Abstract
Electronics are expanding into new fields where lowcost manufacture in
large volumes is a deciding factor. There are visions of electronic
functionality in single use items and everyday applications where one of the
main aims is to increase product attractiveness and give a commercial edge and
added value to the product. This has lead to the need of, and consequently
the development of new methods for preparing electronic devices, utilizing
solution processable materials and printing type deposition and patterning
techniques. We present examples of electronic components where standard
printing methods and tabletop proofing devices have been utilized for sample
preparation. The sample preparation methods demonstrate the applicability of
standard printing technology, as well as their limitations, for the
manufacture of basic electronic components, such as diodes and transistors,
using conjugated polymers and soluble molecules. The main techniques applied
are gravure and flexographic printing, and as a substrate flexible PET film is
used. The issues involved in multilayer printing of conjugated polymers and
other materials needed for electronic devices are addressed, for example in
the case of organic transistors, the use of thermally or UV crosslinkable
polymer insulators. As polymer semiconductor material commercial polythiophene
based conjugated polymers are used. For comparison samples are made in
parallel, where for example the electrodes are metallic, traditionally made by
thermal vacuum evaporation. The resolution of the printing methods used as
such is not sufficient for the required transistor channel dimensions in a
standard OFET. Novel application areas as well as novel manufacturing
techniques opens new possibilities for entirely new device concepts. The
electronic components in a massproduced printed circuit may work by completely
new mechanisms. The gravure and flexographic printing methods are chosen as
they allow for lowcost fabrication using organic material in solution and the
process is easily scaled for high volumes even using existing printing
machines.
Original language | English |
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Publication status | Published - 2007 |
MoE publication type | Not Eligible |
Event | 2007 MRS Spring Meeting: Symposium N: Printing Methods for Electronics, Photonics, and Biomaterials - San Francisco, United States Duration: 9 Apr 2007 → 13 Apr 2007 |
Conference
Conference | 2007 MRS Spring Meeting |
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Country/Territory | United States |
City | San Francisco |
Period | 9/04/07 → 13/04/07 |
Keywords
- Composition & Microstructure
- Material Type
- organic
- Synthesis & Processing
- Chemical Reaction
- solution deposition
- Performance
- Functionality
- devices