Organic light-emitting diode structure and display device

An organic light-emitting diode structure, wherein the organic light-emitting diode structure comprises an anode, an electron blocking layer, a luminescent layer, a hole blocking layer and a cathode that are arranged in layer configuration, a material forming the luminescent layer comprises a host material and a guest material, and the electron blocking layer, the luminescent layer and the hole blocking layer satisfy the following conditions:

• HOMOhost−HOMOEBL≤0.3 eV,
• LUMOhost>LUMOHBL, and
• HOMOHBL−HOMOhost≥0.1 eV,
• wherein HOMOhost is a highest occupied molecular orbital of the host material, LUMOhost is a lowest unoccupied molecular orbital of the host material, HOMOEBL is a highest occupied molecular orbital of the electron blocking layer, HOMOHBL is a highest occupied molecular orbital of the hole blocking layer, and LUMOHBL is a lowest unoccupied molecular orbital of the hole blocking layer;
• wherein the host material has a structure I, and the guest material has a structure Ill,
• substituents Ar1, Ar2 and Ar3 in the structure I are independently selected from optionally substituted aryl of a ring-carbon-atom quantity of 6-30 or heteroaryl of a ring-atom quantity of 5-20;
• and
• substituents R1, R2, R3, R4 and R5 in the structure Ill are independently selected from hydrogen, or optionally substituted heteroatom, amino, C1-20 alkyl, and aryl or heteroaryl of a ring-carbon-atom quantity of 6-20, wherein a substituent in the aryl or heteroaryl comprises silyl, cyano, halogen or diplogen.