| 2 | An external quantum efficiency of>20%from solutionprocessed poly(dendrimer)organic light-emitting diodes显示文摘Controlling the orientation of the emissive dipole has led to a renaissance of organic light-emitting diode(OLED)research,with external quantum efficiencies(EQEs)of>30%being reported for phosphorescent emitters.These highly efficient OLEDs are generally manufactured using evaporative methods and are comprised of small-molecule heteroleptic phosphorescent iridium(III)complexes blended with a host and additional layers to balance charge injection and transport.Large area OLEDs for lighting and display applications would benefit from low-cost solution processing,provided that high EQEs could be achieved.Here,we show that poly(dendrimer)s consisting of a non-conjugated polymer backbone with iridium(III)complexes forming the cores of firstgeneration dendrimer side chains can be co-deposited with a host by solution processing to give highly efficient devices.Simple bilayer devices comprising the emissive layer and an electron transport layer gave an EQE of>20%at luminances of up to≈300 cd/m^(2),showing that polymer engineering can enable alignment of the emissive dipole of solution-processed phosphorescent materials. | Fatemeh Maasoumi Ross D.Jansen-van Vuuren Paul E.Shaw Emma V.Puttock Ravi Chandra Raju Nagiri Jake A.McEwan Mark Bown Jenny L.O’Connell Christopher J.Dunn Paul L.Burn Ebinazar B.Namdas | 2018 | npj Flexible Electronics2018，2，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员