Method for Producing Matrix-Covered Quantum Dots

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The patent discloses a method for producing quantum dots embedded within a matrix on a substrate. Unlike previous methods, this technique allows for the formation of polymer-free matrices and control over both the quantum dot and matrix composition. Quantum dots are generated from a metallic or metal compound precursor on the substrate, then reacted with a gas-phase reagent that forms the surrounding matrix, all facilitated by temperature control. The process is versatile, allowing for the tailored synthesis of binary, ternary, or multinary compound semiconductors suitable for use in advanced technologies.

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• Production of nanostructured materials for nanooptics (e.g., quantum dot lasers, photodetectors)
• Manufacturing of high-efficiency solar cells using embedded quantum dots for improved light absorption
• Development of next-generation nanoelectronic devices, including transistors, memory, and quantum computing elements
• Fabrication of highly sensitive sensors based on the unique properties of quantum dots and their matrices
• Creation of tailored semiconductor structures for optoelectronic applications such as LEDs and displays

BenefitsContent extracted from patent full text and abstract with AI.

• Enables the formation of polymer-free matrices, allowing greater flexibility in material design and improved electronic/optical properties
• Independent control of quantum dot and matrix composition offers precise tailoring for specific applications
• Not limited by the constraints of epitaxial growth—possible on a wide variety of substrates (e.g., glass, metal-coated wafers, polymer films)
• Supports the synthesis of complex semiconductor compounds (binary, ternary, multinary) for a wide range of functional devices
• Process is simple, scalable, cost-effective, and robust, supporting potential industrial adoption
• Suitable for fabricating highly efficient and customizable semiconductor-based devices, key for advancing solar cell and nanotechnology sectors

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

The depositing of a metallic precursor which is dissolved in a solution containing a polymer onto a substrate by droplet spray distribution is known. A subsequent gas phase reaction with a chalkogen-containing reagent generates quantum dots in a polymer matrix. For generating any polymer-free matrices, the method according to the invention relates to applying the quantum dots (QD) from a precursor (PC) and subsequently bringing into contact the applied quantum dots (QD) and the uncovered substrate (SU) with a gas phase reagent (RG) which contains all of the components of the matrix (MA) which is to be generated, wherein a chemical reaction is brought about between the precursor (PC) and the reagent (RG) by raising the temperature simultaneously with or subsequent to said contact. Thus a composition concording between quantum dots (QD) and matrix (MA) can be generated, wherein the quantum dots (QD) have an additive composition made of the elements of precursor (PC) and reagent (RG), and the matrix (MA) has a composition made exclusively of the elements of the reagent (RG). Binary, ternary, or multinary compound semiconductors can be generated by an appropriate selection of elements and find use in nanooptics and nanoelectronics, and also in solar cells.