LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, LIGHTING DEVICE, AND ELECTRONIC APPLIANCE

摘要

The light-emitting layer contains a light-emitting base including a chalcogenide compound, and a light-emitting center including two kinds of halogen compounds. The chalcogenide compound contains a chalcogen element and an element selected from elements belonging to Group 2 to Group 13 of the periodic table, and the halogen compound contains a halogen element and an element selected from typical metal elements, transition metal elements, or rare earth elements.