US Pat. No. 9,478,700

GROUP III-V/ZINC CHALCOGENIDE ALLOYED SEMICONDUCTOR QUANTUM DOTS

Nanoco Technologies Ltd.,...

1. A method of forming a quantum dot (QD), the method comprising:
reacting a group III precursor with a group V precursor to form a semiconductor core in the presence of a molecular cluster
compound, the molecular cluster compound formed in situ by the reaction of a zinc precursor and a chalcogen precursor, wherein

the zinc precursor is any one of zinc acetate and zinc stearate,
the chalcogen precursor is any one of 1-dodecanethiol, thiophenol, and 1-octane selenol, and
the group III precursor, the zinc precursor and the chalcogen precursor are present in a single reaction vessel prior to the
in situ formation of the molecular cluster compound, and wherein

the reacting of the group III precursor with the group V precursor comprises:
heating a mixture comprising the group III precursor, the group V precursor, the zinc precursor and the chalcogen precursor
at a first temperature sufficient to dissolve the group III precursor, the group V precursor, the zinc precursor and the chalcogen
precursor, and

heating the mixture to a second temperature sufficient to initiate growth of the QD.

US Pat. No. 9,206,054

METHODS FOR PREPARING CU2ZNSNS4 NANOPARTICLES FOR USE IN THIN FILM PHOTOVOLTAIC CELLS

Nanoco Technologies Ltd.,...

1. A process for making Cu2ZnSnS4 nanoparticles, comprising:
combining a copper precursor, a zinc precursor and a tin precursor in the presence of an organothiol ligand at a temperature
between room temperature and about 200° C. to form a dispersion or solution; and,

heating the dispersion or solution sufficiently to induce nanoparticle formation,
wherein the zinc precursor is zinc (II) acetate.

US Pat. No. 9,359,222

METHODS FOR PREPARING CU2ZNSNS4 NANOPARTICLES FOR USE IN THIN FILM PHOTOVOLTAIC CELLS

Nanoco Technologies Ltd.,...

1. A process for making Cu2ZnSnS4 nanoparticles, comprising:
combining a copper precursor, a zinc precursor and a tin precursor in the presence of an organothiol ligand at a temperature
between room temperature and about 200° C. to form a dispersion or solution; and,

heating the dispersion or solution without dilution sufficiently to induce nanoparticle formation.

US Pat. No. 9,255,671

MULTI-WAVELENGTH-EMITTING LENS TO REDUCE BLENDING OF LIGHT OVER LONG DISTANCES

Nanoco Technologies Ltd.,...

1. A lamp, comprising:
a primary light source; and
an optical element comprising:
a lens comprising a patterned plurality of cylindrical wells, each well containing quantum dots (QDs), and
a seal forming an airtight seal of the QDs within the wells,
wherein the patterned plurality of cylindrical wells comprise concentric circles and wherein QDs contained within wells of
a first subset of the concentric circles emit light having a different wavelength than light emitted by QDs contained within
a second subset of the concentric circles.

US Pat. No. 9,853,190

CADMIUM-FREE QUANTUM DOT NANOPARTICLES

Nanoco Technologies Ltd.,...

1. A method of making a semiconductor nanoparticle, comprising:
combining an indium source precursor and at least two metal source precursors selected from the group consisting of magnesium
source precursors, aluminum source precursors, calcium source precursors and zinc source precursors in a solvent at a first
temperature to form a mixture;

adding a molecular seeding compound to the mixture at the first temperature to form a molecular seeding compound-containing
mixture;

adding a phosphorus source precursor to the molecular seeding compound-containing mixture to form a semiconductor nanoparticle
precursor mixture;

heating the semiconductor nanoparticle precursor mixture to a second temperature; and
annealing the semiconductor nanoparticle precursor mixture at the second temperature.
US Pat. No. 9,115,097

SURFACE MODIFIED NANOPARTICLES

Nanoco Technologies Ltd.,...

1. A method of functionalizing a InP/ZnS nanoparticle, comprising:
associating a ligand interactive agent consisting essentially of a C8-C20 fatty acid with the nanoparticle;

crosslinking the ligand interactive agent with a linking/crosslinking agent consisting essentially of hexamethoxymethylmelamine;
and

binding a surface modifying ligand to the ligand interactive agent.

US Pat. No. 9,443,998

MULTI-LAYER-COATED QUANTUM DOT BEADS

Nanoco Technologies Ltd.,...

1. A composition of matter comprising a plurality of beads, wherein each bead comprises:
a primary matrix material;
a population of quantum dot nanoparticles incorporated into the primary matrix material; and
a multi-layer surface coating on each bead, the multi-layer surface coating comprising at least two barrier layers separated
by at least one spacer layer.

