Efficient organic blue light-emitting devices with double confinement on terfluorenes with ambipolar carrier transport properties
Journal
Advanced Materials
Journal Volume
16
Journal Issue
1
Pages
61-65
Date Issued
2004-01
Author(s)
Abstract
Various device architectures employing the unique optical and electrical properties of terfluorenes and their influences on the characteristics of blue organic light emitting devices (OLED) were investigated. The devices were fabricated on glass substrates with the typical structure of multiple organic layers sandwiched between the bottom indium tin oxide (ITO) anode and the top metal cathode. The cathode used consisted of a thin LiF layer as the electron injection layer and a thick Al layer as the metal electrode. Single-layer devices exhibited pure blue electroluminescence (EL) from terfluorenes with a low quantum efficiency of only ∼0.15% photon/electron.
SDGs
Other Subjects
Carrier transport properties; Hole-transport layer (HTL); Organic light-emitting devices (OLED); Amorphous films; Charge transfer; Conductive plastics; Electrodes; Fluorine containing polymers; Glass transition; Molecular structure; Oxidation; Photoluminescence; Quantum efficiency; Reduction; Light emitting diodes
Type
journal article