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Fluorescent emitters have regained intensive attention in the community of organic light-emitting diodes(OLEDs)since a breakthrough in the fluorescence OLEDs by utilizing thermally activated delayed fluorescence(TADF)emitters to boost the device efficiency significantly.TADF small molecular emitters have evolved very rapidly with 100%internal quantum efficiency and over 20%external quantum efficiency(EQE)achieved in the OLEDs [1],however further utilization of these emitters in the solution process remains to be explored.