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High-resolution inkjet printing of all-polymer transistor circuits
H Sirringhaus1, T Kawase, R H Friend
1Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 OHE, UK. hs220@phy.cam.ac.uk
Science (New York, N.Y.)
|January 11, 2000
Summary
Direct inkjet printing enables low-cost fabrication of complete transistor circuits using solution-processed materials. This method achieves high resolution and performance, paving the way for continuous manufacturing of integrated electronics.
Area of Science:
- Materials Science
- Electronics Engineering
- Nanotechnology
Background:
- Direct printing of functional electronic materials offers a promising avenue for cost-effective integrated circuit fabrication.
- Continuous manufacturing of all circuit components in a single environment is crucial for practical applications.
Purpose of the Study:
- To demonstrate the direct inkjet printing of complete transistor circuits.
- To achieve high-resolution patterning and reliable performance of printed electronic components.
Main Methods:
- Utilized solution-processed polymer conductors, insulators, and self-organizing semiconductors.
- Employed substrate surface energy patterning to control inkjet droplet deposition.
- Achieved high-resolution definition of 5-micrometer channel lengths.
Main Results:
- Successfully printed complete transistor circuits with via-hole interconnections.
- Demonstrated high mobilities of 0.02 cm²/Vs.
- Achieved excellent on-off current switching ratios of 10⁵.
Conclusions:
- Direct inkjet printing is a viable method for fabricating functional electronic circuits.
- The developed technique allows for continuous manufacturing and high-performance printed electronics.
- This approach has the potential to significantly reduce the cost of integrated circuit production.
