| abstract |
A cyclometalated transition metal complex that emits highly efficient phosphorescence and an organic EL device using the same. A cyclometalated transition metal complex is an Ir metal complex having an aromatic isocyanide group, for example, synthesized by the following formula. An organic EL element having the complex as a light emitting layer emits light in a wavelength region of 400 to 650 nm. [Selection] Figure 2 |