Fig. 7
a Photo of WOLED made doping green Ir(PBPP)3 and red Ir(PIQ)3 phosphorescent emitters in a single host layer composed of blue emitting BlueJ and hole transporting PVK polymers. b Chemical structures of materials used in the emitting layer. a reproduced with permission from ref. [25]. Copyright 2006, WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim