The present invention is generally directed to electroluminescent Ir(III) compounds with phosphinoalkoxides and phenylpyridines or phenylpyrimidines, and devices that are made with the Ir(III) compounds. ...http://www.google.de/patents/US20030173896?utm_source=gb-gplus-sharePatent US20030173896 - Electroluminescent iridium compounds with phosphinoalkoxides and phenylpyridines or phenylpyrimidines and devices made with such compounds
