Luminescent component

A luminescent component, comprising a first element and a second element, wherein:

• said first element comprises a first solid polymer composition, said first polymer composition comprising first luminescent crystals embedded in a first polymer (P1), wherein
• said first luminescent crystals are of the perovskite crystal structure and emit light of a first wavelength in response to excitation by light with a wavelength shorter than the first wavelength,
• said first polymer (P1) is selected from the group consisting of crosslinked polymers;
• said second element comprises a second solid polymer composition, said second polymer composition optionally comprising second luminescent crystals embedded in a second polymer (P2), wherein
• said optional second luminescent crystals are different from said first luminescent crystals and emit light of a second wavelength in response to excitation by light with a wavelength shorter than the second wavelength,
• said second polymer (P2) is selected from the group of crosslinked polymers;
• and wherein
• said second element at least partially covers and thereby seals said first element;
• and
• wherein P1 and P2 differ;
• and
• wherein said first and second element remain as distinct phases with one or more phase boundaries within the luminescent component.