Sharp Red Organic Light-Emitting Devices with Enhanced Efficiency
- 1 December 1999
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 38 (12B) , L1553
- https://doi.org/10.1143/jjap.38.l1553
Abstract
The fabrication of efficient and bright red light-emitting organic electroluminescent devices based on Eu-complex, having narrow spectral width, is achieved by enhancing the electron injection process through the use of LiF/Mg cathode. Devices with external quantum efficiency exceeding 1% and light output higher than 320 cd/m2 are presented. While the external quantum efficiency at 100 cd/m2 is comparable, the luminous efficiency is 2.6 times higher than that of the recent state-of-the-art devices based on the phosphorescent dye PtOEP.Keywords
This publication has 10 references indexed in Scilit:
- Organic–inorganic multilayer structures: a novel route to highly efficient organic light-emitting diodesSynthetic Metals, 1999
- Photoemission spectroscopy of LiF coated Al and Pt electrodesJournal of Applied Physics, 1998
- Highly efficient phosphorescent emission from organic electroluminescent devicesNature, 1998
- Bright blue organic light-emitting diode with improved color purity using a LiF/Al cathodeJournal of Applied Physics, 1998
- Organic Light Emitting Diodes with Reduced Spectral and Spacial HalfwidthsJapanese Journal of Applied Physics, 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
- Novel Europium Complex for Electroluminescent Devices with Sharp Red EmissionJapanese Journal of Applied Physics, 1995
- Bright red light-emitting organic electroluminescent devices having a europium complex as an emitterApplied Physics Letters, 1994
- Intramolecular Energy Transfer in Rare Earth Chelates. Role of the Triplet StateThe Journal of Chemical Physics, 1961