Nanoparticles, methods of patterning nanoparticle layers, and related applications

Abstract

The invention discloses a nano particle, a nano particle layer patterning method and related application, when the nano particle is adopted to form a patterned nano particle layer on a substrate, a photosensitive material is added into the nano particle, then under the irradiation of light with a preset wavelength, a protecting group in a first ligand is dissociated to form an amino group, and then the patterned nano particle layer is formed. Forming a second ligand comprising an amino group on the surface of the nanoparticle, and if the polarity of the second ligand is different from that of the first ligand, the dissolvability of the second ligand and that of the first ligand in the same developing solution are different; and the amino group of the second ligand is matched with the adjacent nano particles, so that the nano particles form a tightly connected cross-linked network structure. In the developing process, the cross-linked nano particles are not dissolved in the developing solution and are retained, and the non-cross-linked nano particles are dissolved in the developing solution, so that the nano particles are separated from the substrate and are removed, the patterning of the nano particle layer is completed, and a nano particle pattern with high resolution and good performance can be formed.

Description

technical field [0001] The present invention relates to the field of display technology, and in particular, to a nanoparticle, a method for patterning a nanoparticle layer, and related applications. Background technique [0002] Quantum Dots (QDs), also known as nanocrystals, are nanoparticles composed of II-VI or III-V elements. The particle size of quantum dots is generally between 1 and 20 nm. Due to the quantum confinement of electrons and holes, the continuous energy band structure becomes a discrete energy level structure, which can emit fluorescence after excitation. [0003] With the in-depth development of quantum dot preparation technology, the stability and luminous efficiency of quantum dots continue to improve, and the research on quantum dot light-emitting diodes (Quantum Light Emitting Diode, QLED) continues to deepen, and the application prospect of QLED in the display field is getting brighter day by day. However, the generation efficiency of QLEDs has not ...

AI Technical Summary

Problems solved by technology

However, the production efficiency of QLED has not yet reached the level of mass production. The most important reason is that the high-resolution patterning technology of QLED has not yet achieved a breakthrough.

[0004] When producing patterned nanoparticles similar to quantum dots in the prior art, due to the inorganic nanoparticle characteristics of nanoparticles, patterned nanoparticles cannot be produced by evaporation and patterning.

[0005] The existing technology generally produces patterned nanoparticles by inkjet printing, but it is difficult to achieve high resolution with this method

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