Dopant for organic optoelectronic device, organic optoelectronic device, and display device

An organic optoelectronic device, comprising:

• an anode and a cathode facing each other, and a light emitting layer disposed between the anode and the cathode, the light emitting layer including:
• a host, and
• a dopant, the dopant being a compound of Group 1 [Grou 1′] wherein:
• the host is selected from the compound having a larger energy bandgap than the dopant,
• the dopant is included in an amount of 0.01 wt % to 40 wt % based on a total amount of the host and the dopant, provided that the dopant is included in a smaller amount than the host,