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Method for producing carbon nano-tube film, carbon nano-tube film with laminated structure, anode, organic LED and carbon nano-tube element

A carbon nanotube film and carbon nanotube technology, applied in the direction of carbon nanotubes, single-walled carbon nanotubes, nanocarbons, etc., can solve problems such as increasing the sheet resistance of CNT films, affecting device properties, and destroying CNTs

Inactive Publication Date: 2009-08-19
SONY CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, Hu, H. et al. (Hu, H.; Zhao, B.; Itkis, M.E.; Haddon, R.C.J. Phys. Chem. B 2003, 107, 13838), Zhang, M. et al. (Zhang, M.; Yudasaka, M.; Iijima, S.J.Phys.Chem.B 2004, 108, 149), and Ziegler, K.J. et al. (Ziegler, K.J.; Gu, Z.N.; Peng, H.Q.; Flor, E.L.; Hauge, R.H.; .Soc.2005, 127, 1541) pointed out that in the process of acid treatment, most of the CNTs are destroyed, which will greatly affect the properties of devices based on these CNT films
[0007] Moreover, although the method for preparing CNT membranes based on the filtration method is simple and easy to perform, the step of removing the membrane filter requires a lot of time, and a large amount of "cleaning agent" (such as acetone) is required during the impregnation process.
Failure to completely remove the membrane filter will increase the sheet resistance of the CNT films and reduce their light transmittance

Method used

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  • Method for producing carbon nano-tube film, carbon nano-tube film with laminated structure, anode, organic LED and carbon nano-tube element
  • Method for producing carbon nano-tube film, carbon nano-tube film with laminated structure, anode, organic LED and carbon nano-tube element
  • Method for producing carbon nano-tube film, carbon nano-tube film with laminated structure, anode, organic LED and carbon nano-tube element

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Experimental program
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Effect test

Embodiment 1

[0147] The following three types of CNTs were used to prepare transparent conductive films for comparative study:

[0148] Laser nanotube (L-CNT) (see (1) Guo, T.; Nikolaev, P.; Thess, A.; Colbert, D.T.; Smalley, R.E.Chem.Phys.Lett.1995, 243, 49.(2) Thess, A.; Lee, R.; Nikolaev, P.; Dai, H.; Petit, P.; Robert, J.; .; Fisher, L.E.; Smalley, R.E. Science 1996, 273, 483.),

[0149] Arc discharge nanotubes (P-CNT, P3 nanotubes from Carbon Solutions Inc.), and

[0150] HiPCO nanotubes (H-CNTs, Carbon Nanotechnology Inc.).

[0151] Based on Wu et al. (see Wu, Z.C.; Chen, Z.H.; Du, X.; Logan, J.M.; Sippel, J.; Nikolou, M.; Kamaras, K.; Reynolds, J.R.; Tanner, D.B.; Hebard, A.F.; Rinzler, A.G.Science 2004, 305, 1273) reported the procedure of the filtration method to prepare CNT membranes respectively.

[0152] The configuration of tris(hydroxymethyl)aminomethane hydrochloride (Tris-HCl) buffer is routine for those skilled in the art. For example, the configuration process of 50m...

Embodiment 2

[0163] In order to check whether the above-mentioned resistance exists, the CNT film on the MCE is divided into four parts equally, and one part is processed in the way of the prior art, that is, its membrane filter is immersed in acetone for 48h; the acetone is renewed every 12 hours . The resistance of the film thus obtained was taken as the total resistance. After removing the other three membrane filters with the steam generator of the first aspect, the other three were further treated as follows: remove only Triton X-100 on the front side of the membrane; remove only Triton X-100 on the reverse side of the membrane; And remove the Triton X-100 (as the essential CNT film) on both sides. The results show that the resistance of the CNT film with the essence of 78% transparency is 46% of the total resistance ( Figure 4 illustration in ). and, Figure 4 The variation of the intrinsic CNT film with transparency is shown. As the transparency increased from 62% to 96%, the ...

Embodiment 3

[0167] For the conductivity of transparent CNT films, they are characterized by a dramatic increase of several orders of magnitude, which according to the percolation theory is attributed to the typical phenomenon of electro-osmosis with respect to the formation of a network of conducting particles ((a) Pike, G.E.; Seager , C.phys.Rev.B 1974, 10, 1421.(b) Balberg, I.; Binenbaum, N.; Wagner, N.Phys.Rev.Lett.1984, 52, 1465.(c) Vigolo, B. ; Coulon, C.; Maugey, M.; Zakri, C.; Poulin, P. Science 2005, 309, 920).

[0168] Percolation is a statistical geometric theory that establishes a general law of exponents in power-law dependencies of geometric parameters. The percolation behavior of CNT networks has been reported by many research groups (cf. (a) Hu, L.; Hecht, D.S.; Grüner, G. Nano lett. 2004, 4, 2513. (b) Unalan, H.E.; Fanchini, G. .; Kanwal, A.; Pasquier, A.D.; Chhowalla, M. Nano lett. 2006, 6, 677.). In common terms, for CNT films just above the percolation threshold, the ...

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Abstract

The invention provides a method for making a flexible transparent conductive carbon nanotube (CNT) film and the CNT film prepared by the method. The invention also relates to a method for treating the CNT film by using thionyl bromide (SOBr2) as a dopant, a CNT film pressure body provided with a sandwich structure, a flexible transparent anode comprising the CNT film pressure body, and an organic light-emitting diode (LED) comprising the anode. Compared with the prior impregnation method, the method can quickly and radically remove a film filter, but does not damage the obtained CNT, so that the obtained CNT film can be more widely applied to electroluminescent devices or photovoltaic devices.

Description

technical field [0001] The invention relates to a method for manufacturing a carbon nanotube (CNT) film, in particular to a method for manufacturing a flexible transparent conductive carbon nanotube film, and the CNT film prepared by the method. Compared with the conventional method, the method of the invention can improve the conductivity of the obtained flexible transparent conductive carbon nanotube (CNT) film. The present invention also relates to the use of thionyl bromide (SOBr 2 ) as a method of treating a CNT film as a dopant, a new CNT film with a sandwich structure, a flexible transparent anode including the CNT film, an organic light emitting diode (LED) and a carbon nanotube element including the anode. Background technique [0002] For one-dimensional nanomaterials, carbon nanotubes (CNTs) have increasingly become the focus of multidisciplinary research, and their unique physical and chemical properties as well as their prospects for practical applications have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02B32B7/08B32B9/00H01L51/52H01L51/54B82Y20/00B82Y30/00B82Y99/00H01B5/14H01B13/00H01L33/12H01L33/26H01L33/36H01L33/42H01M4/96
CPCB82Y10/00H01L51/002C01B2202/02H01L51/5206Y02E10/50H01L51/0003C01B31/0273B82Y40/00H01L51/0048C01B2202/28B82Y30/00Y02E10/549C01B32/174Y10T428/30Y10T428/31786H10K71/12H10K71/30H10K85/221H10K50/816
Inventor 梶浦尚志李勇明王钰刘云圻曹灵超魏大程石大川张洪亮于贵
Owner SONY CORP
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