| 摘要 |
<p>An organic EL element (10) comprising a glass substrate (1), an SiO2 film (2) formed on the glass substrate (1) and used for alkali passivation, an ITO film-carrying substrate (4) consisting of an ITO film (3) formed on the surface of the film (2), a hole transportation layer (5) formed on the surface of the ITO film (3), for efficiently injecting holes into a luminous layer (6), a metal thin film layer (7) for injecting electrons into the luminous layer (6) formed on the surface of the hole transportation layer (5), and the luminous layer (6) for recombining injected holes and electrons to emit light. The surface smoothness of this glass substrate (1) is controlled to satisfy 0 £ Rz £ 4 nm, whereby it is possible to enhance durability in the absence of non-luminous points.</p> |