US Pat. No. 9,343,301

QUANTUM DOTS MADE USING PHOSPHINE

Nanoco Technologies Ltd.,...

1. A process of preparing a quantum dot (QD) nanoparticle, the process comprising:
forming a core semiconductor material on the molecular cluster compound [HNEt3]4[Znl0S4(SPh)16] by reacting one or more semiconductor precursors with hydrogen phosphide in the presence of the molecular cluster compound,
wherein the core semiconductor material comprises phosphorus ions and one or more counter ions provided by the semiconductor
precursor.

US Pat. No. 9,840,665

QUANTUM DOT COMPOSITIONS

Nanoco Technologies Ltd.,...

1. A light emitting device, the light emitting device comprising:
a primary light emitting element; and
a quantum dot (QD)-containing two-phase composition in optical communication with the primary light emitting element, the
two-phase composition comprising:

a hydrophobic inner phase comprising a hydrophobic solvent selected from fatty acid esters and ethers, isopropyl myristate,
isopropyl palmitate, phenyl palmitate, phenyl myristate, natural and synthetic oils, heat transfer liquids, fluorinated hydrocarbons,
dibutyl sebacate, and diphenyl ether;

a population of QDs dispersed within the inner phase; and
a hydrophilic outer phase.
US Pat. No. 9,466,743

COPPER-INDIUM-GALLIUM-CHALCOGENIDE NANOPARTICLE PRECURSORS FOR THIN-FILM SOLAR CELLS

Nanoco Technologies Ltd.,...

15. A process for preparing nanoparticles, comprising: mixing a copper salt, an indium salt, a gallium salt, and a thiol having
a boiling point of less than 150° C. in an organic solvent and heating the solvent to a temperature of not greater than 220°
C.

US Pat. No. 10,059,585

FORMATION OF 2D FLAKES FROM CHEMICAL CUTTING OF PREFABRICATED NANOPARTICLES AND VAN DER WAALS HETEROSTRUCTURE DEVICES MADE USING THE SAME

Nanoco Technologies Ltd.,...

1. A method of fabricating a two-dimensional nanoflake comprising:fabricating a nanoparticle; and
refluxing the nanoparticle in a solvent to form the two-dimensional nanoflake.

US Pat. No. 10,032,964

SEMICONDUCTOR NANOPARTICLE-BASED MATERIALS

Nanoco Technologies Ltd.,...

1. A method for preparing a bead-in-bead composite material, the method comprising:randomly incorporating a population of semiconductor nanoparticles within a plurality of primary beads, each primary bead comprising a primary matrix material;
providing each of said primary beads with a separate layer of a first surface coating material to form a plurality of coated primary beads; and
dispersing the plurality of coated primary beads within a secondary bead to form the bead-in-bead composite material, the secondary bead comprising a secondary matrix material.
US Pat. No. 9,755,101

GROUP 13 SELENIDE NANOPARTICLES

Nanoco Technologies Ltd.,...

1. A method of forming a semiconductor film, the method comprising:
co-depositing CuSe nanoparticles and Group 13 selenide nanoparticles on a substrate; and,
heating the substrate to a temperature sufficient to melt the CuSe nanoparticles and the Group 13 selenide nanoparticles;
wherein the Group 13 selenide nanoparticles comprise a Group 13 selenide semiconductor having the formula MxSey, wherein M is Ga or In, 0 bond and,

wherein the temperature is sufficient to remove the organic capping ligand.
US Pat. No. 9,359,202

GROUP 13 SELENIDE NANOPARTICLES

Nanoco Technologies Ltd, ...

16. A method of forming a semiconductor film, the method comprising:
co-depositing CuSe nanoparticles and Group 13 selenide nanoparticles on a substrate, and
heating the substrate to a temperature sufficient to melt the CuSe nanoparticles and the Group 13 selenide nanoparticles;
wherein

the Group 13 selenide nanoparticles comprise a Group 13 selenide semiconductor and an organic capping ligand bound to the
nanoparticle by a carbon-selenium covalent bond and wherein the temperature is sufficient to remove the organic capping ligand.

US Pat. No. 9,234,130

PREPARATION OF NANOPARTICLE MATERIALS

Nanoco Technologies Ltd.,...

1. A nanoparticle prepared by a process comprising:
effecting conversion of a nanoparticle precursor composition to a core semiconductor material, the precursor composition comprising
a first precursor species containing a first ion to be incorporated into the core semiconductor material and a separate second
precursor species containing a second ion to be incorporated into the core semiconductor material,

wherein the conversion is effected in the presence of a molecular cluster compound that contains at least one element of the
nanoparticle not present in either the first precursor species or the second precursor species, the conversion is effected
under conditions permitting seeding and growth of the nanoparticles and the ratio of the number of moles of the molecular
cluster compound to the total number of moles of the first and second precursor species is between 0.0035:1 and 0.0045:1.

