To study the electrical characteristics of LEDs based on a single organic layer

Abstract

A numerical model has been presented for single layer electroluminescent device. In order to improve the electrical characteristic of electroluminescent devices, a simple model for the device characteristic with an insulating buffer layer at cathode is proposed. This model is based on Drift-Diffusion model and Poisson's equation. Model indicates that how the thickness of organic material/cathode interface layer affects to decrease the barrier height at the cathode and therefore increases the electron injection.