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Qd Vision Inc patents


Recent patent applications related to Qd Vision Inc. Qd Vision Inc is listed as an Agent/Assignee. Note: Qd Vision Inc may have other listings under different names/spellings. We're not affiliated with Qd Vision Inc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "Q" | Qd Vision Inc-related inventors


Semiconductor nanocrystals and methods

In one embodiment, a method for forming a coating comprising a semiconductor material on at least a portion of a population of semiconductor nanocrystals comprises providing a first mixture including semiconductor nanocrystals and an aromatic solvent, introducing one or more cation precursors and one or more anion precursors into the first mixture to form a reaction mixture for forming the semiconductor material, reacting the precursors in the reaction mixture, without the addition of an acid compound, under conditions sufficient to grow a coating comprising the semiconductor material on at least a portion of an outer surface of at least a portion of the semiconductor nanocrystals, and wherein an amide compound is formed in situ in the reaction mixture prior to isolating the coated semiconductor nanocrystals. In another embodiment, method for forming a coating comprising a semiconductor material on at least a portion of a population of semiconductor nanocrystals comprises providing a first mixture including semiconductor nanocrystals and a solvent, introducing an amide compound, one or more cation precursors and one or more anion precursors into the first mixture to form a reaction mixture for forming the semiconductor material, and reacting the precursors in the reaction mixture in the presence of the amide compound, under conditions sufficient to grow a coating comprising the semiconductor material on at least a portion of an outer surface of at least a portion of the semiconductor nanocrystals. ... Qd Vision Inc

Device including quantum dots and method for making same

One embodiment relates to a device comprises a pair of electrodes comprising an anode and a cathode; a layer comprising quantum dots disposed between the electrodes, wherein at least a portion of the quantum dots comprise a core comprising a first semiconductor material and an outer shell surrounding the core, the shell comprising a second semiconductor material, wherein the first semiconductor material confines holes better than electrons in the core and the second semiconductor material is permeable to electrons; and a first layer comprising a material capable of transporting and injecting electrons, the material comprising nanoparticles of a first inorganic semiconductor material, the first layer being disposed between the layer comprising quantum dots and the cathode, wherein the first layer and the cathode form an ohmic contact during operation of the device. In a second embodiments, a device comprises a pair of electrodes comprising an anode and a cathode; a layer comprising quantum dots disposed between the electrodes; a first layer comprising a material capable of transporting and injecting electrons, the material comprising nanoparticles of an n-doped inorganic semiconductor material, the first layer being in contact with the cathode and positioned between the emissive layer and the cathode, and a second layer comprising a material capable of transporting electrons comprising an inorganic semiconductor material, the second layer being disposed between the emissive layer and the first layer, wherein the second layer has a lower electron conductivity than the first layer. ... Qd Vision Inc

Device including quantum dots

A device including an emissive material comprising quantum dots is disclosed. In one embodiment, the device includes a first electrode and a second electrode, a layer comprising quantum dots disposed between the first electrode and the second electrodes, and a first interfacial layer disposed at the interface between a surface of the layer comprising quantum dots and a first layer in the device. ... Qd Vision Inc

Semiconductor nanocrystals and methods of preparation

Semiconductor nanocrystals and methods of making are provided.. . ... Qd Vision Inc

Device including quantum dots

A method of making a device comprises forming a layer comprising quantum dots over a substrate including a first electrode, fixing the layer comprising quantum dots formed over the substrate, and exposing at least a portion of, and preferably all, exposed surfaces of the fixed layer comprising quantum dots to small molecules. The layer comprising quantum dots can be preferably fixed in the absence or substantial absence of oxygen. ... Qd Vision Inc

Light emitting device including quantum dots

A light emitting device including a light emitting element having a light emitting surface and an optical component comprising an optical material comprising quantum dots sealed within an optically transparent structural member, the optical component being coupled to the light emitting element by a thermally conductive member is disclosed. A light emitting device including a light emitting element having a light emitting surface and an optical component comprising an optical material comprising quantum dots sealed within a structural member comprising single crystal sapphire, the optical component being coupled to the light emitting element by a thermally conductive member, is also disclosed.. ... Qd Vision Inc