US Pat. No. 9,196,767

PREPARATION OF COPPER SELENIDE NANOPARTICLES

Nanoco Technologies Ltd.,...

1. A population of nanoparticles, comprising:
copper selenide nanoparticles represented by the formula Cu(2-x)Se, where 0?x<2 and wherein the surface of the nanoparticles are bound to ligands via a selenium-carbon bond.

US Pat. No. 9,783,733

PREPARATION OF QUANTUM DOT BEADS HAVING A SILYL SURFACE SHELL

Nanoco Technologies Ltd.,...

1. A method for preparing quantum dot-containing microbeads, the method comprising:
preparing a mixture comprising quantum dots (QDs), 3-(trimethoxysilyl) propyl methacrylate, an acrylic monomer, a cross-linking
agent, and an initiator,

polymerizing the mixture to form polymer microbeads having a silyl surface shell,
wherein during polymerization the acrylic monomer and 3-(trimethoxysilyl) propyl methacrylate undergo phase separation.

US Pat. No. 9,666,768

QUANTUM DOT NANOPARTICLES HAVING ENHANCED STABILITY AND LUMINESCENCE EFFICIENCY

Nanoco Technologies Ltd.,...

1. A quantum dot (QD) nanoparticle comprising:
a plurality of first dithiocarbamate capping ligands having a formula selected from the group consisting of
wherein each R1 is a functional group; and
a plurality of second dithiocarbamate capping ligands having the formula
wherein R2 is an alkyl group and R3 is a functional group.

US Pat. No. 9,574,135

GAS PHASE ENHANCEMENT OF EMISSION COLOR QUALITY IN SOLID STATE LEDS

Nanoco Technologies Ltd.,...

1. A composition comprising:
a light-emitting semiconductor material having pores therein, the pores comprising:
first pores having first pore diameters; and
second pores having second pore diameters larger than the diameters of the first pores;
first color-emitting quantum dots (QDs) disposed within the first pores and having diameters essentially equal to the first
pore diameters; and

second color-emitting QDs disposed within the second pores and having diameters essentially equal to the second pore diameters;
wherein

the composition is free of solvent.

US Pat. No. 9,567,520

PREPARATION OF NANOPARTICLE MATERIALS

Nanoco Technologies Ltd.,...

1. A method of producing nanoparticles comprising:
effecting conversion of a nanoparticle precursor composition to a material of the nanoparticles,
said precursor composition comprising a first precursor species containing a first ion to be incorporated into the nanoparticles
and a separate second precursor species containing a second ion to be incorporated into the nanoparticles,

wherein said conversion is effected in the presence of a molecular cluster compound comprising both the first ion to be incorporated
into the nanoparticles and the second ion to be incorporated into the nanoparticles, under conditions permitting seeding and
growth of the nanoparticles.

US Pat. No. 9,893,220

CIGS NANOPARTICLE INK FORMULATION HAVING A HIGH CRACK-FREE LIMIT

Nanoco Technologies Ltd.,...

1. A method for forming a photovoltaic film on a substrate comprising:
dissolving only CuInSe2 nanoparticles in a first solvent to form a first solution;

dissolving only CuInS2 nanoparticles in a second solvent to form a second solution;

combining only the first solution and the second solution to form a third solution;
adding only oleic acid to the third solution to form a binder-free ink;
depositing the ink on the substrate to form a first film;
annealing the first film in an inert atmosphere;
depositing additional ink on the first film on the substrate to form a second film; and
annealing the second film in an inert atmosphere,
wherein, the first and second films are further annealed under a selenium-rich atmosphere comprising H2Se gas in an inert carrier gas, the H2Se gas being at a concentration of 2 to 10% by volume, and

wherein after annealing each of the first film and the second film are crack-free films that comprise a crystalline CuIn(S,Se)2 layer with grain sizes on the order of 480 nm.

US Pat. No. 9,543,481

SEMICONDUCTOR NANOPARTICLE-BASED MATERIALS

Nanoco Technologies Ltd.,...

1. A method of making a quantum dot (QD)-containing bead-in-bead composition, the method comprising:
encapsulating a plurality of QDs within a first bead material to provide a plurality of primary beads, each primary bead containing
a plurality of QDs encapsulated therein;

encapsulating a plurality of the primary beads within a second bead material to provide a plurality of secondary beads, each
secondary bead containing a plurality of primary beads encapsulated therein;

incorporating a stability-enhancing additive into either the primary bead or into the secondary bead; and,
coating the primary beads with an inorganic protective surface.

