Abstract: A quantum dot, including a core including a first semiconductor material that includes indium; and a shell including a second semiconductor material, and disposed on the core, wherein the first semiconductor material and the second semiconductor material are different, wherein the shell has at least two branch portions and a valley portion connecting the at least two branch portions, at least one of the at least two branch portions comprises Zn, Se, and S, and a content of sulfur in the at least one branch portion increases in a direction away from the core.

Abstract: A semiconductor nanocrystal and a preparation method thereof, where the semiconductor nanocrystal include a bare semiconductor nanocrystal and a water molecule directly bound to the bare semiconductor nanocrystal.

Abstract: A quantum dot composition comprising a quantum dot, a metal thiolate complex compound, and a solvent, wherein the metal thiolate complex compound includes a hydrophobic moiety, a thioether moiety (—S—), and a polyvalent metal, and wherein the hydrophobic moiety includes a fluorinated organic group, a multi-aromatic ring-containing group having a backbone structure that includes a quaternary carbon atom, which is a part of a cyclic group, and two aromatic rings bound to the quaternary carbon atom, or a combination thereof.

Abstract: A backlight unit for a liquid crystal display device, the backlight unit including: an light emitting diode (“LED”) light source; a light conversion layer disposed separate from the LED light source to convert light emitted from the LED light source to white light and to provide the white light to the liquid crystal panel; and a light guide panel disposed between the LED light source and the light conversion layer, wherein the light conversion layer includes a semiconductor nanocrystal and a polymer matrix, and wherein the polymer matrix includes a first polymerized polymer of a first monomer including at least two thiol (—SH) groups, each located at a terminal end of the first monomer, and a second monomer including at least two unsaturated carbon-carbon bonds, each located at a terminal end of the second monomer.

Abstract: A display device includes a first electrode, a pixel define layer disposed on the first electrode, the pixel define layer including an opening, an organic emission layer disposed on the pixel define layer, the organic emission layer in electrical communication with the first electrode through the opening, a second electrode disposed on the organic emission layer, a light recycle layer disposed on the second electrode, and a color filter layer disposed on the light recycle layer, the color filter layer including a quantum dot, wherein a width of the organic emission layer is longer than a width of the color filter layer.

Abstract: A quantum dot-polymer composite including a polymer matrix; and a plurality of quantum dots dispersed in the polymer matrix, wherein the quantum dot includes a core including a first semiconductor material; and a shell including a second semiconductor material disposed on the core, wherein the quantum dot is cadmium-free, wherein the shell has at least two branches and at least one valley portion connecting the at least two branches, and wherein the first semiconductor material is different from the second semiconductor material.

Abstract: A process of synthesizing Ga—Se nanocrystals is provided, the process including: contacting a first precursor containing gallium with a second precursor containing selenium to obtain a Ga—Se single precursor; and reacting the Ga—Se single precursor in a solvent in the presence of a ligand compound, and optionally with a third precursor including an element (A) other than gallium and selenium, to prepare a Ga—Se nanocrystal represented by Chemical Formula 1: GaSexAy??[Chemical Formula 1] wherein x is about 1.1 to 3, and y is about 0.1 to 4.

Abstract: A photosensitive composition including: a plurality of quantum dots, wherein the quantum dot includes an organic ligand with a hydrophobic moiety bound to a surface of the quantum dot; a binder; a photopolymerizable monomer having a carbon-carbon double bond; a photoinitiator; and a solvent, wherein the binder includes a multiple aromatic ring-containing polymer including a main chain including a carboxylic acid group and a backbone structure incorporated in the main chain, wherein the backbone structure includes a quaternary carbon atom, which is a part of a cyclic group, and two aromatic rings bound to the quaternary carbon atom, and wherein the plurality of quantum dots are dispersed in the binder.

Abstract: Disclosed are a quantum dot population including a plurality of cadmium free quantum dots, a quantum dot polymer composite including the same, and a display device including the same. The plurality of cadmium free quantum dots includes: a semiconductor nanocrystal core comprising indium and phosphorous, a first semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core and comprising zinc and selenium, and a second semiconductor nanocrystal shell disposed on the first semiconductor nanocrystal shell and comprising zinc and sulfur, wherein an average particle size of the plurality of cadmium free quantum dots is greater than or equal to about 5.5 nm, a standard deviation of particle sizes of the plurality of cadmium free quantum dots is less than or equal to about 20% of the average particle size, and an average solidity of the plurality of cadmium free quantum dots is greater than or equal to about 0.85.

Abstract: A quantum dot includes a core-shell structure including a core including a first semiconductor nanocrystal and a shell disposed on the core, and including a material at least two different halogens, and the quantum dot does not include cadmium.

Abstract: A quantum dot including a first ligand and a second ligand on a surface of the quantum dot, a composition or composite including the same, and a device including the same. The first ligand includes a compound represented by Chemical Formula 1 and the second ligand includes a compound represented by Chemical Formula 2: MAn??Chemical Formula 1 wherein M, n, and A are the same as defined in the specification; and wherein, R1, L1, Y1, R, k1, and k2 are the same as defined in the specification.

