Efficient polymer light emitting diodes with metal fluoride/Al cathodes
- 23 July 2001
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 79 (5) , 563-565
- https://doi.org/10.1063/1.1389323
Abstract
We reported efficient polymer light emitting diodes with alkali and alkaline earth metal fluoride Al cathodes. The quantum efficiencies of these devices are more than two orders of magnitude higher than those in devices without fluoride layer, comparable to the best data reported with similar electroluminescent polymers. The mechanism of the metal fluoride/Al bilayer cathodes was also discussed based on photovoltaic, ac impedance, and photoluminescence efficiency measurement.Keywords
This publication has 19 references indexed in Scilit:
- Ultrathin layer alkaline earth metals as stable electron-injecting electrodes for polymer light emitting diodesJournal of Applied Physics, 2000
- ac impedance of polymer light-emitting electrochemical cells and light-emitting diodes: a comparative studyChemical Physics Letters, 1998
- Highly efficient and bright organic electroluminescent devices with an aluminum cathodeApplied Physics Letters, 1997
- Enhanced electron injection in organic electroluminescence devices using an Al/LiF electrodeApplied Physics Letters, 1997
- High performance photonic devices made with semiconducting polymersSynthetic Metals, 1996
- Measurement of absolute photoluminescence quantum efficiencies in conjugated polymersChemical Physics Letters, 1995
- Photosensitivity of MEH-PPV Sandwich Devices and Its Implication to Polymer Electronic StructureMolecular Crystals and Liquid Crystals, 1994
- Polyaniline as a transparent electrode for polymer light-emitting diodes: Lower operating voltage and higher efficiencyApplied Physics Letters, 1994
- Visible light emission from semiconducting polymer diodesApplied Physics Letters, 1991
- Light-emitting diodes based on conjugated polymersNature, 1990