The present invention provides shortwave infrared ray emitting nanoparticles including a core having band gap energy of E.sub.1; an intermediate layer that is formed on the core and has band gap energy of E.sub.2; and an outer layer that is formed on the intermediate layer and has band gap energy of E.sub.3, in which the size of the E.sub.2 is smaller than the size of the E1 and the size of the E.sub.3. According to the present invention, it is possible to provide a solar cell which is improved in efficiency and life span and can be produced by a solution process.

Ligand-capped inorganic particles, films composed of the ligand-capped inorganic particles, and methods of patterning the films are provided. Also provided are electronic, photonic, and optoelectronic devices that incorporate the films. The ligands that are bound to the inorganic particles are composed of a cation/anion pair. The anion of the pair is bound to the surface of the particle and at least one of the anion and the cation is photosensitive.

Quantum dot layers and display devices including quantum dot layers are described. In an embodiment the quantum dot layer includes quantum dots with coatings to adjust the spacing between adjacent quantum dots. In an embodiment, the coatings are metal oxide coatings and may create a charge transporting matrix. In an embodiment, the coatings are core-material coatings. The QD layers may be QD-LED compatible.

A magnetic, thermosensitive, fluorescent micelle includes a core, a carrier wrapping the core, and a plurality of water-soluble near-infrared CdHgTe quantum dots (QD) disposed on the carrier. The core includes dextran-magnetic layered double hydroxide-fluorouracil (DMF). The carrier includes a tripolymer of poly(N-isopropylacrylamide-co-N,N-dimethylacrylamide)-b-polylactic acid (PLA). N-isopropylacrylamide-co-N,N-dimethylacrylamide of the tripolymer includes a hydrophilic group and a hydrophobic carbon frame. The hydrophilic group is oriented outwards with respect to the and forms a shell. The hydrophobic carbon frame and polylactic acid are restrained to wrap the dextran-magnetic layered double hydroxide-fluorouracil to form the core.

A light emitting film including a plurality of quantum dots and an electronic device including the same. The plurality of quantum dots constitute at least a portion of a surface of the light emitting film, the plurality of quantum dots do not include cadmium, and the at least a portion of a surface of the light emitting film includes a metal halide bound to at least one quantum dot of the plurality of quantum dots.

A method of producing nanoparticles comprises effecting conversion of a molecular cluster compound to the material of the nanoparticles. The molecular cluster compound comprises a first ion and a second ion to be incorporated into the growing nanoparticles. The conversion can be effected in the presence of a second molecular cluster compound comprising a third ion and a fourth ion to be incorporated into the growing nanoparticles, under conditions permitting seeding and growth of the nanoparticles via consumption of a first molecular cluster compound.

The present disclosure relates to a manufacturing method of a quantum dot layer, a quantum dot color filter, a color filter substrate, a display panel, and a display device. The manufacturing method includes: performing lyophobic treatment on a first specified region of a first transparent layer, the first transparent layer including regions corresponding to a plurality of pixel regions, each pixel region of the plurality of pixel regions comprising a first subpixel region and a region other than the first subpixel region, the first specified region corresponding to the region other than the first subpixel region; and preparing a lyophilic first quantum dot solution on the first transparent layer to form a first quantum dot sublayer in a region that corresponds to the first subpixel region and is not subjected to the lyophobic.

Photodetectors based on colloidal quantum dots and methods of making the photodetectors are provided. Also provided are methods for doping films of colloidal quantum dots via a solid-state cation exchange method. The photodetectors include multi-band photodetectors composed of two or more rectifying photodiodes stacked in aback-to-back configuration. The doping methods rely on a solid-state cation exchange that employs sacrificial semiconductor nanoparticles as a dopant source for a film of colloidal quantum dots.

The present disclosure relates to the field of preparation of compound semiconductor nanomaterials, and in particular to a method for in-situ modification of mercury quantum dots in a traditional thermal injection process. It is characterized in that, in the traditional thermal injection process for synthesis of HgTe quantum dots, after a certain reaction time, a low boiling point polar solvent that is incompatible with a reaction solvent is rapidly injected, so that an interfacial separation of two liquid phases occurs in a mixed reaction, and then a selective crystal oriented surface modification is conducted on surfaces of mercury quantum dots.

The present discloser relates to an infrared device using intra-band electron transition of non-stoichiometric quantum dots and, more specifically, to non-stoichiometric quantum dot nanoparticles and an infrared device comprising the nanoparticles, in which the nanoparticles comprise quantum dot cores and nonthiol ligands bonded to the core and emits infrared rays from electron transition between discrete energy levels in the band. The infrared device has an effect of emitting infrared rays, particularly, mid-infrared rays or far-infrared rays, by using the electron transition between discrete energy levels in the band of quantum dots in which the proportion of a metal is higher than that of a chalcogen. In addition, the quantum dots are prepared by containing nonthiol ligands, and thus, compared with a conventional thiol ligand, ligand substitution is very easy while the n-type doping of quantum dots is maintained.