Organic electroluminescent diodes

TLDR

The device is a double‑layer organic electroluminescent diode fabricated by vapor deposition, with an indium‑tin‑oxide anode and Mg:Ag cathode enabling efficient hole and electron injection and recombination at the organic interface. It achieves a 1 % external quantum efficiency, 1.5 lm W⁻¹ luminous efficiency, and over 1000 cd m⁻² brightness at less than 10 V.

Abstract

A novel electroluminescent device is constructed using organic materials as the emitting elements. The diode has a double-layer structure of organic thin films, prepared by vapor deposition. Efficient injection of holes and electrons is provided from an indium-tin-oxide anode and an alloyed Mg:Ag cathode. Electron-hole recombination and green electroluminescent emission are confined near the organic interface region. High external quantum efficiency (1% photon/electron), luminous efficiency (1.5 lm/W), and brightness (>1000 cd/m2) are achievable at a driving voltage below 10 V.