| 摘要 |
The present invention relates to an organic light-emitting diode comprising an emission layer and an electron transport layer stack of at least two electron transport layers, wherein a first electron transport layer and a second electron transport layer comprises at least one matrix compound, wherein - the matrix compound or compounds of the first electron transport layer is/are different to the matrix compound or compounds of the second electron transport layer; and in addition, - the first electron transport layer comprises a dopant of a lithium halide and/or lithium organic complex; and - the second electron transport layer is free of a dopant. |
