Light emitting device comprising alternating subject and object sublayers, display substrate and display device

A light emitting device, comprising a plurality of luminescent layers, wherein:

• each of the plurality of luminescent layers comprises at least one subject sublayer and at least one object sublayer, and the at least one subject sublayer and the at least one object sublayer are disposed alternately;
• thicknesses of at least a part of subject sublayers are greater than or equal to a thickness of the object sublayer;
• and
• wherein at least one of the luminescent layers further comprises a doped sublayer, the doped sublayer is located between the subject sublayer and the object sublayer;
• and in a same luminescent layer, a thickness of the doped sublayer is greater than or equal to at least one of a thickness of the subject sublayer and a thickness of the object sublayer.

A light emitting device, comprising a plurality of luminescent layers, wherein:

• each of the plurality of luminescent layers comprises at least one subject sublayer and at least one object sublayer, and the at least one subject sublayer and the at least one object sublayer are disposed alternately;
• thicknesses of at least a part of subject sublayers are greater than or equal to a thickness of the object sublayer;
• materials of the object sublayers of a part of the luminescent layers comprise fluorescent materials, and materials of the object sublayers of a part of the luminescent layers comprise phosphor materials;
• a transition layer and the subject sublayer are provided between the object sublayer of the phosphor materials and the object sublayer of the fluorescent materials;
• and
• the transition layer is located between the subject sublayer and the object sublayer of the phosphor materials, or the transition layer is located between the subject sublayer and the object sublayer of the fluorescent materials;
• wherein the transition layer comprises a spacer sublayer or a charge transport sublayer.