التفاصيل البيبلوغرافية
| العنوان: |
TRANSPARENT CARBON NANOTUBE ELECTRODE WITH NET-LIKE CARBON NANOTUBE FILM AND PREPARATION METHOD THEREOF |
| Document Number: |
20080171193 |
| تاريخ النشر: |
July 17, 2008 |
| Appl. No: |
11/767273 |
| Application Filed: |
June 22, 2007 |
| مستخلص: |
Provided is a transparent carbon nanotube (CNT) electrode comprising a net-like (i.e., net-shaped) CNT thin film and a method for preparing the same. More specifically, a transparent CNT electrode comprises a transparent substrate and a net-shaped CNT thin film formed on the transparent substrate, and a method for preparing a transparent CNT electrode, comprising forming a thin film using particulate materials and CNTs, and then removing the particulate materials to form a net-shaped CNT thin film. The transparent CNT electrode exhibits excellent electrical conductivity while maintaining high light transmittance. Therefore, the transparent CNT electrode can be widely used to fabricate a variety of electronic devices, including image sensors, solar cells, liquid crystal displays, organic electroluminescence (EL) displays, and touch screen panels, that have need of electrodes possessing both light transmission properties and conductive properties. |
| Inventors: |
YI, Dong Kee (Yongin-si, KR); YOON, Seon Mi (Yongin-si, KR); CHOI, Jae Young (Yongin-si, KR); PARK, O Ok (Seoul, KR); KIM, Mun Ho (Daejeon, KR); CHOI, Hong Kyoon (Daejeon, KR) |
| Assignees: |
SAMSUNG ELECTRONICS CO., LTD. (Suwon-si, KR) |
| Claim: |
1. A transparent carbon nanotube (CNT) electrode, comprising: a transparent substrate; and a CNT thin film having a net-shaped structure formed on a surface of the transparent substrate. |
| Claim: |
2. The electrode according to claim 1, wherein the net-shaped CNT thin film further includes nanoparticles. |
| Claim: |
3. The electrode according to claim 3, wherein the nanoparticles are metal nanoparticles. |
| Claim: |
4. The electrode according to claim 1, wherein the transparent substrate is a transparent inorganic substrate selected from a glass substrate or a quartz substrate, or wherein the substrate is a flexible transparent substrate made of a material selected from the group consisting of polyethylene terephthalate, polyethylene naphthalate, polyethylene sulfone, polycarbonate, polystyrene, polypropylene, polyester, polyimide, polyetheretherketone, polyetherimide, acrylic resins, olefin-maleimide copolymers, and norbornene resins. |
| Claim: |
5. The electrode according to claim 1, wherein the CNTs are selected from the group consisting of single-walled carbon nanotubes, double-walled carbon nanotubes, multi-walled carbon nanotubes, rope carbon nanotubes, and a combination thereof. |
| Claim: |
6. The electrode according to claim 5, wherein the single-walled carbon nanotubes are metallic carbon nanotubes. |
| Claim: |
7. The electrode according to claim 1, wherein the net-shaped CNT thin film further includes a dispersant. |
| Claim: |
8. The electrode according to claim 7, wherein the dispersant is a conductive dispersant. |
| Claim: |
9. An electronic device comprising the transparent CNT electrode of claim 1. |
| Claim: |
10. The device according to claim 9, wherein the electronic device is selected from the group consisting of image sensors, solar cells, liquid crystal displays, organic electroluminescence (EL) displays, and touch screen panels. |
| Claim: |
11. A method for preparing a transparent carbon nanotube (CNT) electrode, comprising: (a) mixing particulate materials and CNTs to form a mixed composition; (b) forming a mixed-composition thin film on a transparent substrate with the mixed composition; and (c) removing the particulate materials from the mixed-composition thin film and leaving CNTs to form a net-shaped CNT thin film. |
| Claim: |
12. A method for preparing a transparent carbon nanotube (CNT) electrode, comprising: (a) arranging particulate materials on a transparent substrate to form a particulate thin film; (b) injecting a CNT composition into the particulate thin film to form a CNT composition-injected thin film; and (c) removing the particulate materials from the CNT composition-injected thin film and leaving CNTs to form a net-shaped CNT thin film. |
| Claim: |
13. The method according to claim 11, wherein the particulate materials are inorganic or organic colloidal particles. |
| Claim: |
14. The method according to claim 13, wherein the organic colloidal particles are selected from the group consisting of polystyrene, polymethylmethacrylate, polylysine, polydivinylbenzene, and a combination thereof, and the inorganic colloidal materials are selected from the group consisting of silica, titania, silver, gold, a combination thereof, and an alloy thereof. |
| Claim: |
15. The method according to claim 11, wherein a mixing ratio of the particulate material and CNT respectively in the mixed composition is from 1:5 to 1:30 (w/w). |
| Claim: |
16. The method according to claim 11, further comprising treatment of the CNT's with a dispersant prior to formation of the mixed-composition thin film. |
| Claim: |
17. The method according to claim 16, wherein the dispersant is a conductive dispersant. |
| Claim: |
18. The method according to claim 11, wherein formation of the mixed-composition thin film includes addition of nanoparticles to the mixed composition. |
| Claim: |
19. The method according to claim 18, wherein the nanoparticles are metal nanoparticles. |
| Claim: |
20. The method according to claim 11, further comprising forming an additional thin film of the CNT composition, after formation of the CNT thin film, on a surface of the CNT thin film opposite the substrate. |
| Claim: |
21. The method according to claim 11, wherein the particulate material has an average particle size of 50 nm to 10 μm. |
| Claim: |
22. The method according to claim 11, wherein the particulate materials comprise a different particle size. |
| Claim: |
