Abstract
SHS investigation development is considered from the geographical and historical viewpoint. 3 stages are described. Within Stage 1 the work was carried out in the Department of the Institute of Chemical Physics in Chernogolovka where the scientific discovery had been made. At Stage 2 the interest to SHS arose in different cities and towns of the former USSR. Within Stage 3 SHS entered the international scene. Now SHS processes and products are being studied in more than 50 countries.
Abstract
This chapter gives comprehensive description of the light outcoupling technologies for organic light-emitting diodes (OLEDs). Some state of art techniques will be introduced in detail. This chapter consists of three parts. The first part analyzes the light distribution in OLED with two models: ray optics model and dipole interference model. The second part introduces the external extraction structures, which can extract the light trapped in the substrate. The last part describes the more effective outcoupling technologies, the internal extraction structures, which can couple out not only the light in the substrate but also the light trapped in the active layers of the device. Finally, a conclusion will be given.
Keywords:
Air mode, Dipole interference, External extraction structure, Internal extraction structure, Metal nanoparticles, Microlens array, Nanostructured random scattering layer, Outcoupling, Perforated hole injection layer, Photonic crystal, Ray optics, Scattering film, Substrate mode, Surface plasmon, Total internal reflection, Waveguide mode.
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Authors:Bentham Science Books