Organic light-emitting diode, display and illuminating device

An organic light-emitting diode comprising:

• an anode and a cathode which are arranged apart from each other;
• an emissive layer arranged between the anode and the cathode comprising a blue emissive layer located at the anode side and a green and red emissive layer located at the cathode side, the blue emissive layer containing a host material and a blue fluorescent dopant, and the green and red emissive layer containing a host material and a green phosphorescent dopant and/or a red phosphorescent dopant;
• where the excited triplet energy of the blue fluorescent dopant is lower than at least one of the excited triplet energy of the green phosphorescent dopant and the red phosphorescent dopant, the excited triplet energy of the host material included in the blue emissive layer is higher than that of the host material contained in the green and red emissive layer, the energy level of HOMO of the host material contained in the blue emissive layer is shallower than that of HOMO of the host material contained in the green and red emissive layer, the energy level of LUMO of the host material contained in the blue emissive layer is shallower than that of LUMO of the host material contained in the green and red emissive layer, and excitons are generated at the interface between the blue emissive layer and the green and red emissive layer.