Use of conductive carbon black/graphite mixtures for the production of low-cost electronics

• US 7,329,559 B2
• Filed: 01/14/2004
• Issued: 02/12/2008
• Est. Priority Date: 01/21/2003
• Status: Expired due to Fees

• Current Assignee: PolyIC GmbH & Co. KG (Leonhard KURZ Stiftung & Company KG)
• Original Assignee: PolyIC GmbH & Co. KG (Leonhard KURZ Stiftung & Company KG)
• Inventors: Rost, Henning, Bernds, Adolf, Knobloch, Alexander
• Primary Examiner(s): Zarneke; David A.
• Application Number:
  US10/542,679
• Publication Number:
  US 20060057769A1
• Time in Patent Office: 1,490 Days
• Field of Search: 438/99
• US Class Current: 438/99
• CPC Class Codes: B82Y 10/00 Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
• CPC Class Codes: H01B 1/04 mainly consisting of carbon-silicon compounds, carbon or silicon
• CPC Class Codes: H01B 1/124 Intrinsically conductive polymers
• CPC Class Codes: H01B 1/24 the conductive material comprising carbon-silicon compounds, carbon or silicon
• CPC Class Codes: H10K 10/00 Organic devices specially adapted for rectifying, amplifying, oscillating or switching; Organic capacitors or resistors having potential barriers integrated devices or assemblies of multiple devices H10K19/00
• CPC Class Codes: H10K 10/20 Organic diodes
• CPC Class Codes: H10K 30/00 Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation integrated devices or assemblies of multiple devices H10K39/00, H10K65/00; electrolytic light-sensitive devices H01G9/20
• CPC Class Codes: H10K 71/60 Forming conductive regions or layers, e.g. electrodes
• CPC Class Codes: H10K 85/1135 Polyethylene dioxythiophene [PEDOT]; Derivatives thereof
• CPC Class Codes: H10K 85/20 Carbon compounds, e.g. carbon nanotubes or fullerenes
• CPC Class Codes: Y02E 10/549 Organic PV cells
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

Disclosed are conductive polymer solutions employed for the production of organic electronic components, which solutions are particularly useful for printing an organic element of an electronic component. To this end, particles of carbon black and graphite are used in the form of microplatelets in the polymer solutions. The components may include organic transistors and circuits, organic diodes, organic-based capacitors, organic photovoltaic cells, organic sensors and actuators, and combinations thereof.

Claims

1. A method for the production of an electronic component comprising forming an element of the component with a polymer solution filled with a mixture of carbon black and graphite, in which solution the particles of carbon black and graphite are present substantially in the form of microplatelets.

2. The method as defined in claim 1, wherein said polymer solution contains additives.

3. The method as defined in claim 1, wherein the step for forming said element of the electronic component comprises at least one printing operation for printing said element with said solution.

4. The method as defined in claim 1 for the construction of an organic electronic component containing said element, further including the step of selecting the component from the group consisting of organic transistors and circuits, organic diodes, organic-based capacitors, organic photovoltaic cells, organic sensors and actuators, and combinations thereof.

5. The method as defined in claim 1 including selecting the solids content of the particles of carbon black and graphite in said solution in the range from about 15 to about 60% by weight.

6. The method as defined in claim 1 including selecting the particles of carbon black and graphite as microplatelets in point-free form.

7. The method of claim 2 including adding additives in the form of at least one of PEDOT and PANI.

8. The method of any one of claims 3-6 including adding additives to the polymer solution.

9. The method of any one of claims 2 and 4-7 wherein the step for forming said element of the electronic component comprises printing said element with said solution.

10. The method of any one of claims 2-3 and 5-7 for the construction of an organic electronic component containing said element, comprising the step of selecting the component from the group consisting of organic transistors and circuits, organic diodes, organic-based capacitors, organic photovoltaic cells, organic sensors and actuators, and combinations thereof.