Improving Colour Purity and Device Efficiency in Molecular Lanthanide TFEL Devices
- 1 May 1999
- journal article
- Published by Wiley in SID Symposium Digest of Technical Papers
- Vol. 30 (1) , 560-563
- https://doi.org/10.1889/1.1834083
Abstract
Organic EL devices with excellent red CIE colour coordinates, based upon the new lanthanide EL material Eu[Ph2P(O)NP(O)Ph2]3(Eupip3) are described. Several device structures are reported and the effects of charge transport layers on device structure critically assessed. Improved device performance from an unencapsulated device using an aluminum cathode is achieved in a three layer structure with TPD and TAZ as the charge transport layers. This device has an efficiency of 0.02 % at 20 cd/m2 at 25 V and 1 mA/cm2.Keywords
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