| 摘要 |
<p>An organic electroluminescence device comprising an anode, an organic hole transport layer, an organic emission layer and a cathode layered in this order on a substrate, or, optionally, comprising an additional electron transport layer between the organic emission layer and the cathode, wherein the organic emission layer comprises a benzoxazinone derivative represented by formula (1), wherein R1 is a specific acyl group or sulfonyl group, and R?2 and R3¿ are specific substituents.</p> |
