摘要 |
PROBLEM TO BE SOLVED: To provide a structure for protecting an organic light-emitting material from a damage and the inner dissipation of an electrode that is adhered later, while maintaining improved optical property, electron injection, and adhesion performance. SOLUTION: ITO (indium oxide) or Al bottom part layer 24 is deposited on a Si substrate 22, and then 125Å CuPc 26, 600Å diamine 28, and 650Å Alq 3 and 30 are deposited successively. A thin layer 32, made of Alq that functions as a diffusion barrier, is deposited on the Alq 3 covering 30. Further, a transparent cathode material 34, such as ZnS, GaN, ITO, and ZnSe or the combination of these materials is deposited. |