Semiconducting light emitting material

1. A semiconductor nano-sized light emitting material comprising of a core, optionally one or more shell layers and a ligand coated onto the core or the outermost surface of the shell layers,

wherein the ligand is

2. The material according to claim 1 , wherein said core is formed from one, two or more compounds according to formula (IV),

[A 1 B 1 ]  (IV)

in which

[A 1 ] stands for a metal selected from the group consisting of zinc, cadmium, indium or their mixtures;

[B 1 ] stands for a non-metal selected from the group consisting of sulphur, selenium, phosphorous and their mixtures.

3. The material of claim 2 , wherein [A 1 B 1 ] stands for one, two or more compounds selected from the group consisting of CdS, CdSe, CdSeS, CdZnS, ZnS, ZnSe, ZnSeS, and InP.

4. The material according to claim 1 , wherein said shell or said shells are formed from one, two or more compounds according to formula (V),

[A 2 B 2 ]  (V)

in which

[A 2 ] stands for a metal selected from the group consisting of zinc, cadmium or their mixtures;

[B 2 ] stands for a non-metal selected from the group consisting of sulphur, selenium, tellurium and their mixtures.

5. The material of claim 4 , wherein [A 2 B 2 ] stands for one, two or more compounds selected from the group consisting of CdS, CdSe, CdSeS, CdZnS, ZnS, ZnSe and ZnSeS, ZnSeSTe.

6. A composition comprising at least one semiconductor nano-sized light emitting material according to claim 1 , and at least one matrix material.

7. A formulation comprising at least one semiconductor nano-sized light emitting material according to claim 1 , and at least one solvent.

8. An electronic device, optical device or a biomedical device comprising in said device semiconductor nano-sized light emitting material according to claim 1 .

9. An optical medium comprising in said medium the semiconductor nano-sized light emitting material according to claim 1 .

10. An optical device comprising said optical medium according to claim 9 .