Light-emitting element, display device including the same, and method of fabricating light-emitting element

A display device comprising:

• pixels, each of the pixels comprising a first electrode, a second electrode, and a light-emitting element electrically connected between the first electrode and the second electrode, wherein
• the light-emitting elements comprises:
• a first semiconductor layer doped to a first conductivity type;
• an active layer disposed on the first semiconductor layer;
• a second semiconductor layer disposed on the active layer and doped to a second conductivity type;
• and
• a passivation layer surrounding surfaces of the active layer, the passivation layer comprising a side surface of the active layer,
• the passivation layer comprises a semiconductor material that matches a lattice of a semiconductor material contained in the active layer, and
• the semiconductor material has a band gap energy higher than that of the semiconductor material contained in the active layer.

A method of fabricating a light-emitting element, the method comprising:

• sequentially forming a first semiconductor layer, a first passivation layer, an etch stop layer, a second passivation layer, and an insulating layer on a substrate;
• etching a part of the insulating layer to expose a part of the second passivation layer;
• exposing a part of the etch stop layer by etching the exposed part of the second passivation layer;
• exposing a part of the first passivation layer by etching the exposed part of the etch stop layer;
• and
• sequentially forming a third passivation layer, an active layer, a fourth passivation layer, and a second semiconductor layer on the exposed part of the first passivation layer.