Organic light-emitting device and display panel

An organic light-emitting device, comprising:

• an anode;
• a cathode;
• and
• a plurality of layers stacked with each other between the anode and the cathode;
• wherein:
• the plurality of layers comprises a first hole transport layer, a first light-emitting layer, a first electron transport layer, an n-type charge generation layer, and a p-type charge generation layer stacked in sequence;
• the n-type charge generation layer comprises a matrix, a first dopant, and a second dopant;
• and
• the matrix comprises a first electron transport organic material, the first dopant comprises a first metal quinoline complex, and the second dopant is selected from the group consisting of a rare earth metal, an alkali metal, an alkaline-earth metal, and any combination thereof;
• or the matrix comprises a first electron transport organic material, the first dopant comprises a first metal quinoline complex, and the second dopant comprises an n-type organic material;
• wherein the first electron transport layer comprises a second electron transport organic material and a second metal quinoline complex doped in the second electron transport organic material;
• wherein the first metal quinoline complex and the second metal quinoline complex are distributed non-uniformly in the n-type charge generation layer and the first electron transport layer, respectively.