Roll-to-roll immersion coating system and preparation method of flexible transparent conductive material

Abstract

The invention belongs to the field of coating functionalization of flexible transparent conductive materials, and particularly relates to a roll-to-roll dipping coating system and a system-based method for preparing the flexible transparent conductive material. The roll-to-roll dipping coating system comprises an unwinding table, a dipping coating tank, a cleaning tank and a rolling table, which are sequentially arranged, wherein a roll-to-roll transmission device is also arranged between the unwinding table and the rolling table and is arranged above the dipping coating tank and the cleaning tank. The method for preparing the flexible transparent conductive material comprises the following steps: firstly, coating a base film on a flexible transparent substrate by magnetron sputtering; secondly, coating a mask by the roll-to-roll dipping coating system; and finally, coating a conductive film by a roll-to-roll magnetron sputtering process, so as to obtain the flexible transparent conductive material. The obtained flexible transparent conductive material has a suede light trapping structure, can be used as a front electrode of a thin-film solar cell; and the flexible transparent conductive material which meets the requirements of a flexible touch panel can be prepared by controlling the thickness of the film and the microsphere suede dimension.

Description

technical field [0001] The invention belongs to the field of coating functionalization of flexible transparent conductive materials, and in particular relates to a roll-to-roll dipping coating system and a preparation method of flexible transparent conductive materials based on the system. Background technique [0002] As a type of solar cells, flexible thin-film solar cells have been developed and researched by various research institutions, enterprises and governments for many years. Compared with flat crystalline silicon and glass-substrate thin-film batteries, the biggest feature of flexible thin-film solar cells is light weight, foldable, unbreakable, high mass-to-power ratio, and very convenient in transportation, carrying, and storage. Flexible thin-film solar cells can not only be fully qualified for all the roles of existing rigid substrate solar cells, but also can be applied and promoted in many other fields where rigid cells are incompetent, including solar cars,...

AI Technical Summary

Problems solved by technology

[0007] 2. The electrode layer cannot realize the preparation of flexible suede;

[0008] 3. The overall efficiency of solar cells made with back reflective electrode structure will be about 2-4% lower. After 30 years of development, Uni-solar's flexible solar cell module efficiency can only reach about 7-8%. , much lower than the solar cells prepared by the front electrode;

[0010] 5. Using the back reflective electrode structure, the preparation of flexible light-transmitting components cannot be realized, which will reduce the diversified development of products to a certain extent

[0011] In addition, with the development of mobile terminals, wearable devices, smart home appliances and other markets, there is a strong demand for flexible touch panels, while the existing mainstream conductive film material Indium Tin Oxide ITO cannot be used for bending applications. New flexible conductive materials are needed to replace the existing mainstream ITO materials to meet the needs of the flexible touch market

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