US Pat. No. 10,010,938

METHOD FOR HEATING A SLURRY SYSTEM

Nanoco Technologies Ltd.,...

1. An apparatus comprising:a reactor;
a reservoir;
a heater in thermal contact with the reservoir;
a pump;
a valve assembly having a first 3-port valve and a second 3-port valve;
a first transparent supply line in fluid communication with the reservoir at a first end thereof and with the pump at a second end thereof;
a second transparent supply line in fluid communication with the pump at a first end thereof and with the valve assembly at a second end thereof;
a delivery line in fluid communication with the valve assembly at a first end thereof and with the reactor at a second end thereof;
a transparent return line in fluid communication with the valve assembly at a first end thereof and with the reservoir at a second end thereof;wherein the valve assembly is configured such that in a first state the valve assembly provides fluid communication from the reservoir to the reactor via the first supply line, the pump, the second supply line, and the delivery line and, in a second state, provides recirculation of the contents of the reservoir via the first supply line, the pump, the second supply line, and the return line.

US Pat. No. 9,960,314

INORGANIC SALT-NANOPARTICLE INK FOR THIN FILM PHOTOVOLTAIC DEVICES AND RELATED METHODS

Nanoco Technologies Ltd.,...

1. A method of forming a crystalline semiconductor layer, the method comprising:providing an ink comprising a solvent, a population of nanoparticles having the formula CuwInxGa1-xSeyS2-y, wherein 0.1?w?2, 0?x?1 and 0?y?2, an inorganic salt, and an additive,
applying the ink to a substrate to form a film on the substrate,
annealing the film to form the crystalline semiconductor layer,
wherein the additive comprises one or more of a foam inhibitor, a thickening agent, a dispersing agent, a surface tension modifier, and a viscosity modifier.
US Pat. No. 9,840,664

SURFACE MODIFIED NANOPARTICLES

Nanoco Technologies Ltd.,...

1. A method of functionalizing an InP/ZnS nanoparticle, comprising:
associating, in a solvent, a ligand interactive agent comprising a C8-C20 fatty acid with the nanoparticle to form a mixture comprising a ligand interactive agent-nanoparticle association complex;

adding a linking/crosslinking agent comprising a melamine and a surface modifying ligand to the mixture; and
reacting the ligand interactive agent-nanoparticle association complex, the linking/crosslinking agent and the surface modifying
ligand to form a functionalized nanoparticle having an outer surface comprising the surface modifying ligand.

US Pat. No. 9,634,198

QUANTUM DOT CHIP ON BOARD

Nanoco Technologies Ltd.,...

1. A light-emitting device comprising:
a plurality of light emitting diodes (LEDs) in a chip on board configuration mounted on a printed circuit board (PCB);
a thermal shield comprising a cylindrical ceramic ring surrounding the plurality of LEDs and having a first end and an opposing
second end and attached at the first end to the PCB;

a first encapsulant layer located within the cylindrical ring and encapsulating the plurality of light emitting diodes (LEDs);
a quantum dot nanoparticle-containing layer disposed on the first encapsulant layer and in optical communication with the
plurality of light emitting diodes (LEDs), the quantum dot nanoparticle-containing layer comprising a plurality of quantum
dot nanoparticles suspended within a matrix material;

a substantially transparent cap disposed on the second end of the cylindrical ring;
a seal between the substantially transparent cap and the second end of the cylindrical ring; and
a second encapsulant layer disposed between the quantum dot nanoparticle-containing layer and the substantially transparent
cap.

US Pat. No. 9,960,298

PREPARATION OF COPPER-RICH COPPER INDIUM (GALLIUM) DISELENIDE/DISULFIDE NANOPARTICLES

Nanoco Technologies Ltd.,...

1. A method for preparing copper-rich CIGS nanoparticles having the general formula CuxInyGazSaSeb, wherein y+z=1, a+b=2, and x>y+z, the method comprising:heating a copper salt together with at least one salt selected from the group consisting of indium salts and gallium salts in a solvent at a first temperature to produce a reaction solution;
adding an organo-chalcogen precursor to the reaction solution;
heating the reaction solution to a second temperature while stirring for a first time interval;
cooling the reaction solution to a third temperature, the third temperature being between the second temperature and room temperature;
stirring the reaction solution for a second time interval at the third temperature to anneal the reaction solution, the second time interval being between about 4 hours and about 24 hours;
cooling the reaction solution from the third temperature to room temperature; and
isolating nanoparticles from the reaction solution.

US Pat. No. 10,014,452

SEMICONDUCTOR NANOPARTICLE-BASED LIGHT-EMITTING DEVICES AND ASSOCIATED MATERIALS AND METHODS

Nanoco Technologies Ltd.,...

