Light-emitting device and electronic apparatus including the same

A light-emitting device comprising:

• a first electrode;
• a second electrode facing the first electrode;
• and
• an interlayer disposed between the first electrode and the second electrode, wherein
• the interlayer includes an emission layer and at least one of an emission auxiliary layer and a buffer layer,
• the emission layer includes a host and a dopant,
• the dopant includes a first emissive compound and a second emissive compound, and
• the at least one of the emission auxiliary layer and the buffer layer includes a third emissive compound, and
• wherein one or more of (i), (ii), or (iii) are satisfied:
• (i) an onset emission wavelength of the first emissive compound is shorter than an onset emission wavelength of the third emissive compound;
• (ii) the second emissive compound and the third emissive compound are each independently a delayed fluorescence-emitting compound;
• or
• (iii) a maximum emission wavelength of the host is shorter than a maximum emission wavelength of the first emissive compound, and the maximum emission wavelength of the host is shorter than a maximum emission wavelength of the second emissive compound or a maximum emission wavelength of the third emissive compound.