Light-emitting complex, hardened material comprising same, optical sheet, backlight unit, and display device

A light-emitting complex according to the present invention comprises: at least one quantum dot; and an ionomer for covering the quantum dot. The light-emitting complex has excellent quantum efficiency, a low width of change in a light-emitting peak even when the light-emitting complex is dispersed to a resin, excellent dispersion stability, excellent ultra-violate stability, and excellent heat/moisture stability.