NANO METAL OXIDE, PREPARATION METHOD THEREFOR, AND QUANTUM DOT LIGHT-EMITTING DIODE

摘要

Disclosed are a nano metal oxide, a preparation method therefor, and a quantum dot light-emitting diode, wherein the preparation method for the nano metal oxide comprises the steps of providing a composite material, which comprises a PAMAM dendrimer and a metal ion bonded within the cavity of the PAMAM dendrimer; and mixing the composite material and an initial nano metal oxide in a polar solvent, such that the metal ion in the composite material is ionized and then coordinated and bonded with an oxygen vacancy on the surface of the initial nano metal oxide so as to obtain the nano metal oxide. By the method, a nano metal oxide with fewer surface defects can be obtained. The use of the nano metal oxide as an electron transport layer material of a quantum dot light-emitting diode can adjust the electronic mobility of the quantum dot light-emitting diode, such that the electron-hole injection rate thereof achieves a balance, and the luminous efficiency thereof is thus improved.