| 摘要 |
PROBLEM TO BE SOLVED: To provide a long-life electric field light emitting element which has high capability of blocking outside air to retard deterioration. SOLUTION: A transparent electrode 2 of ITO, an organic EL layer 3, and opposed electrodes 4 of MgIn are formed on a transparent substrate 1, and a protective coat 5 of In2O3(ZnO)x (x>=0) having a structure of hexagonal crystal layer is formed so as to cover a light emitting portion. Such construction allows a dense protective coat 5 to prevent the entry of outside air, which allows the opposed electrodes 4 to be prevented from being oxidized or the interface between the opposed electrodes 4 and the organic EL layer 3 to be prevented from peeling. This provides a long-life electroluminescent cell which retards deterioration.
|
