LUMINESCENT CRYSTALS AND MANUFACTURING THEREOF

    公开(公告)号:US20220195295A1

    公开(公告)日:2022-06-23

    申请号:US17669133

    申请日:2022-02-10

    申请人: Avantama AG

    摘要: The present invention relates to the field of luminescent crystals (LCs), and more specifically to Quantum Dots (QDs) of formula M1aM2bXc, wherein the substituents are as defined in the specification. The invention provides methods of manufacturing such luminescent crystals, particularly by dispersing suitable starting materials in the presence of a liquid and by the aid of milling balls; to compositions comprising luminescent crystals and to electronic devices, decorative coatings; and to intermediates comprising luminescent crystals.

    STABILIZED PEROVSKITE QUANTUM DOT MATERIAL

    公开(公告)号:US20220064524A1

    公开(公告)日:2022-03-03

    申请号:US17463298

    申请日:2021-08-31

    摘要: Described herein are materials comprising (1) a monomer or a polymer; (2) perovskite quantum dots interspersed in the monomer or the polymer, each of the perovskite quantum dots independently having the formula: Csa(MA)b(FA)cRbdPbpSnrBisClxBryIz, wherein: MA is CH3NH3; FA is HC(NH2)2; a, b, c, and d are each independently a number from 0 to 1, provided that the sum of a, b, c, and d is 1; p, r, and s are each independently a number from 0 to 1, provided that the sum of p, r, and s is 1; and x, y, and z are each independently a number from 0 to 3, provided that the sum of x, y, and z is 3; and (3) an additive interspersed in the monomer or the polymer, the additive comprising: a halide-based additive; a light scattering agent having the formula: M2O3, wherein M is, at each occurrence, independently, a metal, provided that at most one instance of M is a group 13 element; or both. Also described are devices comprising such materials, as well as methods of forming such materials.