COMPOSITION

1 .- 15 . (canceled)

16 . A layer comprising at least a matrix material and one or more light emitting moieties, wherein the distribution of the light emitting moiety in the layer is not identical in the direction of layer thickness.

17 . A layer containing at least a matrix material and one or more emitting moieties, contains a 1 st phase and a 2 nd phase, wherein said 1 st phase and said 2 nd phase are different of each other and said 1 st phase has a plurality of aggregates of said light emitting moieties and higher concentration of the light emitting moieties per unit volume in the 1 st phase than in the 2 nd phase.

18 . A layer containing at least a matrix material and one or more emitting moieties, wherein 30 wt. % or more of the light emitting moieties based on the total amount of the light emitting moieties in the layer are concentrated in an area of the layer, wherein said area has the thickness within 25% of the thickness of the layer.

19 . A layer containing at least a matrix material and one or more emitting moieties, wherein 41 wt. % or more of the light emitting moieties based on the total amount of the light emitting moieties in the layer are concentrated in the area of the layer, wherein said area has the thickness within 40% of the layer thickness of the layer.

20 . The layer of claim 16 , wherein the layer thickness of the layer is in the range from 1 to 50 um.

21 . The layer of claim 16 , shows the EQE value 25% or more and less than 50%.

22 . The layer of claim 16 , is made from a composition, preferably from a photocurable composition, comprising at least;

i) a reactive monomer;

ii) a light emitting moiety; and optionally

iii) a chemical compound comprising at least one end group selected from one or more of members of the group consisting of phosphine group, phosphine oxide group, phosphate group, phosphonate group, thiol group, tertiary amine group, primary amine group, carboxyl group, hetero cyclic group, silane group, sulfonic acid group, hydroxyl group, phosphonic acid group.

23 . The layer of claim 22 , wherein the reactive monomer of the composition is a (meth)acrylate monomer selected from a mono-(meth)acrylate monomer, a di-(meth)acrylate monomer or a tri-(meth)acrylate monomer.

24 . The layer of claim 22 , wherein the composition further comprises a (meth)acrylate monomer represented by following chemical formula (I) and/or a (meth)acrylate monomer represented by following chemical formula (III);

wherein

X 1 is a non-substituted or substituted alkyl group, aryl group or an alkoxy group or an ester group;

X 2 is a non-substituted or substituted alkyl group, aryl group or an alkoxy group or an ester group;

R 1 is a hydrogen atom, halogen atom of Cl, Br, or F, methyl group, alkyl group, aryl group, alkoxy group, ester group, or a carboxylic acid group;

R 2 is a hydrogen atom, halogen atom of Cl, Br, or F, methyl group, alkyl group, aryl group, alkoxy group, ester group, or a carboxylic acid group;

wherein

R 9 is hydrogen atom, a straight alkyl group having 1 to 25 carbon atoms or a (meth)acryl group represented by chemical formula (IV)

R 10 is hydrogen atom, a straight alkyl group having 1 to 25 carbon atoms or a (meth)acryl group represented by chemical formula (V)

R 11 is hydrogen atom, a straight alkyl group having 1 to 25 carbon atoms or a (meth)acryl group represented by chemical formula (VI)

 wherein

R 8 , R 8a , R 8b and R 8c are, each independently or dependently of each other at each occurrence, H, CH 2 CH 3 or CH 3 ;

wherein at least one of R 9 , R 10 and R 11 is a (meth)acryl group, preferably two of R 9 , R 10 and R 11 are a (meth)acryl group and other one is a hydrogen atom or a straight alkyl group having 1 to 25 carbon atoms.

25 . The layer of claim 16 , comprising another material selected from one or more members of the group consisting of;

another light emitting moiety which is different from the light emitting moiety of claim 16 , scattering particles, transparent polymers, anti-oxidants, radical quenchers, photo initiators and surfactants.

26 . A process of fabricating the layer of claim 16 , wherein the process comprises at least the following steps;

I) providing a composition preferably from a photocurable composition, comprising at least;

i) a reactive monomer;

ii) a light emitting moiety; and optionally

iii) a chemical compound comprising at least one end group selected from one or more of members of the group consisting of phosphine group, phosphine oxide group, phosphate group, phosphonate group, thiol group, tertiary amine group, primary amine group, carboxyl group, hetero cyclic group, silane group, sulfonic acid group, hydroxyl group, phosphonic acid group, onto a substrate,

II) curing the composition.

27 . A layer obtained by the process of claim 26 .

28 . A multiple layer containing at least the layer of claim 16 and one another layer directly attached onto the layer.

29 . A color conversion device comprising at least xi) a pixel partly or fully filled with the layer of claim 16 , optionally one or more of another layers placed under and/or above the layer in the pixel; and

xii) a bank comprising at least a polymer material.

30 . An optical device containing at least one functional medium configured to modulate a light or configured to emit light, and the color conversion device of claim 29 .