| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a device having an anode, a cathode and an emissive layer disposed in between and electrically connected to the anode and the cathode. <P>SOLUTION: The emissive layer includes an emissive material having one or more metal centers. In one embodiment, first and second metal centers are independently selected from the group consisting of d7, d8 and d9 metals. A bridging ligand is coordinated to the first metal center and to the second metal center. In one embodiment, the first and second metal centers each have coordination numbers of at least 3, and more preferably each have coordination numbers of 4. In one embodiment, photoactive ligands are coordinated to the first and second metal centers. In one embodiment, there are no photoactive ligands. In one embodiment, a charge neutral binuclear emissive material is provided. In one embodiment, the first and the second metal centers have a co-facial configuration, and preferably a square planar co-facial configuration. In one embodiment, the metal centers are selected from metals having an atomic number greater than or equal to 40. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
