| 摘要 |
PROBLEM TO BE SOLVED: To provide a light emitting element having high-luminance and long- life light output by including a metal complex compound in at least one layer among organic compound-containing layers clamped between a pair of electrodes consisting of a positive electrode and a negative electrode. SOLUTION: A metal complex compound uses a compound represented by formula I as a ligand. The coordinate metal is selected from Li, Na, K, Be, Mg, Ca, Ru, Zn, Al, Cd, Si, Ge, Sn, Eu, desirably. In the formula, each of R1-R5 represents a hydrogen atom, a halogen atom, an alkyl group, an alkenyl group, an aryl group, an aralkyl group, a nitro group, an amino group, a carbonyl group, an ether group, or a nitryl group, and two of the groups may form a fused ring. For example, a metal complex represented by formula II or the like is available. According to a vacuum deposition method or a solution applying method, an organic layer containing the metal complex compound is formed between a positive electrode and a negative electrode in an organic light emitting element. A thickness of the organic layer is thinly set below 2μm, desirably. An inexpensive element with a large area can be provided. |