1. A light-emitting device comprising:a primary light source submerged in a formulation and in optical communication with the formulation,
wherein the formulation comprises:
a host encapsulation medium; and
a plurality of discrete microbeads dispersed throughout the host encapsulation medium, each microbead comprising:
an optically transparent medium; and
a population of semiconductor nanoparticles incorporated within the optically transparent medium.
US Pat. No. 9,966,508

METHODS FOR FABRICATING QUANTUM DOT POLYMER FILMS

Nanoco Technologies Ltd.,...

1. A method for fabricating quantum dot (QD) polymer films comprising:combining a quantum dot suspension with at least one chain transfer agent (CTA) to form a QD-CTA mixture;
adding a methyl(acrylate) monomer, a photoinitiator, and a crosslinker to the QD-CTA mixture to form a QD-CTA-resin mixture;
depositing the QD-CTA-resin mixture on a substrate; and
curing the QD-CTA-resin mixture with UV light to form a film.
US Pat. No. 9,708,532

QUANTUM DOT COMPOSITIONS

Nanoco Technologies Ltd.,...

1. A two-phase composition comprising:
a hydrophobic inner phase comprising a hydrophobic solvent selected from fatty acid esters and ethers, isopropyl myristate,
isopropyl palmitate, phenyl palmitate, phenyl myristate, natural and synthetic oils, heat transfer liquids, fluorinated hydrocarbons,
dibutyl sebacate, and diphenyl ether;

quantum dots (QDs) dispersed within the inner phase; and
a hydrophilic outer phase.

US Pat. No. 10,768,485

QUANTUM DOT ARCHITECTURES FOR COLOR FILTER APPLICATIONS

Nanoco Technologies Ltd.,...

1. A quantum dot comprising:a core comprising indium and having a first band gap;
a first layer substantially surrounding the core and comprising a first metal chalcogenide having a second band gap that is greater than the first band gap; and
a second layer on the first layer comprising a second metal chalcogenide having a third band gap that is greater than the second band gap,
wherein the first layer comprises three or more monolayers and less than or equal to fifteen monolayers of the first metal chalcogenide.

US Pat. No. 10,167,545

INDIUM TIN OXIDE THIN FILMS WITH BOTH NEAR-INFRARED TRANSPARENCY AND EXCELLENT RESISTIVITY

Nanoco Technologies Ltd.,...

1. A method for a sputter deposition of an indium tin oxide film comprising:providing an indium tin oxide target comprising In2O3 and SnO2 in a ratio of about 90:10 by weight;
providing argon alone as a sputter gas at a pressure of about 3.5 millitorr; and
sputtering the indium tin oxide target on a substrate at a radio frequency power density of about 1.0 W/cm2 to obtain an indium tin oxide film having a transmission greater than 75% from 700 nm to 1500 nm.
US Pat. No. 10,177,263

CU2XSNY4 NANOPARTICLES

Nanoco Technologies Ltd.,...

1. A nanoparticle comprising:a semiconductor nanocrystal having an outer surface, the semiconductor nanocrystal having the formula Cu2XSnY4, where X is Cd, Hg, Ni, Co, Mn, or Fe and Y is S or Se; and
a surface coating on the outer surface of the semiconductor nanocrystal and consisting of labile organo-chalcogen ligands.
US Pat. No. 10,170,651

METAL-DOPED CU(IN,GA) (S,SE)2 NANOPARTICLES

Nanoco Technologies Ltd.,...

1. A process for preparing sodium-doped nanocrystals comprising:adding a sodium dialkyldithiocarbamate to a mixture of copper-, indium-, and gallium-containing reagents at the beginning of a synthesis reaction to form sodium-doped Cu(In,Ga)(S,Se)2 nanoparticles.

US Pat. No. 10,655,815

QUANTUM DOT-BASED LIGHTING DEVICES FOR ANIMAL HUSBANDRY AND AQUARIUMS

Nanoco Technologies Ltd.,...

1. A lighting fixture for illuminating a space having animals therein comprising:a backlight;
a first lens comprising red light-emitting quantum dots; and
a second lens comprising green light-emitting quantum dots,
wherein each of the first and second lenses is movable relative to the backlight for entry into and withdrawal from optical communication with the backlight, and
wherein the first and second lenses are optically communicable with the backlight at the same time.

US Pat. No. 10,483,440

CADMIUM-FREE QUANTUM DOT NANOPARTICLES

Nanoco Technologies Ltd.,...

