A semiconducting light emitting nanoparticle, comprising a core; an outer layer covering at least a part of said core, comprising a metal cation and a divalent anion; and one or more types of organic moieties directly attached to the anion of the outer layer by covalent bond, wherein said divalent anion is selected from Se 2-, S 2-, Te 2- O 2- or a combination of any of these, preferably said metal cation is a monovalent, divalent cation, trivalent or tetravalent cation, more preferably said metal cation is a divalent cation selected from the group consisting of Zn 2+, Ni 2+, Co 2+, Ca 2+, Sr 2+, Hg 2+, Mg 2+ and Pb 2+, or a tetravalent cation selected from the group consisting of Ti 4+, Ge 4+, Si 4+, Zr 4+, Hf 4+, and Sn 4+ wherein the organic moiety is represented by following chemical formula or (III'); *-(CH 2) a -(OCH 2 CH 2) p - r -(CH 2) q -Z *-(CH 2)q- r -(OCH 2 CH 2)p-Z (IIIa) wherein V is O, CH 2 or C=O; Z is a hydrogen atom or an organic group, preferably Z is a hydrogen atom, a straight alkyl group having 1 to 25 carbon atoms, a branched alkyl group having 3 to 25 carbon atoms, -COOH, -SH, or -NH 2, alkylamine, fluoroaryl, fluoroalkaryl, fluoroalkyl or fluoroaralkyl, preferably Z is a hydrogen atom, a straight alkyl group having 1 to 25 carbon atoms, a branched alkyl group having 3 to 25 carbon atoms, more preferably it is a hydrogen atom, a straight alkyl group having 1-15 carbon atoms, a branched alkyl group having 3-15 carbon atoms, even more preferably it is a hydrogen atom, or a straight alkyl group having 1-10 carbon atoms; a is 0 or an integer 1 or more, preferably 0≤a≤25, more preferably 0≤a≤15, even more preferably 1≤a≤10; p is an integer 1 or more, preferably 1≤p≤45, more preferably 1≤p≤25, even more preferably 1≤p≤20, furthermore preferably 4≤p≤18; q is 0 or an integer 1 or more, preferably 0≤q≤25, more preferably 0≤q≤15, even more preferably 0≤q≤10, furthermore preferably it is 1≤q≤5; r is 0 or an integer 1; "*" represents the connecting point to the anion in the outer layer. an outer layer covering at least a part of said core, comprising a metal cation and a divalent anion; and one or more types of organic moieties directly attached to the anion of the outer layer by covalent bond, wherein said divalent anion is selected from Se 2-, S 2-, Te 2- O 2- or a combination of any of these, preferably said metal cation is a monovalent, divalent cation, trivalent or tetravalent cation, more preferably said metal cation is a divalent cation selected from the group consisting of Zn 2+, Ni 2+, Co 2+, Ca 2+, Sr 2+, Hg 2+, Mg 2+ and Pb 2+, or a tetravalent cation selected from the group consisting of Ti 4+, Ge 4+, Si 4+, Zr 4+, Hf 4+, and Sn 4+ wherein the organic moiety is represented by following chemical formula or (III'); *-(CH 2) a -(OCH 2 CH 2) p - r -(CH 2) q -Z *-(CH 2)q- r -(OCH 2 CH 2)p-Z (IIIa) wherein V is O, CH 2 or C=O; Z is a hydrogen atom or an organic group, preferably Z is a hydrogen atom, a straight alkyl group having 1 to 25 carbon atoms, a branched alkyl group having 3 to 25 carbon atoms, -COOH, -SH, or -NH 2, alkylamine, fluoroaryl, fluoroalkaryl, fluoroalkyl or fluoroaralkyl, preferably Z is a hydrogen atom, a straight alkyl group having 1 to 25 carbon atoms, a branched alkyl group having 3 to 25 carbon atoms, more preferably it is a hydrogen atom, a straight alkyl group having 1-15 carbon atoms, a branched alkyl group having 3-15 carbon atoms, even more preferably it is a hydrogen atom, or a straight alkyl group having 1-10 carbon atoms; a is 0 or an integer 1 or more, preferably 0≤a≤25, more preferably 0≤a≤15, even more preferably 1≤a≤10; p is an integer 1 or more, preferably 1≤p≤45, more preferably 1≤p≤25, even more preferably 1≤p≤20, furthermore preferably 4≤p≤18; q is 0 or an integer 1 or more, preferably 0≤q≤25, more preferably 0≤q≤15, even more preferably 0≤q≤10, furthermore preferably it is 1≤q≤5; r is 0 or an integer 1; "*" represents the connecting point to the anion in the outer layer. V is O, CH 2 or C=O; Z is a hydrogen atom or an organic group, preferably Z is a hydrogen atom, a straight alkyl group having 1 to 25 carbon atoms, a branched alkyl group having 3 to 25 carbon atoms, -COOH, -SH, or -NH 2, alkylamine, fluoroaryl, fluoroalkaryl, fluoroalkyl or fluoroaralkyl, preferably Z is a hydrogen atom, a straight alkyl group having 1 to 25 carbon atoms, a branched alkyl group having 3 to 25 carbon atoms, more preferably it is a hydrogen atom, a straight alkyl group having 1-15 carbon atoms, a branched alkyl group having 3-15 carbon atoms, even more preferably it is a hydrogen atom, or a straight alkyl group having 1-10 carbon atoms; a is 0 or an integer 1 or more, preferably 0≤a≤25, more preferably 0≤a≤15, even more preferably 1≤a≤10; p is an integer 1 or more, preferably 1≤p≤45, more preferably 1≤p≤25, even more preferably 1≤p≤20, furthermore preferably 4≤p≤18; q is 0 or an integer 1 or more, preferably 0≤q≤25, more preferably 0≤q≤15, even more preferably 0≤q≤10, furthermore preferably it is 1≤q≤5; r is 0 or an integer 1; "*" represents the connecting point to the anion in the outer layer.