Enhanced efficiency of polymer light emitting diodes utilizing oxadiazole polymers (pages 839–842)
Dr. Siegfried Karg, Dr. Walter Rieß, Prof. Markus Schwoerer, Elke Buchwald, Martin Meier, Peter Pösch, Walter Rieß, Prof. Hans-Werner Schmidt, Dr. Peter Strohriegl and Markus Schwoerer
Article first published online: 15 SEP 2004 | DOI: 10.1002/adma.19950071004
New oxadiazole polymers for use in LEDs are reported that have high thermal stability and excellent film-forming properties. The characteristics of the polymers themselves and of heterolayer LEDs based on poly(phenylenevinylene) that incorporate the polymers as efficient elecron transport and injection layers are discussed. The stability, operating time and quantum efficiency are shown to be improved compared to monolayer devices.