Semiconductor nanocrystals and compositions and devices including same

A semiconductor nanocrystal including a core comprising a first semiconductor material comprising at least three chemical elements and a shell disposed over at least a portion of the core, the shell comprising a second semiconductor material, wherein the semiconductor nanocrystal is capable of emitting light with an improved photoluminescence quantum efficiency. Also disclosed are populations of semiconductor nanocrystals, compositions and devices including a semiconductor nanocrystal capable of emitting light with an improved photoluminescence quantum efficiency. ... Qd Vision Inc

Semiconductor nanocrystals, a method for preparing a semiconductor nanocrystal, and product including same

Disclosed are a semiconductor nanocrystal comprising an alloy comprising an alloy including a group iii element, a group ii element, antimony, and a group vi element; a method for preparing a semiconductor nanocrystal comprising an alloy comprising an alloy including a group iii element, a group ii element, antimony, and a group vi element, and a light emitting device including an emissive material comprising a semiconductor nanocrystal comprising an alloy comprising an alloy including a group iii element, a group ii element, antimony, and a group vi element.. . ... Qd Vision Inc

Luminescent particle, materials and products including same, and methods

A luminescent particle including a surface comprising glass that surrounds one or more particles of one or more light emissive materials is disclosed. Preferably the surface comprises a vitrified glass. ... Qd Vision Inc

Methods for making optical components, optical components, and products including same

Methods for making an hermetically sealed optical component are disclosed. An individual hermetically sealed optical component and products including same are also disclosed.. ... Qd Vision Inc

Semiconductor nanocrystals and method of preparation

A method for preparing semiconductor nanocrystals comprising indium arsenide is disclosed. The method includes heating a first mixture including nanocrystal seeds comprising indium arsenide with an absorbance in a range from about 700 to 800 nm and a liquid medium in a reaction vessel to a first temperature; and combining the nanocrystals seeds comprising indium arsenide with an indium-source mixture and an arsenic-source mixture under conditions suitable to increase the size of the seeds to form the semiconductor nanocrystals comprising indium arsenide, wherein the indium-source mixture includes an indium precursor, a coordinating solvent, and a carboxylic acid; and the arsenic-source mixture includes a liquid medium and an arsenic precursor represented by the formula as(y(r)3)3, where y is ge, sn, or pb; and each r, independently, is alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, heterocyclyl, aryl, or heteroaryl, wherein each r, independently, is optionally substituted by 1 to 6 substituents independently selected from hydrogen, halo, hydroxy, nitro, cyano, amino, alkyl, cycloalkyl, cycloalkenyl, alkoxy, acyl, thio, thioalkyl, alkenyl, alkynyl, cycloalkenyl, heterocyclyl, aryl, or heteroaryl. ... Qd Vision Inc

Highly stable qds-composites for solid state lighting and the method of making them through initiator-free polymerization

The invention provides a lighting device comprising (i) a light source configured to generate light source light, and (ii) a light converter configured to convert at least part of the light source light into visible converter light, wherein the light converter comprises a polymeric host material with light converter nanoparticles embedded in the polymeric host material, wherein the polymeric host material is based on radical polymerizable monomers, and wherein the polymeric host material contains equal to or less then 5 ppm radical initiator based material relative to the total weight of the polymeric host material.. . ... Qd Vision Inc

Compositions, optical component, system including an optical component, devices, and other products

The present inventions relate to optical components which include quantum confined semiconductor nanoparticles, wherein at least a portion of the nanoparticles include a ligand attached to a surface thereof, the ligand being represented by the formula x-sp-z, wherein: x represents: a primary amine group, a secondary amine group, a urea, a thiourea, an imidizole group, an amide group, a carboxylic acid or carboxylate group, a phosphonic or arsonic acid group, a phosphoric acid group, a phosphate group, a phosphite group, a phosphinic acid group, a phosphinate group, a phosphine oxide group, a phosphinite group, a phosphine group, an arsenic acid group, an arsenate group, an arsenous acid group, an arsenite group, an arsinic acid group, an arsine oxide group, or an arsine group; sp represents a group capable of allowing a transfer of charge or an insulating group; and z represents a multifunctional group including three or more functional groups capable of communicating a specific property or chemical reactivity to the nanoparticle, wherein at least three of the functional groups are chemically distinct, and wherein z is not reactive upon exposure to light. As used herein, the term “optical components” includes, but is not limited to, optical components, systems including optical components, lamps including optical components, devices including optical components, films useful in the foregoing, inks useful in making the foregoing, and compositions useful in the foregoing.. ... Qd Vision Inc








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