Bright red light‐emitting organic electroluminescent devices based on a novel thiophene‐containing europium complex as an emitting layer
- 1 January 1999
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry
- Vol. 9 (12) , 3023-3026
- https://doi.org/10.1039/a906215g
Abstract
A novel europium complex, Eu(DTP)3(dipphen) (DTP = 1,3-di(2-thienyl)propane-1,3-dione, dipphen = 4,7-diphenyl-1,10-phenanthroline), has been synthesized and applied to organic electroluminescent (EL) devices as an emitting and electron-transporting material. The EL device structure can be described as indium tin oxide (ITO)/hole-transporting layer (triphenyldiamine derivative (TPD))/emitting layer (Eu(DTP)3(dipphen))/electron transport layer (Alq3)/AlLi (99∶1). The emitting layers were formed by a codeposition technique. The deposited EL devices were observed to emit a bright red light originating from Eu(DTP)3(dipphen) with a maximum luminance of 450 cd m–2 at 15 V and 200 mA cm–2.Keywords
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