Strongly Directed Emission from Controlled-Spontaneous-Emission Electroluminescent Diodes with Europium Complex as an Emitter
- 1 June 1994
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 33 (6B), L863-866
- https://doi.org/10.1143/jjap.33.l863
Abstract
Multilayer electroluminescent diodes with sharp red emission were fabricated using a new europium complex as an emitter. Microcavity structures were introduced into the EL diodes with sharp red emission. The device structure consisted of a dielectric reflector composed of SiO2/TiO2 bilayers, an indium-tin-oxide electrode, a hole transport layer, a europium complex as an emission layer, an electron transport layer and a MgAg electrode. The dielectric reflector and the MgAg metal electrode constituted a planer microcavity, and sharply directed emission from the europium complex was observed when operated under dc drive voltage. The relationship between emission angle and the size of the microcavity was discussed.Keywords
This publication has 5 references indexed in Scilit:
- Control of emission characteristics in organic thin-film electroluminescent diodes using an optical-microcavity structureApplied Physics Letters, 1993
- Organic photo- and electroluminescent devices with double mirrorsApplied Physics Letters, 1993
- Enhanced spectral power density and reduced linewidth at 1.3 μm in an InGaAsP quantum well resonant-cavity light-emitting diodeApplied Physics Letters, 1992
- Physics and Device Applications of Optical MicrocavitiesScience, 1992
- Electroluminescence in Organic Films with Three-Layer StructureJapanese Journal of Applied Physics, 1988