NANOPARTICLES, INK AND PROCESS FOR MAKING AND USING

• Main Authors: MISKIEWICZ, PAWEL, BROOKES, PAUL CRAIG, DESHMUKH, RANJAN DEEPAK, HOOKER, REGEKAH
• Format: Patent
• Language: English; French
• Published: 04.12.2014
• Subjects: ADHESIVES; BASIC ELECTRIC ELEMENTS; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; COMPOUNDS THEREOF; CORRECTING FLUIDS; DYES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FILLING PASTES; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OFSOLID INORGANIC COMPOUNDS; INKS; INORGANIC CHEMISTRY; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-METALLIC ELEMENTS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SEMICONDUCTOR DEVICES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; USE OF MATERIALS THEREFOR; WOODSTAINS

This invention relates to ternary, quaternary or multinary chalcogenide semiconductor nanoparticles (NPs) stabilized by inorganic ions including tetrahalogenoborate, hexahalogenophosphate or hexahalogenoantimonate. The invention further relates to stable nanoparticle inks formulated with these modified nanoparticles, and semiconductor layers and devices generated using these inks. The nanoparticles are preferably semiconducting nanocrystals of the ternary, quaternary or multinary metal chalcogenide type. The specifically stabilized nanoparticles can be produced by a ligand exchange starting from conventional nanoparticles. La présente invention concerne des nanoparticules (NP) semi-conductrices de chalcogénure ternaire, quaternaire ou multinaire, stabilisées par des ions inorganiques, notamment du tétrahalogénoborate, de l'hexahalogénophosphate ou de l'hexahalogénoantimonate. La présente invention concerne aussi des encres à nanoparticules stables formulées avec ces nanoparticules modifiées, ainsi que des couches semi-conductrices et des dispositifs générés en utilisant ces encres. Les nanoparticules sont de préférence des nanocristaux semi-conducteurs de type chalcogénure métallique ternaire, quaternaire ou multinaire. Les nanoparticules particulièrement stabilisées peuvent être produites par un échange de ligands à partir de nanoparticules conventionnelles.