Abstract
AbstractIn this article, we are explaining the electromagnetic models to simulate the effect of plasmon coupling at metal cathode and to analyze the OLED with nano-grated cathode for reduction of surface plasmon loss. The modeling and analysis of the bottom-emitting organic light-emitting diode (OLED) using nano-grating metal cathode structures is presented. OLED is modeled and simulated by using finite difference time domain (FDTD) approach. The light extraction efficiency (LEE) has been improved by introducing nano-grating cathode structure that reduces surface plasmon (SP) losses. The proposed OLED without grated cathode and the device with nano-grated cathode comparison is shown. The intensity of far field is also studied for various cathode materials on an OLED device. It was found to be optimum for a wavelength of 540 nm for aluminum as a cathode material.KeywordsOrganic light-emitting diodeFar-field intensityLight extraction efficiencyFinite difference time domain
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