A luminescent component , comprising a solid material composition ; said composition comprising first luminescent crystals embedded in a solid matrix ; said luminescent crystals - emit light of a first wavelength in response to excitation and - are of the perovskite crystal structure of formula (I): [M 1 A 1 ] a M 2 b X c (I), wherein: A 1 represents one or more organic cations, M 1 represents one or more alkaline metals, M 2 represents one or more metals selected from the group of Ge, Sn, Pb, and Bi, preferably Pb. X represents one or more anions selected from the group consisting of halides, pseudohalides and sulfide, a represents 1-4, b represents 1-2, c represents 3-9, and wherein either M 1 , or A 1 , or M 1 and A 1 being present; and said solid matrix comprising - polymer (P1) or small molecules (SM1) as a matrix material; and - a metal M 3 distributed within said matrix material, whereby M 3 is Zn; and - optionally surfactant (S1); and whereby the total molar ratio M 3 :M 2 within said solid material composition is between 0.3:1 and 20:1 as determined by ICP-MS or ICP-OES. said composition comprising first luminescent crystals embedded in a solid matrix ; said luminescent crystals - emit light of a first wavelength in response to excitation and - are of the perovskite crystal structure of formula (I): [M 1 A 1 ] a M 2 b X c (I), wherein: A 1 represents one or more organic cations, M 1 represents one or more alkaline metals, M 2 represents one or more metals selected from the group of Ge, Sn, Pb, and Bi, preferably Pb. X represents one or more anions selected from the group consisting of halides, pseudohalides and sulfide, a represents 1-4, b represents 1-2, c represents 3-9, and wherein either M 1 , or A 1 , or M 1 and A 1 being present; and - emit light of a first wavelength in response to excitation and - are of the perovskite crystal structure of formula (I): [M 1 A 1 ] a M 2 b X c (I), wherein: A 1 represents one or more organic cations, M 1 represents one or more alkaline metals, M 2 represents one or more metals selected from the group of Ge, Sn, Pb, and Bi, preferably Pb. X represents one or more anions selected from the group consisting of halides, pseudohalides and sulfide, a represents 1-4, b represents 1-2, c represents 3-9, and wherein either M 1 , or A 1 , or M 1 and A 1 being present; and A 1 represents one or more organic cations, M 1 represents one or more alkaline metals, M 2 represents one or more metals selected from the group of Ge, Sn, Pb, and Bi, preferably Pb. X represents one or more anions selected from the group consisting of halides, pseudohalides and sulfide, a represents 1-4, b represents 1-2, c represents 3-9, and said solid matrix comprising - polymer (P1) or small molecules (SM1) as a matrix material; and - a metal M 3 distributed within said matrix material, whereby M 3 is Zn; and - optionally surfactant (S1); and - polymer (P1) or small molecules (SM1) as a matrix material; and - a metal M 3 distributed within said matrix material, whereby M 3 is Zn; and - optionally surfactant (S1); and whereby the total molar ratio M 3 :M 2 within said solid material composition is between 0.3:1 and 20:1 as determined by ICP-MS or ICP-OES. <EOS>