Organic electroluminescent device

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

• wherein
• the organic layer comprises a first organic layer and a second organic layer;
• the first organic layer comprises a first organic material and a first p-type dopant;
• the second organic layer comprises a second organic material and a second p-type dopant;
• the first organic layer is in contact with the second organic layer, and the second organic layer is above the first organic layer;
• and
• the first p-type dopant and the second p-type dopant each independently have a structure represented by Formula 1:
• wherein
• n is selected from an integer from 1 to 5;
• the ring A is, at each occurrence identically or differently, selected from a conjugated ring having 4 to 30 ring atoms;
• R3 represents mono-substitution, multiple substitutions, or non-substitution;
• R1, R2, and R3 are, at each occurrence identically or differently, selected from hydrogen, deuterium, or a substituent;
• at least one R3 is selected from hydrogen, deuterium, or a substituent comprising at least two atoms;
• and
• adjacent substituents R1, R2, R3 can be optionally joined to form a ring.