| 摘要 |
An organic EL device includes an anode, an emitting layer, an electron transporting zone and a cathode in this sequence, in which the electron transporting zone contains an aromatic heterocyclic derivative represented by a formula (1) below. In the formula (1), X 1 to X 3 are a nitrogen atom or CR 1 , and A is represented by a formula (2) below. In the formula (2), L 1 is s single bond or a linking group, and HAr is represented by a formula (3) below. In the formula (3), Y 1 is an oxygen atom, a sulfur atom or the like, and one of X 11 to X 18 is a carbon atom bonded to L 1 by a single bond and the rest of X 11 to X 18 are a nitrogen atom or CR 13 .
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ(HAr) a - L 1 -€ƒ€ƒ€ƒ€ƒ€ƒ(2) |
