A quantum-dot (QD) light-emitting diode (QLED) device has a multiple-layer active emission region. The multiple-layer active emission region has n QD layers interleaved with (n1) quantum-barrier (QB) layers where n is a positive integer greater than one, such that each QB layer is sandwiched between two adjacent QD layers.

A method for preparing a fluorescent polarizing film based on directional arrangement of quantum rods. In the method, an inkjet printing technology is used for printing quantum-rod ink having proper viscosity and surface tension on a substrate according to a preset pattern, and directionally arranging quantum rods to obtain a fluorescent polarizing film. The diameter and spacing of fluorescent lines obtained by the method can be controlled and adjusted according to parameter conditions such as a needle aperture, a printing speed, and a preset pattern. The prepared transparent fluorescent film with directionally arranged quantum rods has a high degree of polarization, can be prepared on a flexible substrate in a normal temperature environment, and has wide applicability.

The purpose of the present invention to provide semiconductor nanoparticles substantially containing no Cd, and which have an increased absorption coefficient to blue light while maintaining high stability. Semiconductor nanoparticles having a core containing at least In and P, and a shell having one or more layers, wherein at least one layer of the shell is ZnSeTe (wherein Te/(Se+Te)=0.03 to 0.50); and the semiconductor nanoparticles cause, when the semiconductor nanoparticles are dispersed in a dispersion medium to yield a dispersion liquid with a concentration of 1 mg/mL in inorganic mass, the dispersion liquid to have an absorbance of 0.9 or higher with respect to light having a wavelength of 450 nm at an optical path length of 1 cm.

A device including an LED light source optically coupled to a phosphor material including a green-emitting phosphor selected from the group consisting of compositions of (A1)-(A70), and combinations thereof.

A composition including a plurality of quantum dots; a binder polymer; a thiol compound having at least two thiol groups; a polyvalent metal compound; a polymerizable monomer having a carbon-carbon double bond; a photoinitiator; and a solvent.

The method for preparing water-dispersible core-shell quantum dots stabilized with a layer of hydrophilic surface ligands includes making a core of PbS nanocrystals, and obtaining the shell of CdS layer and the surface ligands of dithiocarbamates obtained by reacting amino acids with carbon disulphide, while maintaining the photoluminescence. The emulsion formed of an aqueous solution of amino acid and carbon disulphide includes adding a solution of PbS/CdS in chloroform (CHCl.sub.3). Then, the contents are stirred vigorously for at least 20 hours, then the phases are separated. The upper, aqueous phase, being a solution of PbS/CdS/DTC-amino acid residue, is subjected to purification. The present invention is also colloid and a method for preparing colloid.

A nanocomposite includes: a matrix phase; and a functional area disposed in the matrix phase. The functional area contains monocrystal fine particles.

Provided are articles having a cellular structure and also having improved aging performance under certain types of illumination. Also provided are methods of utilizing the disclosed articles.

Embodiments relate to a quantum rod composition, a quantum rod film, a display device with a quantum rod film, and a method of forming a quantum rod film. The quantum rod film includes a plurality of quantum rods and a polymer with a dipole side chain. Responsive to an external electric field, the major axis of the quantum rods and an axis of the dipole side chain arranges in the same direction. The display device includes a plurality of pixel and common electrodes for generating an electric field, and a backlight unit positioned under a first substrate. Responsive to receiving light from the backlight unit, the quantum rod film emits light polarized in a direction parallel to the major axis of the quantum rods.

According to one embodiment, a product is a mixture including a solvent and generally spherical colloidal nanoparticles, the colloidal nanoparticles each having a core and a shell surrounding the core, and an electrode. In addition, the mixture is characterized as having a transparency to light in a predetermined wavelength range, where the transparency increases as a voltage of the electrode increases.