Modeling and Analysis of Double Layer Motheye Anti Reflective Coatings on Organic Light Emitting Diode

摘要

In this work modeling of double layer motheye anti-reflective coating (DLAR) on organic light emitting diode (OLED) is presented. Finite difference time domain method (FDTD) and Fresnel reflection theory is used to study the reflection and transmission of light of Organic Light Emitting Diode (OLED) using Anti-reflective coatings (ARC). The double layer motheye anti-reflective coatings are incorporated on the surface of glass substrate of an OLED. This is done to reduce the losses existing in OLEDs substrate-air interface. The refractive index (RI) of the top and bottom layer of ARC is engineered and the thickness of the top and bottom layer anti-reflective coatings is modelled using Fresnel's reflection theory. The effect of double layer motheye ARC on OLED for enhanced far field intensity is analysed. It is found that the far field electric intensity of DLAR based OLED has a significant enhancement compared to OLED with Single layer Antireflective coatings on the glass substrate.