The present application discloses a composite and its preparation method and application. The composite includes silica-coated quantum dots and graphene nanosheets on the surface of the silica-coated quantum dots; wherein the silica-coated quantum dots include quantum dots and silica layer coated on the surface of the quantum dots. And the graphene nanosheets and the silica layer is bonded by (O—).sub.3Si—R.sub.1—NHCO—R.sub.3—CONH—R.sub.2—Si(O—).sub.3 or (O—).sub.3Si—R.sub.4—SCH.sub.2CH.sub.2—R.sub.5—Si(O—).sub.3, R.sub.1, R.sub.2, R.sub.4, R.sub.5 are respectively selected from a group consisting of a hydrocarbyl or a hydrocarbyl derivative, R.sub.3 is selected from a hydrocarbyl, a hydrocarbyl derivative, an aryl or an aryl derivative. The composite can further improve the stability of quantum dots without affecting the inherent optical properties of quantum dots, thereby improving luminous efficiency.

Disclosed are a semiconductor nanocrystal particle including indium (In), zinc (Zn), and phosphorus (P), wherein a mole ratio of the zinc relative to the indium is greater than or equal to about 25:1, and the semiconductor nanocrystal particle includes a core including a first semiconductor material including indium, zinc, and phosphorus and a shell disposed on the core and including a second semiconductor material including zinc and sulfur, a method of producing the same, and an electronic device including the same. The semiconductor nanocrystal particle emits blue light having a maximum peak emission at a wavelength of less than or equal to about 470 nanometers.

A light-emitting element includes: an anode electrode configured to supply holes; a cathode electrode configured to supply electrons; and a light-emitting layer disposed between the anode electrode and the cathode electrode. The light-emitting layer includes a plurality of quantum dot phosphors configured to emit light in conjunction with combining of holes supplied from the anode electrode and electrons supplied from the cathode electrode and a p-type dopant.

The present disclosure relates to a laminated structure comprising a film comprising a light-emitting perovskite compound, a first substrate, and a second substrate, in which the film is positioned between the first substrate and the second substrate.

Multi-phase polymer films containing quantum dots (QDs) are described herein. The films have domains of primarily hydrophobic polymer and domains of primarily hydrophilic polymer. QDs, being generally more stable within a hydrophobic matrix, are dispersed primarily within the hydrophobic domains of the films. The hydrophilic domains tend to be effective at excluding oxygen.

A quantum dot including a nanoparticle template including a first semiconductor nanocrystal including a Group II-VI compound, a quantum well including a second semiconductor nanocrystal disposed on the nanoparticle template, the second semiconductor nanocrystal including a Group IIIA metal excluding aluminum and a Group V element; and a shell comprising a third semiconductor nanocrystal disposed on the quantum well, the third semiconductor nanocrystal including a Group II-VI compound, wherein the quantum dot does not include cadmium, a band gap energy of the second semiconductor nanocrystal is less than a band gap energy of the first semiconductor nanocrystal, the band gap energy of the second semiconductor nanocrystal is less than a band gap energy of the third semiconductor nanocrystal, and the quantum dot includes an additional metal including an alkali metal, an alkaline earth metal, aluminum, iron, cobalt, nickel, copper, zinc, or a combination thereof.

Quantum dots and electroluminescent device including the same. The quantum dots include an alloy core including a first semiconductor nanocrystal including indium (In), gallium (Ga), and phosphorous (P), and a semiconductor nanocrystal shell disposed on the alloy core, wherein the quantum dots do not include cadmium, wherein the quantum dots are configured to emit blue light having a maximum emission peak wavelength that is greater than or equal to about 440 nanometers (nm) and less than or equal to about 490 nm, wherein in the quantum dots, a mole ratio of gallium with respect to a sum of indium and gallium is greater than or equal to about 0.2:1 and less than or equal to about 0.75:1, and wherein the semiconductor nanocrystal shell includes a zinc chalcogenide.

Embodiments of a display device are described. The display device includes a backlight unit having a light source, a quantum dot film, and a radiation absorbing element. The quantum dot film is optically coupled to the light source and is configured to process light received from the light source. The radiation absorbing element is optically coupled to the quantum dot film and is configured to tune a spectral emission width of the processed light received from the quantum dot film to achieve over 90% color gamut coverage of a standard RGB color space.

A cadmium-free, core shell quantum dot, a quantum dot polymer composite, and electronic devices including the quantum dot polymer composite. The core shell quantum dot has an extinction coefficient per gram of greater than or equal to 0.3, an ultraviolet-visible absorption spectrum curve that has a positive differential coefficient value at 450 nm, wherein the core shell quantum dot includes a semiconductor nanocrystal core including indium and phosphorus, and optionally zinc, and a semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core, the shell including zinc, selenium, and sulfur, wherein the core shell quantum dot has a quantum efficiency of greater than or equal to about 80%, and is configured to emit green light upon excitation.

Quantum dots including semiconductor nanocrystals, methods of producing the same, and quantum dot solutions and electronic devices including the same. The quantum dots do not include cadmium, lead, or a combination thereof. The quantum dots include an organic ligand and a halogen on the surfaces, and the quantum dots are dispersible in an organic solvent to form organic solutions.