| 摘要 |
This organic electroluminescent element is provided with an anode, a light-emitting layer, an electron transport band and a cathode, in that order. The electron transport band includes an aromatic heterocyclic derivative represented by general formula (1). In general formula (1), X1 to X3 are each a nitrogen atom or CR1, while A is represented by general formula (2). In general formula (2), L1 is a single bond or a linking bond, while HAr is represented by general formula (3). In general formula (3), Y1 is an oxygen atom or a sulfur atom, etc., and one of X11 to X18 is a carbon atom linked by a single bond to L1, while the others are a nitrogen atom or CR13. |
