23.2: An Efficient Stacked OLED with Double-Sided Light Emission

Abstract

Abstract

P‐202: Improvement of the Difference in Light Output from both sides of Dual Emission OLEDs

“…The structural of organic light-emitting diodes (OLEDs) is more suitable for dual emission display than Liquid Crystal Display (LCD). Depending on the electrode structure, OLEDs can be divided into top-emitting, bottom-emitting and dual-emitting types [2] . Among them, dual emission display type OLED utilizes semi-transparent cathode and transparent anode to emit from both sides simultaneously.…”

Aromatic Derivatives Based Materials for Optoelectronic Applications

“…The research was focalised on different topics such as: effect of doping of the organic semiconductor to increase the "transparency" of the energetic barrier to the injection of electron from the contact [6], influence of the trapped and interfacial charges generated in multilayer organic heterostructures on the properties of the device [7], charge tunnelling in multilayer stack and at the interface between organic and anode [8], influence of the thickness and doping of the emission layer on the properties of OLEDs [9], injection of the charge carriers from the electrodes and their migration in correlation with different types of cathodes [10][11][12][13], transport phenomena in organics [14; 15], stacked geometry for efficient double-sided emitting OLED [16], graded mixed layer as active layer to replace heterojunction in OLEDs [17]. The awarding in 2000 of the Nobel prize for researches in the field of conducting polymers has stimulated the development of OLEDs based on polymeric materials, application emphasised years before [18], opening the way of reducing the applied voltages (< 10 V) and increasing the brightness and lifetime.…”