Patents Assigned to Nanoco Technologies Ltd.
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Patent number: 8847197Abstract: In various embodiment, a primary particle includes a primary matrix material containing a population of semiconductor nanoparticles, with each primary particle further comprising an additive to enhance the physical, chemical and/or photo-stability of the semiconductor nanoparticles. A method of preparing such particles is described. Composite materials and light-emitting devices incorporating such primary particles are also described.Type: GrantFiled: September 23, 2010Date of Patent: September 30, 2014Assignee: Nanoco Technologies Ltd.Inventors: Nigel Pickett, Imad Naasani, James Harris
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Publication number: 20140283913Abstract: Photovoltaic (PV) devices and solution-based methods of making the same are described. The PV devices include a CIGS-type absorber layer formed on a molybdenum substrate. The molybdenum substrate includes a layer of low-density molybdenum proximate to the absorber layer. The presence of low-density molybdenum proximate to the absorber layer has been found to promote the growth of large grains of CIGS-type semiconductor material in the absorber layer.Type: ApplicationFiled: November 8, 2013Publication date: September 25, 2014Applicant: Nanoco Technologies Ltd.Inventors: Stephen Whitelegg, Takashi Iwahashi, Paul Kirkham, Cary Allen, Zugang Liu, Stuart Stubbs, Jun Lin
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Publication number: 20140277297Abstract: Disclosed herein are articles for use in phototherapy utilizing quantum dots (QDs). One embodiment is a medical dressing having an occlusive layer and translucent layer. Quantum dot light-emitting diode chips are configured within the occlusive layer to provide light of a specific wavelength for use in phototherapy. Another embodiment is a medical dressing having an occlusive layer and translucent layer, wherein quantum dot material is embedded or impregnated within one or both layers.Type: ApplicationFiled: March 14, 2014Publication date: September 18, 2014Applicant: Nanoco Technologies, Ltd.Inventors: James Harris, Paul Glarvey, Ombretta Masala, Nigel Pickett, Nathalie Gresty
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Publication number: 20140268639Abstract: A lamp for safety signalling is disclosed. The lamp uses quantum dot phosphors to down-convert light from a primary light source and provide red or green light.Type: ApplicationFiled: March 14, 2014Publication date: September 18, 2014Applicant: Nanoco Technologies, Ltd.Inventor: Dale Needham
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Publication number: 20140264172Abstract: A scalable method for the manufacture of narrow, bright, monodisperse, photo-luminescent quantum dots prepared in the presence of a Group II-VI molecular seeding cluster fabricated in situ from a zinc salt and a thiol or selenol compound. Exemplary quantum dots have a core containing indium, phosphorus, zinc and either sulfur or selenium.Type: ApplicationFiled: March 13, 2014Publication date: September 18, 2014Applicant: Nanoco Technologies, Ltd.Inventors: Steven Daniels, James Harris, Paul Glarvey, Katherine Orchard, Arun Narayanaswamy
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Publication number: 20140271486Abstract: Methods for detecting disease in a patient are disclosed. The methods involve administering to the patient a quantum dot-analyte conjugate, which includes an analyte that binds to a marker for the disease in the patient's gastrointestinal tract. The analyte is conjugated to a quantum dot having a characteristic emission wavelength. Using an endoscopic modality, a physician can illuminate portions of the patient's gastrointestinal tract and detect the presence of the marker based on emission of the quantum dot. Also disclosed are methods of predicting a response to a treatment in a patient.Type: ApplicationFiled: March 14, 2014Publication date: September 18, 2014Applicant: Nanoco Technologies, Ltd.Inventor: Nathalie Gresty
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Publication number: 20140273337Abstract: Materials and methods for preparing Cu2ZnSnS4 (CZTS) layers for use in thin film photovoltaic (PV) cells are disclosed herein. The CZTS materials are nanoparticles prepared by a colloidal synthesis in the presence of a labile organothiol. The organothiol serves as both a sulphur source and as a capping ligand for the nanoparticles.Type: ApplicationFiled: March 14, 2014Publication date: September 18, 2014Applicant: Nanoco Technologies, Ltd.Inventors: Nathalie Gresty, Ombretta Masala, James Harris, Nigel Pickett
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Publication number: 20140264196Abstract: Disclosed herein are coated beads made of a primary matrix material and containing a population of quantum dot nanoparticles. Each bead has a multi-layer surface coating. The layers can be two or more distinct surface coating materials. The surface coating materials may be inorganic materials and/or polymeric materials. A method of preparing such particles is also described. The coated beads are useful for composite materials for applications such as light-emitting devices.Type: ApplicationFiled: March 13, 2014Publication date: September 18, 2014Applicant: Nanoco Technologies, Ltd.Inventors: Matthew Werner, Nathalie Gresty, Nigel Pickett, Paul Chalker, James Harris, Imad Naasani
