LIGHT-EMITTING DIODE COMPRISING PEROVSKITE LIGHT-EMITTING LAYER HAVING LAYERED STRUCTURE, AND METHOD OF PRODUCING SAME

摘要

The present invention relates to a light-emitting diode comprising a light-emitting layer, wherein the light-emitting layer has a layered structure with two or more layers of a first light-emitting material layer and a second light-emitting material layer alternatingly disposed, wherein each of the light-emitting material layers is a perovskite layer or an organic material layer, and the first light-emitting material layer and the second light-emitting material layer have different band gaps relative to each other. As the light-emitting layer has a layered structure in which the first light-emitting material layer and the second light-emitting material layer are alternatingly disposed, electroluminescence efficiency can be improved by adjusting the electron-hole recombination region through controlling energy levels. In addition, a white light-emitting diode can be produced by controlling energy levels of the first light-emitting material layer and the second light-emitting material layer.