Method for producing a nanocrystalline CuSCN layer on a substrate

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This patent describes a chemical bath deposition method for producing thin nanocrystalline copper thiocyanate (CuSCN) layers on various substrates. The process involves activating the substrate’s surface, setting the substrate at a higher temperature than the chemical bath solution, and then exposing it to an aqueous solution containing copper(II) and thiocyanate ions. The method allows for controlled deposition of transparent, thin CuSCN layers on different types of substrates, including non-conductive materials.

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• Manufacturing transparent conductive or semiconducting layers in optoelectronic devices, such as solar cells and LEDs
• Creating hole-transport layers in photovoltaic and photoelectronic applications
• Coating flexible electronic substrates (e.g., polyimide films) for flexible electronics or wearable devices
• Surface functionalization or passivation layers in sensors and electronic circuits
• Application in thin-film transistors or other microelectronic components

BenefitsContent extracted from patent full text and abstract with AI.

• Enables deposition on both conductive and non-conductive substrates, including glass, silicon, aluminum, and polymers
• Does not require toxic or expensive organic solvents—uses only aqueous solutions, making it safer and more cost-effective
• Allows for controlled film thickness and crystal morphology by adjusting temperature and chemical concentrations
• No need for initial seed layers, simplifying the process and reducing manufacturing steps
• Can tailor the crystalline phase (α or β modifications) of the CuSCN film for specific electronic or optical properties
• Scalable for industrial applications and suitable for producing homogeneous, transparent, and nanocrystalline coatings

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Patent Abstract

Producing a thin nanocrystalline copper thiocyanate layer on a substrate (A) by chemical bath deposition, comprises activating the surface of the substrate, setting the substrate and the aqueous solutions to different temperatures, where the temperature of the substrate is set higher, which is considered as the temperature of the solution, and using an aqueous solution containing 0.1-200 mM of copper(II)- and thiocyanate-ions.