| abstract |
A luminescent component comprises a first el-ement (1) comprising a first solid polymer composition, wherein the first solid polymer composition comprises first luminescent crystals (11), wherein the first lumi-nescent crystals (11) are of the perovskite structure, and are selected from compounds of formula (I): M 1 a M 2 b X c , wherein M 1 represents Cs, optionally doped with up to 30 mol% of one or more other metals having coordination num-ber 12, M 2 represents Pb, optionally doped with up to 30 mol% of one or more other metals having coordination num-ber 6, X independently represents anions selected from the group consisting of Cl, Br, I, cyanide, and thiocyanate. The first luminescent crystals (11) are of size between 3 nm and 3000 nm, and emit light of a first wavelength in response to excitation by light with a wavelength shorter than the first wavelength. An encapsu-lation (3) encloses the first element (1). The encapsula-tion (3) comprises a polymer or an inorganic matrix. The luminescent component is designed to be used in LCD-backlight, LED-lighting or OLED lighting applications. |