite Difference Time Domain ModelingFinite Difference Time Domain SimulationLight Extraction EfficiencyNear-field To Far-field TransformationOrganic Light-emitting Diodes
Utilizing the near- to far-field transformation based on the 3-D finite difference time domain (FDTD) method and Fourier transformation, the far-field profile of a photonic crystal organic light emitting diode is studied to understand the viewing angle dependence. The measured far-field profiles agree well with those of the simulation. The enhancement of the extraction efficiency in excess of 60% is observed for the optimized photonic crystal pattern.