1. A quantum dot nanoparticle comprising:a core having an etched surface and comprising indium, phosphorus, magnesium, zinc, and sulfur;
a first shell disposed on the etched surface of the core; and
a second shell disposed on the first shell,
wherein the quantum dot nanoparticle emits light in the green region of the visible spectrum.

US Pat. No. 10,312,418

SEMICONDUCTOR NANOPARTICLE-BASED LIGHT EMITTING MATERIALS

Nanoco Technologies Ltd.,...

1. A method of fabricating a light emitting device incorporating a light emitting layer comprising a plurality of light emitting beads dispersed within a host matrix material, each of said light emitting beads comprising a population of semiconductor nanoparticles embedded within a polymeric encapsulation medium, the method comprising:providing a dispersion containing said light emitting beads, an initiator, trimethylol propane trimethacrylate (TMPTM) and lauryl methacrylate;
depositing said dispersion on a surface of a diffuser sheet to form a film thereon;
annealing said film to produce said light emitting layer on the surface of the diffuser sheet; and
placing the diffuser sheet over a light source such that the diffuser sheet is between the light source and the light emitting layer.
US Pat. No. 10,177,262

CU2XSNY4 NANOPARTICLES

Nanoco Technologies Ltd.,...

1. A process for making Cu2XSnY4 nanoparticles, the process comprising:reacting in a solvent a copper precursor, an X precursor and a tin precursor in the presence of a primary chalcogen precursor comprising a labile organo-chalcogen to form a nanoparticle and to form a surface coating on the nanoparticle, the surface coating consisting of the labile organo-chalcogen
wherein X is Zn, Cd, Hg, Ni, Co, Mn or Fe and Y is S and/or Se, and
wherein the primary chalcogen precursor comprises Se when the X precursor comprises Zn.

US Pat. No. 10,461,224

MOLDED NANOPARTICLE PHOSPHOR FOR LIGHT EMITTING APPLICATIONS

Nanoco Technologies Ltd.,...

1. A light emitting device, the device comprising:a light emitting diode (LED) package, the LED package comprising:
a housing; and
an LED located within the housing; and
a phosphor composition disposed within the housing and in optical communication with the LED, the phosphor composition comprising:
a molded matrix material;
a plurality of nanoparticles suspended within the molded matrix material; and
a gas barrier material coated upon every surface of the molded matrix material.

US Pat. No. 10,329,479

SURFACE-MODIFIED NANOPARTICLES

Nanoco Technologies Ltd.,...

1. A display comprising:a light-emitting element; and
a film in optical communication with the light emitting element, the film comprising:
a matrix material; and
a population of surface-modified nanoparticles dispersed in the matrix material, each surface-modified nanoparticle comprising:
a nanoparticle having a core and an external surface; and
amphiphilic block copolymers on the external surface of the nanoparticle,
wherein the block copolymers are any one of a polyalkylene glycol-poly(alkylene sulfide) block copolymer and a block copolymer consisting of a first block that is a reversible addition fragmentation chain transfer agent (RAFT-CTA) and a second block that is a polyalkylene glycol.

US Pat. No. 10,233,390

GAS PHASE ENHANCEMENT OF EMISSION COLOR QUALITY IN SOLID STATE LEDS

Nanoco Technologies Ltd.,...

1. A method for synthesizing quantum dots (QDs) in a light-emitting semiconductor material, the method comprising:flowing gaseous QD precursors through first pores in a semiconductor material to effect reaction of the QD precursors in the absence of liquid solvent and grow a plurality of first QDs in the first pores having diameters essentially equal to the first pore diameters; and
flowing gaseous QD precursors through second pores in a semiconductor material to effect reaction of the QD precursors in the absence of liquid solvent and grow plurality of second QDs in the second pores having diameters essentially equal to the second pore diameters;
wherein the second pores have diameters larger than the diameters of the first pores.

US Pat. No. 10,196,562

QUANTUM DOTS STABILIZED WITH A METAL THIOL POLYMER

Nanoco Technologies Ltd.,...

1. A composition of matter comprising:a powder comprising a plurality of beads, wherein each bead comprises:
a primary matrix material comprising Zn-DDT; and
a population of quantum dot nanoparticles incorporated into the primary matrix material.
US Pat. No. 10,468,559

QUANTUM DOT NANOPARTICLES HAVING ENHANCED STABILITY AND LUMINESCENCE EFFICIENCY

Nanoco Technologies Ltd.,...

1. A method for preparing quantum dot (QD) nanoparticles comprising a plurality of dithiocarbamate capping ligands, the method comprising:reacting a core nanoparticle with shell precursors in the presence of capping ligands to grow at least one semiconductor shell on the core, to form a core-shell nanoparticle having the capping ligands bound to an outermost surface thereof; and
exchanging at least a portion of the capping ligands with the dithiocarbamate capping ligands,
wherein the core is an InP or an InPZnS alloy-based core, and the shell precursors comprise zinc and sulfur or selenium.
US Pat. No. 10,351,767

GROUP III-V/ZINC CHALCOGENIDE ALLOYED SEMICONDUCTOR QUANTUM DOTS

Nanoco Technologies Ltd.,...

