Light emitting device and projector

A light emitting device comprising:

• a substrate;
• and
• a laminated structure provided to the substrate, and including a plurality of columnar parts, wherein
• the columnar part includes
• a first semiconductor layer,
• a second semiconductor layer different in conductivity type from the first semiconductor layer, and
• a light emitting layer disposed between the first semiconductor layer and the second semiconductor layer,
• the first semiconductor layer is disposed between the substrate and the light emitting layer,
• between an end at the substrate side of the light emitting layer in a laminating direction of the first semiconductor layer and the light emitting layer, and an end at an opposite side to the substrate of the light emitting layer in the laminating direction, a largest diametrical size of the columnar part is defined as a first diametrical size,
• the columnar part has a diametrical size no larger than the first diametrical size in an entire area between the end at the substrate side of the light emitting layer and an end at the substrate side of the first semiconductor layer in the laminating direction,
• the columnar part has a diametrical size smaller than the first diametrical size in at least a part of the area between the end at the substrate side of the light emitting layer in the laminating direction and the end at the substrate side of the first semiconductor layer,
• the columnar part has a diametrical size no larger than the first diametrical size in an entire area between the end at the opposite side to the substrate of the light emitting layer, and an end at an opposite side to the substrate of the second semiconductor layer in the laminating direction,
• the columnar part has a diametrical size smaller than the first diametrical size in at least a part of the area between the end at the opposite side to the substrate of the light emitting layer
• in the laminating direction, and the end at the opposite side to the substrate of the second semiconductor layer, and
• in the columnar parts adjacent to each other, one of the columnar parts and another of the columnar parts have direct contact with each other, wherein
• the first semiconductor layer has a first center in the laminating direction,
• the second semiconductor layer has a second center in the laminating direction,
• the light emitting layer has a third center in the laminating direction,
• in the columnar parts adjacent to each other, the one of the columnar parts and the other of the columnar parts have contact with each other at a position at the third center in the laminating direction, and
• there is a crystal defect in an interface between the one of the columnar parts and the other of the columnar parts at the position of the third center in the laminating direction.

A light emitting device comprising:

• a substrate;
• and
• a laminated structure provided to the substrate, and including a plurality of columnar parts, wherein
• the columnar part includes
• a first semiconductor layer,
• a second semiconductor layer different in conductivity type from the first semiconductor layer, and
• a light emitting layer disposed between the first semiconductor layer and the second semiconductor layer,
• the first semiconductor layer is disposed between the substrate and the light emitting layer,
• between an end at the substrate side of the light emitting layer in a laminating direction of the first semiconductor layer and the light emitting layer, and an end at an opposite side to the substrate of the light emitting layer in the laminating direction, a largest diametrical size of the columnar part is defined as a first diametrical size,
• the columnar part has a diametrical size no larger than the first diametrical size in an entire area between the end at the substrate side of the light emitting layer and an end at the substrate side of the first semiconductor layer in the laminating direction,
• the columnar part has a diametrical size smaller than the first diametrical size in at least a part of the area between the end at the substrate side of the light emitting layer in the laminating direction and the end at the substrate side of the first semiconductor layer,
• the columnar part has a diametrical size no larger than the first diametrical size in an entire area between the end at the opposite side to the substrate of the light emitting layer, and an end at an opposite side to the substrate of the second semiconductor layer in the laminating direction,
• the columnar part has a diametrical size smaller than the first diametrical size in at least a part of the area between the end at the opposite side to the substrate of the light emitting layer in the laminating direction, and the end at the opposite side to the substrate of the second semiconductor layer, and
• in the columnar parts adjacent to each other, one of the columnar parts and another of the columnar parts have direct contact with each other, wherein
• the first semiconductor layer has a first center in the laminating direction,
• the second semiconductor layer has a second center in the laminating direction,
• the light emitting layer has a third center in the laminating direction,
• in the columnar parts adjacent to each other, the one of the columnar parts and the other of the columnar parts have contact with each other at a position at the third center in the laminating direction,
• in a plan view from the laminating direction, the second semiconductor layer is disposed around the light emitting layer, and
• the second semiconductor layer of the one of the columnar parts and the second semiconductor layer of the other of the columnar parts have contact with each other at the position of the third center in the laminating direction.