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Improvements in thin film production

A film and modification technology, applied in the field of devices with the film, to achieve good device performance, improve device efficiency, and high-efficiency injection/extraction effects

Inactive Publication Date: 2008-08-13
UNIVERSITY OF SURREY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0019] The present invention aims to overcome or at least alleviate some or all of the aforementioned problems

Method used

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  • Improvements in thin film production
  • Improvements in thin film production
  • Improvements in thin film production

Examples

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Effect test

no. 1 approach

[0050] In order to fabricate thin film devices comprising composites of carbon nanotubes and molecular semiconductor materials, the following several stages are required: (i) preparation of a stable composite solution of carbon nanotubes and molecular semiconductor materials; (ii) processing of the composite solution to form Thin films with uniform distribution of carbon nanotubes; (iii) Fabrication of electronic devices using carbon nanotube-molecular semiconductor thin films.

[0051] The first stage is to grow the carbon nanotube material using any known carbon nanotube growth method. As noted above, carbon nanotubes can be synthesized by several different methods including chemical vapor deposition (CVD), arc discharge, and laser ablation. In this embodiment, the carbon nanotubes are grown using a high temperature CVD method, as is known in the art.

[0052] The resulting carbon nanotubes are carbon nanotubes bundled together and thus need to be unwound from this state. ...

no. 2 approach

[0103] As described in this embodiment mode, the present invention can also be used in organic light emitting diodes (OLEDs).

[0104] OLEDs consist of one or more semiconducting organic films sandwiched between two electrodes.

[0105] Figure 9A shows a schematic diagram of a model bilayer OLED device according to this embodiment. The device includes a transparent anode 901 . Next to the transparent anode 901 are two organic layers, namely a hole transport layer 902 and an emitter layer 903 . Next to the emitter layer is the cathode 904 . An external power source 905 is also illustrated in the figure. Light 906 is generated in emitter layer 903 and exits the device through hole transport layer 902 and anode 901 .

[0106] Figure 9B shows an energy band diagram corresponding to the OLED device shown in Figure 9A. When a forward bias voltage is applied to the electrodes via an external power source (905), holes are injected from the anode 901 into the hole transport layer ...

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Abstract

The present invention discloses a method of manufacturing a film comprising uniformly dispersed carbon nanotubes, the method comprising the steps of: modifying a molecular semiconductor to render it soluble; modifying the molecular semiconductor to promote a high degree of molecular order; and Frontier orbital overlap between adjacent molecules; modifying carbon nanotubes to make them soluble; combining the soluble carbon nanotubes with the soluble molecular semiconductor in a solvent to form a solution; making the described film.

Description

technical field [0001] The present invention relates to improvements in the fabrication of thin films used in electronic devices employing organic semiconductors. In particular, the present invention relates to improved methods of making organic semiconductor thin films having uniformly dispersed carbon nanotubes, and devices having such thin films. Background technique [0002] Please note that in this application, carbon nanotubes (CNTs) refer to single-walled carbon nanotubes (SWCNTs), multi-walled carbon nanotubes (MWCNTs) or a mixture of both. Furthermore, since carbon nanotubes can be synthesized by several different methods, such as chemical vapor deposition (CVD), arc discharge, and laser ablation, it should be noted that the present application is not limited to any particular method of manufacturing carbon nanotubes. [0003] A great deal of research and development has been done in the field of carbon nanotube fabrication. Applicants have previously filed patent...

Claims

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Application Information

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IPC IPC(8): H01L51/30C01B31/02H01L33/00H01L33/26H01L33/42H01L51/00H01L51/42H01L51/50
CPCB82Y10/00B82Y30/00B82Y40/00Y02E10/549C01B32/174Y02P20/133Y02P70/50H10K71/191H10K85/221H10K85/311H10K50/171H10K30/50H05B33/12C01B32/15H10K71/12H10K85/60H10K85/30B82B3/0009H10K30/30
Inventor 罗斯·安德鲁·哈顿森布提拉切莱格·拉维·希尔瓦
Owner UNIVERSITY OF SURREY
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