23. The method according to claim 11, wherein the transparent substrate is a transparent inorganic substrate selected from a glass substrate or a quartz substrate, or wherein the substrate is a flexible transparent substrate made of a material selected from the group consisting of polyethylene terephthalate, polyethylene naphthalate, polyethylene sulfone, polycarbonate, polystyrene, polypropylene, polyester, polyimide, polyetheretherketone, polyetherimide, acrylic resins, olefin-maleimide copolymers, and norbornene resins. |
| Claim: |
24. The method according to claim 11, wherein the CNTs are selected from the group consisting of single-walled carbon nanotubes, double-walled carbon nanotubes, multi-walled carbon nanotubes, rope carbon nanotubes, and a combination thereof. |
| Claim: |
25. The method according to claim 24, wherein the single-walled carbon nanotubes are metallic carbon nanotubes. |
| Claim: |
26. The method according to claim 11, wherein formation of the thin film is carried out by spin coating, spray coating, filtration, bar coating, or convective arrangement. |
| Claim: |
27. The method according to claim 26, wherein the convective arrangement includes positioning a mixed composition of particulate materials and CNTs between a first substrate and a second substrate, facing opposite to each other at a fixed distance, and moving the first substrate horizontally relative to the second substrate. |
| Claim: |
28. The method according to claim 11, wherein removal of the particulate materials is carried out by heat treatment, organic solvent treatment, acid solution treatment, base solution treatment, or plasma treatment. |
| Claim: |
29. The method according to claim 28, wherein the organic solvent used in the organic solvent treatment is at least one selected from the group consisting of toluene, cyclohexane, benzene, chloroform, and a combination thereof. |
| Claim: |
30. The method according to claim 28, wherein the acid used in the acid solution treatment is at least one selected from the group consisting of hydrofluoric acid, acetic acid, phosphoric acid, and a combination thereof, and wherein the base used in the base solution treatment comprises sodium hydroxide. |
| Claim: |
31. The method according to claim 12, wherein the particulate materials are inorganic or organic colloidal particles. |
| Claim: |
32. The method according to claim 31, wherein the organic colloidal particles are selected from the group consisting of polystyrene, polymethylmethacrylate, polylysine, polydivinylbenzene, and a combination thereof, and the inorganic colloidal materials are selected from the group consisting of silica, titania, silver, gold, a combination thereof, and an alloy thereof. |
| Claim: |
33. The method according to claim 12, further comprising treatment of the CNTs with a dispersant prior to formation of the CNT composition-injected thin film. |
| Claim: |
34. The method according to claim 33, wherein the dispersant is a conductive dispersant. |
| Claim: |
35. The method according to claim 12, wherein formation of the CNT composition-injected thin film includes addition of nanoparticles to the CNT composition. |
| Claim: |
36. The method according to claim 35, wherein the nanoparticles are metal nanoparticles. |
| Claim: |
37. The method according to claim 12, wherein the particulate material has a particle size of 50 nm to 10 μm. |
| Claim: |
38. The method according to claim 12, wherein particulate materials comprise a different particle size. |
| Claim: |
39. The method according to claim 12, wherein the transparent substrate is a transparent inorganic substrate selected from a glass substrate or a quartz substrate, or wherein the substrate is a flexible transparent substrate made of a material selected from the group consisting of polyethylene terephthalate, polyethylene naphthalate, polyethylene sulfone, polycarbonate, polystyrene, polypropylene, polyester, polyimide, polyetheretherketone, polyetherimide, acrylic resins, olefin-maleimide copolymers, and norbornene resins. |
| Claim: |
40. The method according to claim 12, wherein the CNTs are selected from the group consisting of single-walled carbon nanotubes, double-walled carbon nanotubes, multi-walled carbon nanotubes, rope carbon nanotubes, and a combination thereof. |
| Claim: |
41. The method according to claim 40, wherein the single-walled carbon nanotubes are metallic carbon nanotubes. |
| Claim: |
42. The method according to claim 12, wherein formation of the thin film is carried out by spin coating, spray coating, filtration, bar coating, or convective arrangement. |
| Claim: |
43. The method according to claim 42, wherein the convective arrangement includes positioning a mixed composition of particulate materials and CNTs between a first substrate and a second substrate, facing opposite to each other at a fixed distance, and moving the first substrate horizontally relative to the second substrate. |
| Claim: |
44. The method according to claim 12, wherein removal of the particulate materials is carried out by heat treatment, organic solvent treatment, acid solution treatment, base solution treatment, or plasma treatment. |
| Claim: |
45. The method according to claim 44, wherein the organic solvent used in the organic solvent treatment is at least one selected from the group consisting of toluene, cyclohexane, benzene, chloroform, and a combination thereof. |
| Claim: |
46. The method according to claim 44, wherein the acid used in the acid solution treatment is at least one selected from the group consisting of hydrofluoric acid, acetic acid, phosphoric acid, and a combination thereof, and wherein the base used in the base solution treatment comprises sodium hydroxide. |
| Claim: |
47. The method according to claim 12, further comprising etching the particulate materials after formation of the CNT composition-injected thin film. |
| Claim: |
48. The method according to claim 47, wherein etching of the particulate materials is carried out by ion etching or a plasma treatment. |
| Current U.S. Class: |
428/327 |
| Current International Class: |
05; 32 |
| رقم الانضمام: |
edspap.20080171193 |
| قاعدة البيانات: |
USPTO Patent Applications |