Mutlugun, EvrenGuzelturk, BurakAbiyasa, Agus PutuGao, YuanSun, Xiao WeiDemir, Hilmi Volkan2020-02-142020-02-1420141948-7185DOI: 10.1021/jz5012669https://hdl.handle.net/20.500.12573/167The authors would like to acknowledge the financial support from the Singapore National Research Foundation under the programs of NRF-RF-2009-09 and NRF-CRP-6-2010-02, the Science and Engineering Research Council, Agency for Science, Technology and Research (A*STAR) of Singapore (Project Nos. 61006037 and 61076015), EU-FP7 Nanophotonics4-Energy NoE, TUBITAK EEEAG 109E002, 109E004, 110E010, 110E217, ESF-EURYI, and TUBA-GEBIP. E.M. acknowledges BAGEP awardNonradiative energy transfer (NRET) is an alternative excitation mechanism in colloidal quantum dot (QD) based electroluminescent devices (QLEDs). Here, we develop hybrid highly spectrally pure QLEDs that facilitate energy transfer pumping via NRET from a phosphorescent small organic molecule-codoped charge transport layer to the adjacent QDs. A partially codoped exciton funnelling electron transport layer is proposed and optimized for enhanced QLED performance while exhibiting very high color purity of 99%. These energy transfer pumped hybrid QLEDs demonstrate a 6-fold enhancement factor in the external quantum efficiency over the conventional QLED structure, in which energy transfer pumping is intrinsically weak.enginfo:eu-repo/semantics/openAccessENERGY-TRANSFERNANOCRYSTALSCOMPLEXarticle10.1021/jz5012669