Fig. 8
a Photo of WOLED based on a single PVK/OXD-7 host layer doped with blue FIrpic and yellow Ir(DPA-Flpy)3 iridium phosphors. b Chemical structures of materials used in the emitting layer. a reproduced with permission from ref. [26]. Copyright 2009, WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim