Method for measuring coverage rate of quantum dot surface ligand

A technology of surface ligand and measurement method, applied in the field of quantum dots, can solve the problems of affecting the light-emitting layer film, poor solubility, low pixel resolution, etc., and achieve the effect of improving pixel resolution, ensuring stability, and ensuring solubility.
CN109932476AActive Publication Date: 2019-06-25TCL CORPORATION
2 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TCL CORPORATION
Publication Date
2019-06-25
Patent Text Reader

Abstract

The invention provides a method for measuring the coverage rate of a quantum dot surface ligand. The coverage rate Ki of the organic ligand containing sulfydryl or nitrogen on the quantum dot surfaceis determined by potentiometric titration. The method can be used for quality evaluation of the quantum dot. If the Ki is less than 2*10<-10> mol / cm<2>, the quality of the quantum dot is poor; and solution or ink configuration can not be carried out until the Ki value is improved. With the provided method, the result is accurate; and the operation is simple. Furthermore, with the method, the highstability of the quantum dot surface ligand content is ensured; the solubility of different batches of quantum dots is guaranteed; a coffee ring effect caused by different drying rates in quantum dotsolution preparation for a film is avoided; add the pixel resolution and uniformity of the brightening voltage and the photoelectric efficiency of the quantum dot display panel can be improved.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of quantum dots, in particular to a method for measuring ligand coverage on the surface of quantum dots. Background technique

[0002] Quantum dots refer to semiconductor nanocrystals whose geometric size is smaller than their excitonic Bohr radius. Quantum dots have great potential applications in the fields of biomedicine, environmental energy, and lighting display due to their excellent optical properties such as absorption bandwidth, narrow fluorescence emission band, high quantum efficiency, and good photostability. The display technology based on quantum dot luminescence has been highly valued by the display industry in recent years. Compared with liquid crystal display and organic light-emitting display, quantum dot luminescence has a wider color gamut, higher color purity, simpler structure, and higher stability. It is considered It is a new generation display technology.

[0003] The preparation t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More