Abstract: A composition including: a plurality of quantum dots; a monomer combination including a first monomer having at least two thiol groups at terminal ends of the first monomer and a second monomer having at least two carbon-carbon double bonds at terminal ends of the second monomer; and an additive, a composite prepared therefrom, and an electronic device including same are disclosed. The additive includes a cyclosiloxane compound having a reactive moiety, a (meth)acrylate salt of a polyvalent metal, and a dithiocarbamate salt of a polyvalent metal, or a combination thereof, and wherein the reactive moiety includes a carbon-carbon double bond, a thiol group, or a combination thereof.

Abstract: A method for manufacturing a display device includes: providing a plurality of light emitting elements on a substrate; providing a first photosensitive resin layer on the light emitting elements; driving a plurality of first light emitting elements among the plurality of light emitting elements, the driving of the plurality of first light emitting elements hardening a portion of the first photosensitive resin layer which corresponds to the plurality of first light emitting elements; and providing a first color converting layer as the portion of the first photosensitive resin layer which is hardened, by removing a remaining portion of the first photosensitive resin layer.

Abstract: A quantum dot aggregate particle including a plurality of quantum dots, a polyvalent metal compound, and a thiol compound having at least two thiol groups at its end terminals, wherein a size of the quantum dot aggregate particle is in a range from about 20 nanometers to 10 micrometers.

Abstract: A photosensitive composition and a quantum dot-polymer composite pattern formed from the photosensitive composition are disclosed, and the photosensitive composition includes: a plurality of quantum dots; a color filter material including an absorption dye, an absorption pigment, or a combination thereof; a polymer binder; a photopolymerizable monomer having a carbon-carbon double bond; a photoinitiator; and a solvent, wherein in a normalized photoluminescence spectrum of the quantum dot and a normalized ultraviolet-visible absorption spectrum of the color filter material, a photoluminescence peak wavelength (PL peak wavelength) of the quantum dot and a wavelength of maximum absorbance of the color filter material do not overlap with each other, and the color filter material is included in an amount of less than or equal to 1 part by weight per 10 parts by weight of the plurality of quantum dots.

Abstract: A quantum dot including a first ligand and a second ligand on a surface of the quantum dot, a composition or composite including the same, and a device including the same. The first ligand includes a compound represented by Chemical Formula 1 and the second ligand includes a compound represented by Chemical Formula 2: MAn??Chemical Formula 1 wherein M, n, and A are the same as defined in the specification; and wherein, R1, L1, Y1, R, k1, and k2 are the same as defined in the specification.

Abstract: A quantum dot including a core and a shell disposed on the core wherein one of the core and the shell includes a first semiconductor nanocrystal including zinc and sulfur and the other of the core and the shell includes a second semiconductor nanocrystal having a different composition from the first semiconductor nanocrystal, the first semiconductor nanocrystal further includes a metal and a halogen configured to act as a Lewis acid in a halide form, an amount of the metal is greater than or equal to about 10 mole percent (mol %) based on a total number of moles of sulfur, and an amount of the halogen is greater than or equal to about 10 mol % based on a total number of moles of sulfur, a method of producing the same, and a composite and an electronic device including the same.

Abstract: Disclosed are a quantum dot and a quantum dot-polymer composite and a device including the same, wherein the quantum dot includes a semiconductor nanocrystal core including indium (In) and phosphorous (P), a first semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core, the first semiconductor nanocrystal shell including zinc and selenium, and a second semiconductor nanocrystal shell disposed on the first semiconductor nanocrystal shell, the second semiconductor nanocrystal shell including zinc and sulfur, wherein the quantum dot does not include cadmium, wherein in the quantum dot, a mole ratio of sulfur with respect to selenium is less than or equal to about 2.5:1.

Abstract: A photosensitive composition, a quantum dot polymer composite pattern prepared therefrom, and a layered structure and an electronic device including the same. The photosensitive composition includes a quantum dot; a carboxylic acid group-containing binder; a multi-thiol compound including a thiol group at each terminal end of the multi-thiol compound; a photopolymerizable monomer including a carbon-carbon double bond; a metal oxide fine particle; a polymeric stabilizer; a photoinitiator; and a solvent, wherein the polymeric stabilizer includes a polymer including —RO—, —R1COO—, —R1OCO—, —CR1R2—CAR—, —OCONH—R—NHCOO—R?—, or a combination thereof, as a repeating unit.

Abstract: A quantum dot including a seed including a first semiconductor nanocrystal including a first Group II-VI compound, a quantum well surrounding the seed, the quantum well including a second semiconductor nanocrystal including a Group IIIA metal except aluminum and a Group V element, and a shell disposed on the quantum well, the shell including a third semiconductor nanocrystal including a second Group II-VI compound, wherein the quantum dot does not include cadmium, an energy bandgap of the second semiconductor nanocrystal is smaller than an energy bandgap of the first semiconductor nanocrystal and an energy bandgap of the third semiconductor nanocrystal, and an ultraviolet-visible (UV-Vis) absorption spectrum curve of the quantum dot does not have an inflection point within a wavelength range of about 450 nanometers (nm) to about 600 nm, and a quantum dot composite and a device including the same.