Organic light emitting device and display apparatus

An organic light emitting device, comprising an anode, a cathode, and an emitting layer disposed between the anode and the cathode;

• wherein a hole transport layer and an electron blocking layer are disposed between the anode and the emitting layer;
• the hole transport layer and the electron blocking layer satisfy:
• |HOMOHTL−HOMOEBL|≤0.2 eV
• wherein HOMOHTL is a highest occupied molecular orbital, HOMO energy level of the hole transport layer and HOMOEBL is a HOMO energy level of the electron blocking layer;
• wherein a material of the hole transport layer comprises a compound having the following structural formula:
• wherein a material of the electron blocking layer comprises one or more compounds having the following structural formulas:
• wherein the emitting layer comprises a host material and a dopant material doped in the host material;
• the electron blocking layer and the dopant material satisfy:
• HOMOdopant>HOMOEBL
• wherein HOMOdopant is a HOMO energy level of the dopant material;
• the dopant material comprises a compound having the following structural formula:
• the host material comprises a compound having the following structural formula: