Organic electro-luminescent device having polymer emission layer
View Patent ↗An organic electro-luminescent device and a method for fabricating the same are disclosed in the present invention. The electro-luminescent device includes first and second electrodes over a substrate, and an organic emission layer between first and second electrodes, wherein the organic emission layer has a blended structure of a block copolymer and an organic emission material. The fabricating method includes forming a first electrode on a substrate, forming an organic emission layer over the first electrode, wherein the organic emission layer has a blended structure of a block copolymer and an organic emission material, and forming a second electrode over the organic emission layer.
1. An organic electro-luminescent device, comprising:
first and second electrodes over a substrate; and
an organic emission layer between the first and second electrodes, wherein the organic emission layer has a blended structure, the blended structure including a block copolymer and an organic emission material, wherein the organic emission material is a polymer emission material.
2. The organic electro-luminescent device of claim 1 , wherein the block copolymer is formed by anionic polymerization and has at least two monomers.
3. The organic electro-luminescent device of claim 2 , wherein the at least two monomers include polystyrene and polybutadiene.
4. The organic electro-luminescent device of claim 2 , wherein the block copolymer has a periodic structure of one of a lamella structure, a cylindrical structure, and a spherical structure.
5. The organic electro-luminescent device of claim 4 , wherein the periodic structure varies with a ratio of the two different monomers.
6. The organic electro-luminescent device of claim 2 , wherein the block copolymer has a net structure.
7. The organic electro-luminescent device of claim 6 , wherein the at least two monomers are located at a vertex portion of the net structure and a portion other than the vertex portion in the net structure.
8. The organic electro-luminescent device of claim 1 , wherein the organic emission layer has a different structure depending on a spreading coefficient between monomers constituting the block copolymer and the organic emission material.
9. The organic electro-luminescent device of claim 8 , wherein the organic emission material is distributed around the monomers in the blended structure when the spreading coefficient of the monomer to the organic emission material is greater than 0.
10. The organic electro-luminescent device of claim 9 , wherein the monomers are located at the vertex portion of a net structure.
11. The organic electro-luminescent device of claim 8 , wherein the monomers are distributed around the organic emission material in the blended structure when the spreading coefficient of the organic emission material to the monomer is greater than 0.
12. The organic electro-luminescent device of claim 11 , wherein the monomers are located at the vertex portion of the net structure.
13. An organic electro-luminescent device, comprising:
first and second electrodes over a substrate; and
an organic emission layer between the first and second electrodes, wherein the organic emission layer has a blended structure, the blended structure including a block copolymer and an organic emission material, wherein the block copolymer has at least two monomers and the organic emission material is a polymer emission material.