Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Printing with Lasers: Making Electronics Quick and Easy

An optical microscopy image on of the channels in a printed OECT array.
An optical microscopy image on of the channels in a printed OECT array.

The field of printed electronics has given us a vision of ubiquitous electronic products, integrated on everyday, low-cost products, such as sensors or labels that can be printed on flexible substrates for food packages to indicate fresheness, temperature, or other important parameters. However, printing of electronic devices requires a resolution that is beyond the limit of conventional graphical printing. Another bottleneck that prevents production scale-up (e.g. roll-to-roll or sheet-based manufacturing) is the accuracy of the positioning of the substrate between the individual process steps.

Printing with Lasers: Making Electronics Quick and Easy

Germany | Posted on May 17th, 2012

Now, in new work, a German-Swedish research collaboration between the Chemnitz University of Technology, the Fraunhofer Institute of Electronic Nanosystems (Chemnitz), Linköping University, and Acreo AB (Norrköping, a research institute from the Swedish ICT sector), present a novel, hybrid manufacturing concept for organic electrochemical transistors (OECTs).

Initiated by the EU ICT FP7 Network of Excellence "PolyNet" (2008-2010, grant agreement 214006), the researchers combined standard printing and laser microstructuring techniques. The nice thing with OECTs is that their electrical parameters do not strictly relate to the feature size: low-voltage operation is independent of the transistor channel length and the thickness of the dielectric layer, lowering the resolution demands compared to other transistor concepts like field-effect transistors.

Addressing the alignment precision, the key of the manufacturing concept is to have the laser light find its target automatically: only when and where the scanning laser hits the printed conductive layer, the material is delaminated and the layer is separated into the two electrodes, source and drain. At the same time, the deposited heat introduces a vertical void in the transparent dielectric layer above. The void is autonomously filled by capillary forces when applying a semiconductor material in a subsequent printing step. Finally, after printing a liquid electrolyte, a coated plastic foil is laminated on the stack from the top, forming the gate electrode and completing the transistor.

The subtractive step allows for printing arrays of OECTs (17×50) on DIN A4 (297×210 mm²) flexible sheet substrates. As a perspective, the combined usage of digital techniques (scanning laser, inkjet printing) can pave the way for personalized devices, e.g. arrays of OECTs with varying electrolytes as the active elements in printed large-area sensor arrays.


For more information, please click here

Copyright © Wiley-VCH Materials Science Journals

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

Link to the original paper on Wiley Online Library:

Related News Press

News and information

GLOBALFOUNDRIES and Soitec Enter Into Long-term Supply Agreement on FD-SOI Wafers: Strategic milestone to help guarantee a secure, high-volume supply of FD-SOI technology September 20th, 2017

GLOBALFOUNDRIES Announces Availability of mmWave and RF/Analog on Leading FDX™ FD-SOI Technology Platform: Technology solution delivers ‘connected intelligence’ to next generation high-volume wireless and IoT applications with lower power and significantly reduced cost September 20th, 2017

GLOBALFOUNDRIES Announces Availability of Embedded MRAM on Leading 22FDX® FD-SOI Platform: Advanced embedded non-volatile memory solution delivers ‘connected intelligence’ by expanding SoC capabilities on the 22nm process node September 20th, 2017

Copper catalyst yields high efficiency CO2-to-fuels conversion: Berkeley Lab scientists discover critical role of nanoparticle transformation September 20th, 2017


Copper catalyst yields high efficiency CO2-to-fuels conversion: Berkeley Lab scientists discover critical role of nanoparticle transformation September 20th, 2017

Solar-to-fuel system recycles CO2 to make ethanol and ethylene: Berkeley Lab advance is first demonstration of efficient, light-powered production of fuel via artificial photosynthesis September 19th, 2017

A new approach to ultrafast light pulses: Unusual fluorescent materials could be used for rapid light-based communications systems September 19th, 2017

New quantum phenomena in graphene superlattices September 18th, 2017


GLOBALFOUNDRIES Delivers 8SW RF SOI Technology for Next-Generation Mobile and 5G Applications: Advanced 8SW 300mm SOI technology enables cost-effective, high-performance RF front-end modules for 4G LTE mobile and sub-6GHz 5G applications September 20th, 2017

GLOBALFOUNDRIES Unveils Vision and Roadmap for Next-Generation 5G Applications: Technology platforms are uniquely positioned to enable a new era of ‘connected intelligence’ with the transition to 5G September 20th, 2017

GLOBALFOUNDRIES Delivers Custom 14nm FinFET Technology for IBM Systems: Jointly developed 14HP process is world’s only technology that leverages both FinFET and SOI September 20th, 2017

GLOBALFOUNDRIES Introduces New 12nm FinFET Technology for High-Performance Applications September 20th, 2017


Graphene based terahertz absorbers: Printable graphene inks enable ultrafast lasers in the terahertz range September 13th, 2017

Researchers printed graphene-like materials with inkjet August 17th, 2017

Simultaneous Design and Nanomanufacturing Speeds Up Fabrication: Method enhances broadband light absorption in solar cells August 5th, 2017

Meniscus-assisted technique produces high efficiency perovskite PV films July 7th, 2017

The latest news from around the world, FREE

  Premium Products
Only the news you want to read!
 Learn More
University Technology Transfer & Patents
 Learn More
Full-service, expert consulting
 Learn More

Nanotechnology Now Featured Books


The Hunger Project