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Three exciplex emitters have been designed by half-and-half mixing three hole-transporting arylamines witha high triplet energy bipolar host.These three exciplex emitters show broad and notably red-shifted emissionsrelative to those of the constituting molecules.Specially,TAPC:DPTPCz shows a high fluorescence quantumyield of 0.68 and small singlet-triplet energy splitting of 47 meV,affording intrinsically efficient fluorescenceradiation and high reverse intersystem crossing(RISC) efficiency.