| abstract |
In the light-emitting element, the layer containing the organic compound includes the light-emitting layer, the light-emitting layer contains the three-type iridium complex, and, on the assumption that there is a rectangle, when the iridium complex is viewed two-dimensionally from the direction of the C3 symmetry axis of the iridium complex , at least one of the atoms of the iridium complex is located on each of the four sides of the rectangle, and the rectangle covers the iridium complex, where A represents the maximum length of the long side of the rectangle, and B represents the length of the long side of the rectangle when it is A. When the side length, C represents the width in the C3 symmetry axis direction when the iridium complex is viewed two-dimensionally from the normal line direction of the C3 symmetry axis of the iridium complex, A×B/C 2 is 2.5 or more. |