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Publication number: 20140264192Abstract: Materials and methods for preparing Cu2XSnY4 nanoparticles, wherein X is Zn, Cd, Hg, Ni, Co, Mn or Fe and Y is S or Se, (CXTY) are disclosed herein. The nanoparticles can be used to make layers for use in thin film photovoltaic (PV) cells. The CXTY materials are prepared by a colloidal synthesis in the presence of labile organo-chalcogens. The organo-chalcogens serves as both a chalcogen source for the nanoparticles and as a capping ligand for the nanoparticles.Type: ApplicationFiled: March 13, 2014Publication date: September 18, 2014Applicant: Nanoco Technologies, Ltd.Inventors: Nathalie Gresty, James Harris, Ombretta Masala, Nigel Pickett, Laura Wylde
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Publication number: 20140261651Abstract: Disclosed herein are CIGS-based photon-absorbing layers disposed on a substrate. The photon-absorbing layers are useful in photovoltaic devices. The photon absorbing-layer is made of a semiconductor material having empirical formula AB1-xB?xC2-yC?y, where A is Cu, Zn, Ag or Cd; B and B? are independently Al, In or Ga; C and C? are independently S, or Se, and wherein 0?x?1; and 0?y?2. The grain size of the semiconductor material and the composition of the semiconductor material both vary as a function of depth across the layer. The layers described herein exhibit improved photovoltaic properties, including increased shunt resistance and decreased backside charge carrier recombination.Type: ApplicationFiled: March 14, 2014Publication date: September 18, 2014Applicant: Nanoco Technologies, Ltd.Inventor: Stephen Whitelegg
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Publication number: 20140252273Abstract: A method for producing aqueous compatible semiconductor nanoparticles includes binding pre-modified ligands to nanoparticles without the need for further post-binding modification to render the nanoparticles aqueous compatible. Nanoparticles modified in this way may exhibit enhanced fluorescence and stability compared to aqueous compatible nanoparticles produced by methods requiring post-binding modification processes.Type: ApplicationFiled: May 21, 2014Publication date: September 11, 2014Applicant: Nanoco Technologies Ltd.Inventors: Nigel Pickett, Mark Christopher McCairn
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Publication number: 20140249324Abstract: Nanoparticles containing IUPAC group 11 ions, group 13 ions and sulfur ions are synthesized by adding metal salts and an alkanethiol in an organic solvent and promoting the reaction by applying heat. Nanoparticles are formed at temperatures as low as 200° C. The nanoparticles may be thermally annealed for a certain amount of time at a temperature lower than the reaction temperature (usually ˜40° C. lower) to improve the topology and narrow the size distribution. After the reaction is complete, the nanoparticles may be isolated by the addition of a non-solvent and re-dispersed in organic solvents including toluene, chloroform and hexane to form a nanoparticle ink. Additives may be incorporated in the reaction solution to tailor the final ink viscosity.Type: ApplicationFiled: March 3, 2014Publication date: September 4, 2014Applicant: Nanoco Technologies, Ltd.Inventors: James Harris, Christopher Newman, Ombretta Masala, Laura Wylde, Nigel Pickett
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Patent number: 8784701Abstract: A process for producing nanoparticles incorporating ions selected from groups 13, 16, and 11 or 12 of the periodic table, and materials produced by the process. In an embodiment, the process includes effecting conversion of a nanoparticle precursor composition comprising group 13, 16, and 11 or 12 ions to the material of the nanoparticles in the presence of a selenol compound. Other embodiments include a process for fabricating a thin film including nanoparticles incorporating ions selected from groups 13, 16, and 11 or 12 of the periodic table as well as a process for producing a printable ink formulation including the nanoparticles.Type: GrantFiled: November 26, 2008Date of Patent: July 22, 2014Assignee: Nanoco Technologies Ltd.Inventors: Nigel Pickett, James Harris
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Publication number: 20140155640Abstract: The present invention relates to a process for the production of surface functionalised nanoparticles, such as the production of semiconductor quantum dot nanoparticles incorporating surface-bound functional groups which increase the ease with which the dots can be employed in applications, such as incorporation into solvents, inks, polymers, glasses, metals, electronic materials and devices, bio-molecules and cells. The method comprises reacting first and second nanoparticle precursor species in the presence of a nanoparticle surface binding ligand X—Y—Z wherein X is a nanoparticle surface binding group, Y is a linker group, and Z is a functional group, in which Y comprises a polyethyleneglycol group and/or Z comprises an aliphatic group incorporating a terminal unsaturated group, said reaction being effected under conditions permitting binding of said surface binding ligand to the growing nanoparticles to produce said surface functionalised nanoparticles.Type: ApplicationFiled: November 19, 2013Publication date: June 5, 2014Applicant: NANOCO TECHNOLOGIES LTD.Inventors: Nigel Pickett, Mark C. McCairn, Steven M. Daniels, Imrana Mushtaq, Paul Glarvey