1. A method of forming a quantum dot (QD), the method comprising:forming a zinc chalcogenide molecular cluster compound in situ from a zinc precursor and a chalcogen precursor; and
growing a semiconductor core in the presence of the zinc chalcogenide molecular cluster compound from a group III precursor and a group V precursor by
heating a mixture comprising the group III precursor, the group V precursor, the zinc precursor and the chalcogen precursor at a first temperature sufficient to dissolve the group III precursor, the group V precursor, the zinc precursor and the chalcogen precursor, and
heating the mixture to a second temperature sufficient to initiate growth of a QD core, wherein
the zinc precursor is zinc acetate or zinc stearate,
the chalcogen precursor is 1-dodecanethiol, thiophenol or 1-octane selenol,
the group III precursor comprises a phosphine, an alkyl, an aryl, an acetate, an acetylacetonate, a carbonate, a beta-diketonate, an oxide, or a nitrate.

US Pat. No. 10,227,529

PREPARATION OF NANOPARTICLE MATERIALS

Nanoco Technologies Ltd.,...

1. A method of producing nanoparticles comprising:effecting conversion of a nanoparticle precursor composition to a material of the nanoparticles,
said precursor composition comprising a first precursor species containing a group 13 element to be incorporated into the nanoparticles and a separate second precursor species containing either a group 15 or a group 16 element to be incorporated into the nanoparticles,
wherein said conversion is effected in the presence of molecular cluster compounds under conditions permitting seeding and growth of the nanoparticles on the molecular cluster compounds.

US Pat. No. 10,128,418

LED CAP CONTAINING QUANTUM DOT PHOSPHORS

Nanoco Technologies Ltd.,...

1. A cap for an LED package having a central well containing an LED and an upper surface surrounding the central well, said cap comprising:a peripheral portion sized and configured to engage the upper surface of the LED package; a central portion depressed from the peripheral portion and comprising a side wall and a base wall, the side wall and the base wall lining a cap well;
a phosphor incorporated in the base wall of the cap; and
a plurality of quantum dots in the cap well,
wherein the side wall of the cap is configured to abut the central well of the LED package.

US Pat. No. 10,699,606

METHOD AND APPARATUS USING A COMBINATION OF QUANTUM DOT-CONTAINING FILMS WITH OPTICAL FILTER FILMS FOR SIGNAGE AND ILLUMINATION APPLICATIONS

Nanoco Technologies Ltd.,...

1. An illuminated sign comprising:a source of blue light;
a quantum dot-containing film that, when illuminated by the source of blue light, produces solely green light and passes a portion of the blue light therethrough; and
a blue cutoff filter having one or more openings for the transmission of light therethrough, the blue cutoff filter in optical communication with the quantum dot-containing film and configured to allow:
a mixture of excess blue light from the source of blue light and green light from the quantum dot-containing film to pass through the one or more openings of the blue cutoff filter; and
green light to pass through portions of the blue cutoff filter that are not the one or more openings.

US Pat. No. 10,692,977

HETEROSTRUCTURES AND ELECTRONIC DEVICES DERIVED THEREFROM

Nanoco Technologies Ltd.,...

1. A graphene-based vertical heterostructure comprising at least the following layers in sequence:a first graphene layer comprising graphene or modified graphene;
a first insulating layer;
a first TMDC layer;
a second insulating layer;
a second TMDC layer;
a third insulating layer; and
a second graphene layer comprising graphene or modified graphene;wherein the layers are stacked to form a laminate structure.

US Pat. No. 10,643,507

METHOD AND APPARATUS USING A COMBINATION OF QUANTUM DOT-CONTAINING FILMS WITH OPTICAL FILTER FILMS FOR SIGNAGE AND ILLUMINATION APPLICATIONS

Nanoco Technologies Ltd.,...

1. An illuminated sign comprising:a source of blue light;
a quantum dot-containing film that, when illuminated by the source of blue light, produces solely green light and passes a portion of the blue light therethrough; and
a blue cutoff filter having one or more openings for the transmission of light therethrough, the blue cutoff filter in optical communication with the quantum dot-containing film and configured to allow:
a mixture of excess blue light from the source of blue light and green light from the quantum dot-containing film to pass through the one or more openings of the blue cutoff filter; and
green light to pass through portions of the blue cutoff filter that are not the one or more openings.

