Solution film formation method and device of organic material

A technology of solution film formation and organic materials, which is applied in the manufacture of electrical components, electrical solid devices, semiconductor/solid devices, etc., can solve the problems of less than 10% material usage, uneven coating process, and inability to form patterns, etc. To achieve the effect of accelerating thermal movement, improving film quality and reducing the difference

Inactive Publication Date: 2016-06-15
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The spin coating method is simple and easy, but the main disadvantage is that the usage rate of the material is less than 10%, and the waste is serious, especially the pattern cannot be formed
This is mainly due to two aspects: 1. Inhomogeneity caused by the coating process itself, such as screen printing and inkjet printing, the film formed at the beginning is not uniform and needs to flow to spread; 2. In the solvent Coating unevenness caused by volatile drying

Method used

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  • Solution film formation method and device of organic material
  • Solution film formation method and device of organic material
  • Solution film formation method and device of organic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A solution film-forming device for organic materials, the schematic diagram of which is shown in figure 1 shown. 1-1 in the figure is a variable frequency vibration generator, which can provide high-frequency reciprocating translational motion required by the film forming process. Its power can be adjusted, and the frequency range of high-frequency vibration is controlled between 10Hz and 100MHz. The amplitude is controlled between 1 micron and 1000 microns, and the time is controlled between 1 and 60 minutes.

[0035] 1-2 in the figure is a damping layer, which connects the electric heating plate 1-3 and the frequency conversion vibration generator 1-1, and transmits the motion of the frequency conversion vibrator to the electric heating plate. The use of damping materials can limit the range of motion, reduce risks and improve product yield.

[0036] 1-3 is an electric heating plate among the figure. The lower part is 1-2 damping layer, and there are clamping posit...

Embodiment 2

[0042] A solution film-forming method of an organic material in this embodiment, the specific steps are as follows:

[0043] (1) Pre-film formation: Dissolve the dendrimer sample (bis[4-(9,9-diphenyl)-9,10-dihydroacridine)phenyl]sulfone) in a volume ratio of 40:40 : 15:5 chloroform: toluene: anisole: in the mixed solvent of tetrahydronaphthalene, obtain film-forming solution; Substrate adopts ITO glass substrate, glass substrate is added detergent ultrasonic treatment with isopropanol, acetone, deionized water 10min, then rinse with deionized water; use a 3 micron coating rod to coat the film-forming solution on the substrate to obtain a liquid film;

[0044] (2) Dynamic drying: the substrate with liquid film in step (1) is transferred to the equipment shown in embodiment 1, the frequency conversion vibration generator is turned on, the frequency used is 1000Hz, the power selected is 100W, and the amplitude is controlled At 1-5 microns, the processing time is 30 minutes; whil...

Embodiment 3

[0047] A solution film-forming method of an organic material in this embodiment, the specific steps are as follows:

[0048] (1) Pre-film formation: Dissolve the dendrimer sample bis[4-(9,9-diphenyl)-9,10-dihydroacridine)phenyl]sulfone in a volume ratio of 30:50:13 : 7 chloroform: toluene: anisole: in the mixed solvent of tetrahydronaphthalene, obtain film-forming solution; Substrate adopts ITO glass substrate, glass substrate is added ultrasonic treatment 10min with Virahol, acetone, deionized water, Then rinse it with deionized water; the solution deposition is applied by spraying-film-drawing method, after spraying with a micro-sprayer, and then smearing with a silk screen, the film-forming solution is coated on the substrate to obtain Liquid film;

[0049] (2) Dynamic drying: the substrate with liquid film in step (1) is transferred to the equipment shown in embodiment 1, the frequency conversion vibration generator is turned on, the frequency used is 1000Hz, the power se...

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Abstract

The invention belongs to the technical field of preparation of a film material, and discloses a solution film formation method and device of an organic material. The method comprises the following stages of dissolving the organic material in a mixed solvent containing a high-boiling point solvent and a low-boiling point solvent, and depositing the organic material on a substrate by a film formation technology to obtain a liquid film; and carrying out normal-pressure evaporation on the substrate containing the liquid film under conditions of rotation, variable frequency vibration and programmable temperature rise to remove the low-boiling point solvent, stopping rotating and vibrating, evaporating the high-boiling solvent under conditions of vacuum and programmable temperature rise to obtain an organic material film. The substrate is shaken in a reciprocating way through rotation and variable frequency vibration, so that the solution keeps flowing, the difference between the edge and the middle of the solution is reduced, and the difference of the surface and the interior of the solution is reduced; and meanwhile, the thermal motion of solvent molecules is accelerated by programmable temperature rise, and the film formation quality of the solvent during the drying process is improved.

Description

technical field [0001] The invention belongs to the technical field of membrane material preparation, and in particular relates to a solution membrane-forming method and equipment of organic materials. Background technique [0002] Organic electroluminescence is a new flat panel display technology invented by CWTang in 1987. Compared with other display technologies, it has the advantages of high contrast, light weight, thin thickness, simple process, wide temperature range, and wide range of optional materials. In terms of materials, organic electroluminescence (OLED) can be divided into small molecule electroluminescence and polymer electroluminescence (PLED). Different materials correspond to different preparation processes. The film formation of small molecule luminescent materials generally adopts the vacuum evaporation method, which is a very mature film formation technology at present, but requires high vacuum conditions, so the equipment cost is high, and the materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/00H01L51/56
CPCH10K71/15H10K71/00
Inventor 莫越奇
Owner SOUTH CHINA UNIV OF TECH
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