OPTICAL COMPOSITION Russian patent published in 2018 - IPC G02B1/04 G02B1/02 B82Y20/00 B82Y40/00 

FIELD: optics.

SUBSTANCE: invention relates to optical compositions and a method for their preparation for light-emitting devices. Optical composition contains a transparent matrix containing organic anionic fragments and metal cations distributed in the matrix. Organic anionic fragments and metal cations form an organometallic complex, wherein the metal cations are capable of forming transparent nanocrystals upon contact with an agent containing at least one element from the group consisting of sulfur and selenium. Also an optical composition comprising a transparent matrix comprising an organic moiety residue, and unmodified nanocrystals is disclosed. Method of preparing an optical composition comprising the steps of providing a transparent matrix, comprising anionic organic moieties; dispersing metal cations into the matrix; contacting the organometallic complex with an agent in order to in situ convert at least part of the metal cations into transparent nanocrystals directly in the matrix.

EFFECT: invention makes it possible to increase the refractive index and to reduce the excess scattering in the light emitting devices.

15 cl, 5 dwg, 2 ex