Nanocrystalline ink with fluorescence characteristics and preparation method and patterning application thereof

Abstract

The invention relates to nanocrystalline ink with fluorescence characteristics and a preparation method thereof and patterning application thereof. The nanocrystalline ink comprises a nanocrystallinematerial, a dispersant, a binder, a thermal curing agent or a light inducer. The nanocrystal material is selected from one or at least two of an ABX3 nanocrystalline, an ABX3@ABX'3 core-shell structure nanocrystalline composite and a nanocomposite with the ABX3 nanocrystalline grown in situ on the surface of a nano two-dimensional material. The nanocrystalline ink has good fluorescence characteristics, and physical and chemical properties such as ink viscosity meet the basic requirements of inkjet printing. Patterned printing can be realized by inkjet printing. Patterned devices with fluorescence characteristics can be obtained by thermal curing or ultraviolet radiation curing. The nanocrystalline ink can be used in the fields of anti-counterfeiting identification, safety monitoring, intelligent display, building photovoltaic integration, biomedical and visible light wireless communication, and realizes high-quality, large-area, fast and efficient, low-cost and complex-structure deviceprocessing and diversified application.

Description

technical field [0001] The invention relates to the technical field of application of nanomaterials, in particular to a nanocrystalline ink with fluorescent properties, a preparation method thereof, and a patterning application. Background technique [0002] Semiconductor nanocrystals have been widely used in solar cells, light-emitting diodes, photodetection, photocatalysis, lasers and other fields due to their unique photoelectric properties; especially CsPbX 3 (X is a halogen element) is a representative of inorganic perovskite nanocrystals, because of its excellent properties such as high light absorption coefficient, low defect density, long carrier diffusion distance and bipolar carrier transport, it is also favored by researchers. Widespread concern. [0003] The inventor has previously developed a series of in-situ growth CsBX on the surface of nanometer two-dimensional materials 3 (B is an element containing +2 valence state; X is a halogen element) nanocrystallin...

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Problems solved by technology

[0004] However, these research and application works have only solved the problems of the synthesis technology of fluorescent nanomaterials and the application in the field of optoelectronics in a small range.

There are still many excellent properties of fluorescent nanomaterials that have not been fully utilized; the current device processing technologies, such as spin coating, electrodeposition, dipping and pulling, etc., have poor processing quality, small area, low efficiency, high cost and poor device structure. Simple problems, so it cannot meet the needs of high-quality, complex-structured device processing and diversified applications

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