US Pat. No. 10,610,591

LIGHT RESPONSIVE QUANTUM DOT DRUG DELIVERY SYSTEM

Nanoco Technologies Ltd.,...

1. A light responsive quantum dot (QD) drug delivery system (QD-DDS) comprising water soluble QD nanoparticles loaded with drug molecules, wherein the water soluble QD nanoparticles each have a hydrodynamic size of 10-20 nm and each comprise a core semiconductor material or a core/shell semiconductor material and an outer layer comprising an inner hydrophobic domain, a middle amphiphilic domain, and an outer hydrophilic domain, wherein the inner hydrophobic domain is formed from a ligand interactive agent selected from C8-20 fatty acids, C8-20 fatty acid esters, and cholesterol, the middle amphiphilic domain is formed from at least one surface modifying ligand crosslinked to the ligand interactive agent in a solution comprising hexamethoxymethylmelamine, and the outer hydrophilic domain is a coating ligand selected from carboxyls, OH, NH2, NH3+ and SH groups, and wherein the loaded drug molecule enters the domain that correlates with phobicity of the drug molecule and is releasable from the QD-DDS upon excitation of the QD.

US Pat. No. 10,217,908

SEMICONDUCTOR NANOPARTICLE-BASED LIGHT EMITTING MATERIALS

Nanoco Technologies Ltd.,...

1. A light emitting device comprising:a light emitting diode;
a light diffuser in spaced-apart relation to the light-emitting diode and having a first surface oriented towards the light emitting diode and an opposing second surface oriented away from the light emitting diode; and
a light emitting layer in direct contact with the opposing second surface of the light diffuser and in optical communication with the light diffuser, said light emitting layer comprising a plurality of light emitting particles embedded within a host matrix material, each of said light emitting particles comprising a population of semiconductor nanoparticles embedded within a polymeric encapsulation medium,
wherein the polymeric encapsulation medium comprises a first polymer and the host matrix material comprises a second polymer and the first and second polymers are formed from a reverse emulsion so as to form microbeads encompassing the semiconductor nanoparticles.

US Pat. No. 10,765,885

PHOTOTHERAPY MASK WITH QUANTUM DOT PHOSPHORS

Nanoco Technologies Ltd.,...

1. A phototherapy method comprising:providing a shell having eye openings and an inner surface contoured to a user's face;
providing a flexible array of light-emitting diodes affixed to the inner surface of the shell;
providing a first, interchangeable, flexible quantum dot-containing film substantially covering the array of light-emitting diodes, said first, flexible quantum dot-containing film emitting light at a first wavelength in response to photo-excitation by light from the array of light-emitting diodes;
exposing the face of a patient wearing the shell provided with the flexible array of light-emitting diodes affixed to the inner surface of the shell and the first, replaceable, flexible, quantum dot-containing film substantially covering the array of light-emitting diodes to light of the first wavelength by activating the light-emitting diodes for a first period of time;
replacing the first, interchangeable, flexible, quantum dot-containing film with a second, flexible, quantum dot-containing film said second, flexible, quantum dot-containing film emitting light at a second wavelength in response to photo-excitation by light from the array of light-emitting diodes; and
exposing the face of a patient wearing the shell provided with the flexible array of light-emitting diodes affixed to the inner surface of the shell and the second, flexible, quantum dot-containing film substantially covering the array of light-emitting diodes to light of the second wavelength by activating the light-emitting diodes for a second period of time.

US Pat. No. 10,662,074

TEMPLATE-ASSISTED SYNTHESIS OF 2D NANOSHEETS USING NANOPARTICLE TEMPLATES

Nanoco Technologies Ltd.,...

1. A composition of matter comprising:a nanoparticle template comprising a material having a first crystal structure; and
a two-dimensional (2D) transition metal dichalcogenide nanosheet at least partially covering a surface of the nanoparticle template, the two-dimensional (2D) transition metal dichalcogenide nanosheet comprising a material having a second crystal structure,
wherein the first crystal structure and the second crystal structure exhibit therebetween a lattice mismatch of around 5% or less.
US Pat. No. 10,377,944

SURFACE MODIFIED NANOPARTICLES

Nanoco Technologies Ltd.,...

1. A composition comprising a nanoparticle and guaifenesin bound thereto.
US Pat. No. 10,246,633

HIGHLY STABLE QUANTUM DOT-CONTAINING POLYMER FILMS

Nanoco Technologies Ltd.,...

1. A film comprising:a plurality of semiconductor nanoparticles dispersed in a cured inner phase that comprises lauryl methacrylate and trimethylolpropane trimethacrylate; and,
an outer phase that comprises an acrylate-functionalized silica nanoparticle resin.