Conducting polymer film composition for organic opto-electronic device comprising graft copolymer of self-doped conducting polymer and organic opto-electronic device using the same

• US 7,968,651 B2
• Filed: 05/02/2008
• Issued: 06/28/2011
• Est. Priority Date: 11/03/2005
• Status: Active Grant

• Current Assignee: Cheil Industries Incorporated (Samsung Group)
• Original Assignee: Cheil Industries Incorporated (Samsung Group)
• Inventors: Bae, Woo Jin, Han, Eun Sil, Huh, Dal Ho, Chae, Mi Young, Lee, Tae Woo
• Primary Examiner(s): Lipman; Bernard
• Application Number:
  US12/114,018
• Publication Number:
  US 20080234442A1
• Time in Patent Office: 1,152 Days
• Field of Search: 525/326.8, 525/326.9, 525/327.2, 525/327.5, 525/540
• US Class Current: 525/326.8
• CPC Class Codes: H01B 1/125 comprising aliphatic main chains, e.g. polyactylenes

Abstract

Provided are a conducting polymer film composition comprising a graft copolymer of a self-doped conducting polymer and an organic opto-electronic device comprising a conducting polymer film formed of the above-mentioned composition. In the graft copolymer, the conducting polymer and a polyacid are connected to each other via chemical binding. Therefore, the composition of the present invention can be used in organic opto-electronic devices with minimal or no dedoping occurring from heat generated inside the device. As a result, the present invention can improve efficiency and life-time of the organic opto-electronic device.

Claims

1. A conducting polymer film composition useful for an organic opto-electronic device, comprising a conducting polymer and a solvent, wherein the composition comprises a graft copolymer of a self-doped conducting polymer represented by Formula 2 below:

2. The composition according to claim 1, wherein B comprises an anion selected from the group consisting of PO₃²⁻

, SO₃⁻

, COO⁻

, I⁻

and CH₃COO⁻

and a cation selected from metal ions or organic ions.

3. The composition according to claim 2, wherein said cation comprises a metal ion selected from the group consisting of Na⁺, K⁺, Li⁺, Mg⁺², Zn⁺² and Al⁺³ or an organic ion selected from the group consisting of H⁺, NH₃⁺ and CH₃(—

CH₂—

)_nO⁺, wherein n is an integer from 1 to 50.

4. The composition according to claim 1, wherein a is an integer from 4 to 15.

5. The composition according to claim 1, wherein a/n is equal to or greater than about 0.0001 and smaller than about 0.8.

6. The composition according to claim 1, wherein said heteroatom is selected from the group consisting of O, S and P.

8. The composition according to claim 1, wherein the graft copolymer of the self-doped conducting polymer is a polyaniline graft copolymer PSS-g-PANI represented by Formula 6 below or a poly-3,4-ethylenedioxypyrrole graft copolymer PSS-g-PEDOP represented by Formula 7 below:

9. The composition according to claim 1, comprising the graft copolymer of the self-doped conducting polymer in an amount ranging from about 0.5 to about 10% by weight.

10. The composition according to claim 1, wherein the solvent is selected from the group consisting of water, alcohol, dimethylformamide (DMF), dimethylsulfoxide, toluene, xylene, chlorobenzene and any combination thereof.

11. The composition according to claim 1, further comprising a crosslinking agent.

12. The composition according to claim 11, wherein the crosslinking agent is a physical crosslinking agent, a chemical crosslinking agent or a combination thereof.

13. The composition according to claim 12, wherein the physical crosslinking agent is a compound selected from the group consisting of glycerol, butanol, polyvinyl alcohol, polyethyleneglycol, polyethyleneimine, polyvinylpyrolidone, and any combination thereof.

14. The composition according to claim 12, comprising the physical crosslinking agent in an amount ranging from about 0.001 to about 5 parts by weight, based on 100 parts by weight of the graft copolymer of the self-doped conducting polymer.

15. The composition according to claim 12, comprising the chemical crosslinking agent in an amount ranging from about 0.001 to about 50 parts by weight, based on 100 parts by weight of the graft copolymer of the self-doped conducting polymer.

16. The composition according to claim 12, wherein the chemical crosslinking agent is a compound selected from the group consisting of tetraethyloxysilane (TEOS), polyaziridine, a melamine-based material, an epoxy-based material, and any combination thereof.

17. A conducting film useful for an organic opto-electronic device comprising the conducting polymer film composition according to claim 1.

18. An organic opto-electronic device comprising a conducting film according to claim 17.

19. The device according to claim 18, wherein the organic opto-electronic device is an organic electroluminescent device, an organic solar cell, an organic transistor or an organic memory device.

7. A conducting polymer film composition useful for an organic opto-electronic device, comprising a conducting polymer and a solvent, wherein the composition comprises a graft copolymer of a self-doped conducting polymer represented by Formula 2 below: