Semiconducting particles in electronic elements

1. An electronic element comprising

a) a pixelated organic electroluminescent device 100 comprising a first 101 , a second 102 , and a third 103 light emitting pixel that are identical, and are electronically controlled separately,

b) a first color converter layer 201 disposed in the light output path 151 of the first pixel 101 , wherein the color converter layer 201 comprises at least one light emitting semiconducting nanoparticle acting as first color converter;

c) a first color filter layer 301 disposed in the light output path 251 of the first color converter layer 201 comprising a first color filter,

and wherein the electronic element comprises scattering particles, which are SiO 2 , SnO 2 , CuO, CoO, Al 2 O 3 TiO 2 , Fe 2 O 3 , Y 2 O 3 , ZnO, or MgO particles, or organic particles of polymerized polystyrene or polymerized PMMA, or inorganic hollow oxide particles, or sulfate particles or a combination thereof.

2. The electronic element according to claim 1 , wherein the first color filter layer 301 comprises a red color filter as first color filter and the first color converter layer 201 comprises a red light emitting semiconducting nanoparticle as first color converter.

3. The electronic element according to claim 1 , wherein a second color filter layer 302 comprising a second color filter is disposed in the light output path of the second pixel 102 .

4. The electronic element according to claim 1 , wherein a third color filter layer 303 comprising a third color filter is disposed in the light output path of the third pixel 103 .

5. The electronic element according to claim 1 , wherein the first color filter and the first color converter are located in the same layer as first combined layer 501 .

6. The electronic element according to claim 1 , wherein the element further comprises a fourth pixel 104 .

7. The electronic element according to claim 1 , wherein the pixelated organic electroluminescent device emit white light.

8. The electronic element according to claim 1 , wherein the device comprises in the light output path 152 of the second pixel 102 between the second pixel 102 and the second color filter layer 302 a second color converter layer 202 comprising a second color converter.

9. The electronic element according to claim 8 , wherein the first color converter layer 201 and the second color converter layer 202 are represented by a single common color converter layer 212 being disposed in the light output paths of the first 101 and the second 102 pixel, wherein the common color converter layer 212 comprises a composition of the first color converter and the second color converter.

10. The electronic element according to claim 1 , wherein the organic electroluminescent device emits blue light.

11. The electronic element according to claim 1 , wherein the device comprises a common color filter layer 523 in the light output paths of the second 152 and a third 153 pixel, wherein the common color filter layer comprises a composition of the second and third color filter.

12. The electronic element according to claim 1 , wherein the organic electroluminescent device emits bluish-green light.

13. The electronic element according to claim 1 , wherein the concentration of the light emitting semiconducting nanoparticle in the first, second or third color converter layer is 10 mg/m 2 to 1 g/m 2 .

14. The electronic element according to claim 1 , wherein the light emitting semiconducting nanoparticle(s) is(are) selected from the group consisting of quantum dots, core shell type quantum dots, quantum rods, core shell type quantum rods and combinations thereof.

15. The electronic element according to claim 1 , wherein the light emitting semiconducting nanoparticle(s) is(are) selected from the group consisting of InGaP, CdSe, CdS, CdTe, ZnO, ZnSe, ZnS, ZnTe, HgSe, HgTe, CdZnSe, InP, InN, GaN, InSb, InAsP, InGaAs, GaAs, GaP, GaSb, AlP, AN, AlAs, AlSb, CdSeTe, ZnCdSe, PbSe, PbTe, PbS, PbSnTe, and Tl 2 SnTe 5 and combinations thereof.

16. The electronic element according to claim 1 , wherein the color filters are selected from dyes and pigments.

17. The electronic element according to claim 1 , wherein the device further comprises a planarization layer 150 between the pixelated organic electroluminescent device 100 and the color converter layer(s) or if no color converter layer is present between the pixelated organic electroluminescent device 100 and the color filter layer(s).

18. A color display comprising the electronic element according to claim 1 .

19. The color display according to claim 18 , which comprises a TFT backplane 600 .

20. A method or preparing the electronic element according to claim 1 , wherein the color converter layer comprising the quantum rod, core shell type quantum rod or combination thereof is, at least in part, oriented.

21. An electronic element obtainable according to the method of claim 20 .

22. The electronic element according to claim 1 , wherein the average particle diameter of the scattering particles is 350 nm to 5 μm.

23. The electronic element according to claim 1 , wherein the scattering particles are SiO 2 , SnO 2 , CuO, CoO, Al 2 O 3 TiO 2 , Fe 2 O 3 , Y 2 O 3 , ZnO, or MgO particles, or organic particles of polymerized polystyrene or polymerized PMMA, or hollow silica particles or BaSO 4 particles or a combination thereof.