Quantum dot patternizing method, quantum dot light-emitting device and display device

Abstract

The invention provides a quantum dot patternizing method, a quantum dot light-emitting device and a display device. The patternizing method comprises the following steps that: a precursor solution isinjected into a pixel region on a substrate; a solvent in the precursor solution is removed; and a gas compound is injected into the pixel region, so that the precursor and the gas compound can form aquantum dot light-emitting layer, wherein the quantum dot light-emitting layer comprises ABX3 perovskite quantum dots, wherein A comprises one or more of an organic amine group, formamidine and cesium ions, B comprises lead ions, tin ions, bismuth ions or silver ions, the halogen X comprises one or more of chlorine, bromine and iodine. By controlling the reaction of the precursor and the gas compound, the patterning of quantum dots is realized, the patterning of the quantum dots is easy to realize, the problem that a nozzle of printing equipment is blocked due to the large particle size of perovskite quantum dots is avoided, the thickness of the quantum dot layer is uniform, the light emitting effect of quantum dot pixels is improved, and the display effect of a light emitting device is improved.

Description

technical field [0001] The invention relates to the field of display, in particular to a quantum dot patterning method, a quantum dot light-emitting device and a display device. Background technique [0002] Semiconductor quantum dots are an important fluorescent nanomaterial. In recent years, quantum dot light-emitting diodes (QLEDs) with fluorescent quantum dots as light-emitting layers have gradually become a potential display and light-emitting device. With the increasingly sophisticated nozzles of inkjet printers, inkjet printing technology is gradually applied to the preparation of high-resolution QLED devices. However, the current use of inkjet technology to prepare QLEDs is difficult to inkjet printing, and it is difficult to control the thickness of the quantum dot film layer. It affects the introduction of subsequent functional layer materials, thereby affecting the luminous effect of the pixel, and finally affecting the display effect of the QLED. [0003] Perovs...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a patterning method of quantum dots, a quantum dot light-emitting device and a display device to solve the problem of easily clogging the nozzles of printing equipment due to the large particle size of perovskite quantum dots. Poor stability under different reagents and environmental conditions, it is difficult to realize its patterning through the existing nano-manufacturing technology, which affects the luminous effect of pixels

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