| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a hole transport material which transports electric charge to a release layer more quickly, is durable, and enables a highly efficient apparatus.SOLUTION: The organic light-emitting device may be made using either a compound of the specified formula (A), a cyclic phosphine as an ingredient thereof, or a combination of the two. (In the formula, R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 are each independently an alkyl group or an optionally substituted phenyl group or the like; and optionally, two or more R groups selected from R2, R3, R4, R5, R6, R7, R8, R9 and R10 may form one or a plurality of ring structures.)</p> |
