| 摘要 |
A first organic EL device in accordance with the present invention comprises a pair of electrodes opposing each other and a luminescent layer, disposed between the electrodes, containing a polymer having an anthracene structure; and a hole-transferring compound having a glass transition temperature of at least 70° C. A second organic EL device in accordance with the present invention comprises a hole injection electrode and an electron injection electrode which oppose each other; a luminescent layer, disposed between the hole injection electrode and electron injection electrode, containing a polymer having an anthracene structure and having a modified part, disposed near the surface on the side closer to the electron injection electrode, containing a hole-blocking compound having a bandgap of at least 4.0 eV; and an electron-blocking layer, disposed between the hole injection electrode and the luminescent layer, containing a hole-transferring compound having an electron affinity of 3.0 eV or less. The first and second organic EL devices can keep device characteristics such as luminance and luminous efficiency at a high level for a long period.
|
