Hydrotalcite coated quantum dot microsphere and preparation method thereof

Abstract

The invention provides a hydrotalcite coated quantum dot microsphere which comprises a quantum dot microsphere and a hydrotalcite coating layer arranged on the surface of the quantum dot microsphere, wherein the quantum dot microsphere is formed by compounding a quantum dot and a primary matrix material. The invention further provides a preparation method of the hydrotalcite coated quantum dot microsphere, which comprises the steps of coating the surface of the quantum dot microsphere with a hydrotalcite material to form the quantum dot microsphere with good luminous efficiency and stability. The inorganic material hydrotalcite is used as a barrier material; due to excellent water resistance and oxygen resistance of the hydrotalcite, the quantum dot microsphere is effectively protected; oxygen and water vapor are isolated to a certain extent; at the same time, an alkaline property of the hydrotalcite is further utilized to improve the stability of the quantum dot microsphere in a dielectric material.

Description

Technical field [0001] The invention relates to the technical field of semiconductor nanomaterial preparation, in particular to a hydrotalcite-coated quantum dot microsphere and a preparation method thereof. Background technique [0002] Quantum dots, also known as semiconductor nanomaterials, are a new type of inorganic luminescent nanocrystalline materials. Because of their obvious quantum size effect and unique optical properties, they have potential applications in the fields of lighting, display, solar energy, and biomarkers. [0003] Compared with traditional organic fluorescent dyes, quantum dots have a high yield and are not easily photodegraded. Their special discrete energy level structure makes their half-value width narrower and can emit monochromatic light with higher purity. In this context, at present, quantum dots have gradually been developed into a new type of light conversion material. For example, in the field of liquid crystal display, display manufacturers ha...

AI Technical Summary

Problems solved by technology

[0004] However, quantum dots are sensitive to water and oxygen

Quantum dots are prone to oxidation and damage when exposed to air and moisture, resulting in loss of luminescent properties

In fact, the use environment of quantum dots is often high temperature, high-intensity light, ambient gas and moisture. These adverse effects further lead to the decline and loss of quantum dot efficiency, which limits the scope of use of luminescent quantum dots.

Images