Functional layer ink, preparation method of photoelectric device functional layer as well as photoelectric device

A technology for optoelectronic devices and functional layers, applied in the field of inkjet printing, can solve the problem that the functional layer ink is difficult to form a functional layer of uniform thickness, and achieve the effect of preventing color mixing

Active Publication Date: 2019-05-14
NANJING TECH CORP LTD
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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 as well as photoelectric device
  • Functional layer ink, preparation method of photoelectric device functional layer as well as photoelectric device
  • Functional layer ink, preparation method of photoelectric device functional layer as well as photoelectric device

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[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 preparation method of a photoelectric device functional layer as well as a photoelectric device. The functional layer ink comprises a functional material, a main body solvent and a spreading regulator; the melting point of the spreading regulator is more than or equal to 15 DEG C; and the solubility of the functional material in the spreading regulator is more than or equal to 0.2 g. The melting point of the spreading regulator is more than or equal to 15 DEG C, the main body solvent in the functional layer ink is volatilized as the process goeson, and the temperature of the system is reduced or the dosage of the main body solvent in the system is not enough to maintain that the spreading regulator continuously exists in the liquid state inthe volatilization process, so the residual spreading regulator is coagulated, the spreading diameter of printing liquid drops is effectively controlled, and the color mixing phenomenon caused by thefact that ink in the adjacent sub-pixels is mixed can be avoided when the photoelectric device adopts a light-emitting device; moreover, the functional material dissolved in the ink is hindered by the coagulated spreading regulator and cannot migrate towards the edge under the gradient difference of a surface tension, so that the generation of a coffee ring is avoided.

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 Applications(China)
IPC IPC(8): C09D11/03C09D11/033H01L51/50H01L51/56
Inventor 顾辛艳
Owner NANJING TECH CORP LTD
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