Coated substrate and method of making same
View Patent ↗Provided are containment structures having a substrate structure having a plurality of walls extending from a surface to define a space, wherein at least one of the walls has an overall negative slope; a first layer deposited in the space having a first surface energy no greater than 30 mN/m; and a second layer deposited on top of the first layer.
1. An electronic device comprising:
a containment structure having a plurality of walls, wherein at least one of the walls has an overall negative slope;
wherein the containment structure having said plurality of walls extends from a surface of a substrate to define a space;
a first layer deposited in the space having a first surface energy no greater than 30 mN/m; and
a second layer deposited on top of the first layer.
2. The electronic device of claim 1 , wherein the first layer has a surface energy of no greater than 25 mN/m.
3. The electronic device of claim 1 , wherein the first layer has a surface energy of no greater than 20 mN/m.
4. The electronic device of claim 1 , wherein the second layer comprises a polymer.
5. The electronic device of claim 1 , wherein the first layer comprises a fluorinated or sulfonated polymer.
6. The electronic device of claim 5 , wherein the first layer comprises a fluorinated polymer.
7. The electronic device of claim 1 , wherein the wall has an initial slope along the wall at the bottom of the space, wherein the initial slope is more vertical compared to the overall slope.
8. The electronic device of claim 1 , further comprising an organic active layer over the second layer.
9. The electronic device of claim 8 , wherein the substrate structure has a third surface energy along a wall, wherein the third surface energy is greater than the first surface energy and less than the second surface energy.
10. An article useful in the manufacture of an electronic device of claim 1 .
11. The article of claim 10 , wherein the first layer of the containment structure comprises a fluorinated or sulfonated polymer.
12. A method for forming an electronic device comprising:
providing a substrate structure having a plurality of walls extending from a surface to define a space, wherein at least one of the walls has an overall negative slope;
forming a first layer within the space, wherein the first layer has a first surface energy no greater than 30 mN/m;
depositing a liquid composition on the first layer and within the space, wherein a liquid medium within the liquid composition has a second surface energy that is greater than the first surface energy; and
evaporating a substantial portion of the liquid medium to form a second layer.
13. The method of claim 12 where essentially all of the liquid medium is evaporated.
14. The method of claim 12 , wherein the first layer has a first surface energy of no greater than 20 mN/m.
15. The method of claim 12 , further comprising forming an organic active layer over the second layer.
16. The method of claim 12 , wherein the second layer comprises a polymer.
17. The method of claim 12 , wherein the first layer comprises a fluorinated or sulfonated polymer.
18. The method of claim 12 , wherein the surface energy of the second layer is at least 15 mN/m greater than the surface energy of the first layer.
19. The containment structure of claim 1 , wherein the substrate structure has a second surface energy along a wall that is greater than the first surface energy.