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Functional layer ink, preparation method of photoelectric device functional layer and photoelectric device

A functional layer and ink technology, which is applied in the direction of electric solid-state devices, semiconductor/solid-state device manufacturing, electrical components, etc., can solve the problem that the functional layer ink is difficult to form a functional layer with uniform thickness, and achieve the effect of preventing color mixing

Active Publication Date: 2021-11-19
NANJING TECH CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The main purpose of the present invention is to provide a functional layer ink, a method for preparing a photoelectric device functional layer and a photoelectric device, so as to solve the problem that the functional layer ink in the prior art is difficult to form a functional layer with uniform thickness

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  • Functional layer ink, preparation method of photoelectric device functional layer and photoelectric device

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preparation example Construction

[0046] In another typical embodiment of the present application, a method for preparing a functional layer of a photoelectric device is provided, the preparation method comprising: providing a base layer; using a film-forming process to arrange any one of the above-mentioned functional layer inks on the base layer, and During the implementation of the film forming process, at least part of the main solvent in the functional layer ink is volatilized and the spreading regulator is precipitated and solidified to form a functional layer precursor film; and the functional layer precursor film is heated to remove the spreading regulator and the remaining main solvent to form a functional layer. layer.

[0047] The functional layer ink of the present application contains a spreading regulator, and since the melting point of the spreading regulator is greater than or equal to 15°C, in the conventional functional layer preparation process, the main solvent in the functional layer ink wi...

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Abstract

The invention provides a functional layer ink, a method for preparing the functional layer of a photoelectric device and a photoelectric device. The functional layer ink includes functional materials, a main solvent and a spreading regulator. The melting point of the spreading regulator is greater than or equal to 15° C., and the solubility of the functional material in the spreading regulator is greater than or equal to 0.2 g. Since the melting point of the spreading regulator is greater than or equal to 15°C, the main solvent in the functional layer ink volatilizes as the process progresses. During the volatilization process, the temperature of the system decreases or the amount of the main solvent in the system is not enough to maintain the spreading regulator to continue to exist in a liquid state. Coagulate the remaining spread regulator to effectively control the spread diameter of the printing droplets. When the optoelectronic device is a light-emitting device, it can prevent inks in adjacent sub-pixels from mixing to cause color mixing; at the same time, the functional materials dissolved in it are regulated by the solidified spread Because of the resistance of the agent, it cannot migrate to the edge due to the difference in surface tension gradient, thereby avoiding the generation of coffee rings.

Description

technical field [0001] The invention relates to the field of inkjet printing, in particular to a functional layer ink, a method for preparing a photoelectric device functional layer and a photoelectric device. Background technique [0002] QLED (quantum dot light-emitting diodes) has attracted much attention due to its wide color gamut, high color purity, ultra-thin and other characteristics. Compared with OLED (organic light-emitting diodes) Instead of the latter vacuum evaporation technology with high cost, high maintenance cost and low material utilization rate, the solution process of inkjet printing is adopted, which greatly saves costs and can greatly increase the material utilization rate. [0003] Although QLED has many advantages, the characteristics of its material itself also restrict the industrialization of inkjet printing technology. The spreading properties of different batches of inks will be quite different. The reason is that there are subtle differences i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/03C09D11/033H01L51/50H01L51/56
Inventor 顾辛艳
Owner NANJING TECH CORP LTD
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