Light-emitting device and preparation method thereof

The embodiment of the invention provides a light-emitting device and a preparation method thereof. The light-emitting device comprises a quantum dot packaging structure and a light-emitting assembly arranged on one side of the quantum dot packaging structure. The quantum dot packaging structure comprises a first light-transmitting plate, a second light-transmitting plate and a quantum dot adhesive film sealed between the first light-transmitting plate and the second light-transmitting plate, wherein the first light-transmitting plate and the second light-transmitting plate are stacked. According to the light-emitting device, external water and/or oxygen can be effectively prevented from permeating into the quantum dot packaging structure, so that the quantum dots have a relatively good light-emitting effect, and the light-emitting device has relatively high light-emitting efficiency. 本申请实施例提供一种发光器件及其制备方法。发光器件包括量子点封装结构和设于量子点封装结构一侧的发光组件；量子点封装结构包括层叠设置的第一透光板和第二透光板以及密封于第一透光板和第二透光板之间的量子点胶膜。该发光器件可以有效的防止外部的水和/或氧气渗入至量