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Patent number: 8741177Abstract: A method for producing aqueous compatible semiconductor nanoparticles includes binding pre-modified ligands to nanoparticles without the need for further post-binding modification to render the nanoparticles aqueous compatible. Nanoparticles modified in this way may exhibit enhanced fluorescence and stability compared to aqueous compatible nanoparticles produced by methods requiring post-binding modification processes.Type: GrantFiled: July 20, 2009Date of Patent: June 3, 2014Assignee: Nanoco Technologies Ltd.Inventors: Nigel Pickett, Mark C. McCairn
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Publication number: 20140098515Abstract: An illuminated sign has a primary light source in spaced apart relation to a transparent or translucent substrate having quantum dot phosphors printed or coated thereon. The primary light source may be a blue LED, a white LED or an LED having a significant portion of its emission in the ultraviolet region of the spectrum. The LED may be a backlight for the transparent or translucent substrate and/or an edge light, a down light or an up light.Type: ApplicationFiled: October 4, 2013Publication date: April 10, 2014Applicant: Nanoco Technologies Ltd.Inventors: Nigel Pickett, Ombretta Masala, James Harris, Nathalie Gresty
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Publication number: 20140091257Abstract: A method of producing nanoparticles comprises effecting conversion of a nanoparticle precursor composition to the material of the nanoparticles. The precursor composition comprises a first precursor species containing a first ion to be incorporated into the growing nanoparticles and a separate second precursor species containing a second ion to be incorporated into the growing nanoparticles. The conversion is effected in the presence of a molecular cluster compound under conditions permitting seeding and growth of the nanoparticles.Type: ApplicationFiled: August 7, 2013Publication date: April 3, 2014Applicant: Nanoco Technologies Ltd.Inventors: Paul O'Brien, Nigel Picket
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Patent number: 8674390Abstract: In various embodiments, the present invention provides a light emitting device cap configured for location on a light emitting device comprising or consisting essentially of a primary light source. The cap defines a well region within which is received a population of semiconductor nanoparticles such that the semiconductor nanoparticles are in optical communication with the primary light source of the light emitting device when the cap is located on the light emitting device. There is further provided a light emitting device comprising or consisting essentially of a primary light source and such a cap, as well as methods for fabricating such a cap and device.Type: GrantFiled: May 31, 2012Date of Patent: March 18, 2014Assignee: Nanoco Technologies Ltd.Inventors: James Harris, Imad Naasani, Nigel Picket
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Publication number: 20130326941Abstract: Quantum dot (QD) LEDs useful for plant, algael and photosynthetic bacterial growth applications. The QD LEDs utilizes a solid state LED (typically emitting blue or UV light) as the primary light source and one or more QD elements as a secondary light source that down-converts the primary light. The emission profile of the QD LED can be tuned to correspond to the absorbance spectrum of one or more photosynthetic pigments of the organism.Type: ApplicationFiled: April 5, 2013Publication date: December 12, 2013Applicant: Nanoco Technologies Ltd.Inventor: Nanoco Technologies Ltd.
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Patent number: 8597730Abstract: A process for the production of surface functionalised nanoparticles, such as the production of semiconductor quantum dot nanoparticles incorporating surface-bound functional groups that increase the ease with which the dots can be employed in applications, such as incorporation into solvents, inks, polymers, glasses, metals, electronic materials and devices, bio-molecules and cells. Embodiments of the method include reacting first and second nanoparticle precursor species in the presence of a nanoparticle surface binding ligand X—Y—Z where X is a nanoparticle surface binding group, Y is a linker group, and Z is a functional group, in which Y comprises a polyethyleneglycol group and/or Z comprises an aliphatic group incorporating a terminal unsaturated group, the reaction being effected under conditions permitting binding of said surface binding ligand to the growing nanoparticles to produce said surface functionalised nanoparticles.Type: GrantFiled: August 7, 2009Date of Patent: December 3, 2013Assignee: Nanoco Technologies Ltd.Inventors: Nigel Pickett, Mark C. McCairn, Steven M. Daniels, Imrana Mushtaq, Paul Glarvey