Patent ID: 9082986
Filing Date: 2015-07-14
Classification: H01L

Abstract:
1. An organic electroluminescence device, comprising a first organic thin-film layer and a second organic thin-film layer between an anode and a cathode opposing the anode in this order from the anode side, wherein the first organic thin-film layer comprises an aromatic heterocyclic derivative A represented by formula (1-1), the second organic thin-film layer comprises an aromatic heterocyclic derivative B represented by formula (2-1), and the aromatic heterocyclic derivative A and the aromatic heterocyclic derivative B are different from each other: wherein: each of W each of R each of A each of L one of X R wherein: each of W each of R each of L one of Y R each of A with the proviso that at least one of A wherein: each of Z R