Light emitting device and projector

A light emitting device comprising:

• a substrate;
• a laminated structure that is provided on the substrate and that includes a plurality of columnar portions;
• and
• an electrode that is provided at an opposite side of the laminated structure from the substrate,
• wherein the columnar portion includes a first semiconductor layer, a second semiconductor layer of a conductivity type different from that of the first semiconductor layer, and a light emitting layer located between the first semiconductor layer and the second semiconductor layer, and
• the electrode is connected to the second semiconductor layers in the plurality of columnar portions, and includes:
• a first electrode layer formed of a material that has a work function smaller than that of the second semiconductor layer, and
• a second electrode layer that is connected to the first electrode layer and that has a work function smaller than that of the first electrode layer, and
• an interface between the first electrode layer and the second electrode layer has an uneven shape that includes a plurality of peaks and valleys, and the peaks have a height of 10 nm or less.