Provided are light-emitting particles having high stability while having perovskite-type semiconductor nanocrystals having excellent light-emitting properties, a method for producing the same, and a light-emitting particle dispersion, an ink composition, and a light-emitting element containing such light-emitting particles. The method for producing light-emitting particles of the present invention includes a step of preparing parent particles 91 each having hollow particles 912 each having an inner space 912a and pores 912b communicating with the inner space 912a, and perovskite-type semiconductor nanocrystals 911 contained in the inner space 912a and having light-emitting properties, and a step of coating the surface of each parent particle 91 with a hydrophobic polymer to form a polymer layer 92.

A white LED including red phosphor, at least one blue LED chip and at least one green LED chip, wherein a red light, a blue light and a green light are mixed simultaneously to produce a white light. The red phosphor comprises a first red phosphor and a second red phosphor. The first red phosphor is made from a substance having structure formula M.sub.2AX.sub.6:Mn.sup.4+, wherein the element M is selected from Li, Na, K, Rb or Cs, the element A is selected from Ti, Si, Ge or Zr, and the element X is selected from F, Cl or Br; the ratio of the second red phosphor to the red phosphor ranges from 0.01% to 15%. Further provided is a backlight module. The adjustably colored points of a device comprising M.sub.2AX.sub.6:Mn.sup.4+ are achieved by adding a second red phosphor to the red phosphor comprising M.sub.2AX.sub.6:Mn.sup.4+.

The invention provides a process for producing a passivated semiconductor, which process comprises treating a semiconductor with a passivating agent, wherein: the semiconductor comprises a crystalline compound comprising: (i) one or more first cations (A); (ii) one or more metal cations (M); and (iii) one or more anions (X); and the passivating agent comprises a compound comprising an oxygen-oxygen single bond. A composition and the use of a passivating agent are also provided.

The present invention relates to a method for producing core-shell nanocrystals consisting of a metal-containing nanocrystal core and a shell layer comprising at least one metal oxide material having variable shell thicknesses, and use of the core-shell nanocrystals for different applications.

Disclosed is a perovskite light-emitting device with reduced defects in a perovskite thin film. The passivation layer in the perovskite light-emitting device is formed on the upper part of the perovskite thin film to eliminate defects in the perovskite nanocrystalline particles and resolve charge imbalance in the device, thereby improving maximum efficiency and maximum luminance of the light-emitting device.

The invention relates to a method for the preparation of luminescent nanocomposites comprising metal halide nanocrystals co-embedded with inorganic salts in the pores of a porous metal oxide matrix comprising the steps of: a) preparing a mixture comprising at least a metal halide, a combination of inorganic salts, and porous metal oxide particles in the absence of an organic solvent; b) heating above the melting temperature of the mixture of step a); c) cooling to obtain the nanocomposite. It further relates to nanocomposites obtained with the claimed method and optoelectronic devices, tracers and tagging material comprising the same.

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.

A light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an activation layer located between the first electrode and the second electrode and includes an emission layer and an auxiliary layer, wherein the auxiliary layer is located between the first electrode and the emission layer and includes a block copolymer, the block copolymer includes at least one hydrophilic block and at least one hydrophobic block, and the emission layer includes a perovskite structure.

A modified perovskite quantum dot material, a fabricating method thereof, and a display device are provided. Hydroxyl-modified perovskite quantum dots are obtained by adding an excess amount of hydroxyl-containing surface ligands to a solution of synthesized perovskite quantum dots. After high-speed centrifugation, the obtained perovskite quantum dots are redispersed into a non-polar alkyl solvent to form a solution. Further, an excess amount of ethyl orthosilicate is added to the solution, and after exposing the solution for a long period of time, the ethyl orthosilicate is hydrolyzed to form a triethoxysilane group. After centrifugation, modified perovskite quantum dots wrapped by the triethoxysilane groups are obtained, which effectively improves stability of the perovskite quantum dots.

The present disclosure pertains to a color filter for a display device, which has at least one color filter element for generating a predefined color in response to incident light, wherein the at least one color filter element includes a Perovskite material.