To use all functions of this page, please activate cookies in your browser.
With an accout for my.chemeurope.com you can always see everything at a glance – and you can configure your own website and individual newsletter.
- My watch list
- My saved searches
- My saved topics
- My newsletter
New X-ray technique reveals structure of printable electronics
17-04-2012: An innovative X-ray technique has given North Carolina State University researchers and their collaborators new insight into how organic polymers can be used in printable electronics such as transistors and solar cells. Their discoveries may lead to cheaper, more efficient printable electronic devices.
Printable electronics are created by spraying or printing inks containing conductive organic molecules onto a surface. The process is fast and much less expensive than current production techniques for items like solar cells or computer and television displays. Additionally, it holds potential for amazing new applications: picture a wearable interactive display that needs no batteries. In the solar industry, the ability to print solar cells on giant roll-to-roll printing presses – like printing a newspaper – could make the technology much more affordable and mass marketable.
NC State physicists Dr. Harald Ade and Dr. Brian Collins, in collaboration with Dr. Michael Chabinyc at the University of California Santa Barbara, wanted to know why some processing steps resulted in better and more efficient devices than others. "Manufacturers know that some materials work better than others in these devices, but it's essentially still a process of trial and error," Ade says. "We wanted to give them a way to characterize these materials so that they could see what they had and why it was working."
To do that, Collins and Ade went to Lawrence Berkeley National Laboratory's Advanced Light Source (ALS). They developed a new technique which used the powerful X-rays from the ALS to look at how individual molecules within these materials organize. They found that the best performing devices were characterized by particular molecular alignments within the materials.
"In transistors, we found that as the alignment between molecules increased, so did the performance," Collins says. "In the case of the solar cells, we discovered alignment of molecules at interfaces in the device, which may be the key to more efficient harvesting of light. For both, this was the first time anyone had been able to really look at what was happening at the molecular level."
The researchers' results appear in the journal Nature Materials. Led by NC State and UCSB, an international collaboration of researchers from Lawrence Berkeley National Laboratory, Monash University in Australia, and University Erlangen-Nuremberg in Germany contributed to the work.
"We're hoping that this technique will give researchers and manufacturers greater insight into the fundamentals of these materials," Collins says. "Understanding how these materials work can only lead to improved performance and better commercial viability."
B. A. Collins, H. Yan, E. Gann, H. Ade, J. E. Cochran, M. L. Chabinyc, C. Hub, R. Fink, C.Wang, T. Schuettfort, C. R. McNeill; "Polarized X-ray scattering reveals non-crystalline orientational ordering in organic films"; Nature Materials.
Contact / Request information
Request further information free of charge:
This is where you can add this news to your personal favourites
- North Carolina State Un…
- 1Drew Industrial Division of Ashland Specialty Chemical Company purchases industrial water-treatment business of London-based Fer
- 2LG-DOW Polycarbonate Plant Starts Production in Korea to Effectively Meet Regional Needs
- 3Allegra® Launched in Japan
- 4Caflon® surfactants from Univar as substitutes for banned nonylphenol ethoxylates
- 5Knoll AG: Pharma business sold for $6.9 billion:
- 6Baytron P®– Gateway to a new generation of polymers
- 7Honeywell Appoints Terrence Hahn as Vice President and General Manager for Fluorine Products
- 8PETRONAS and Evonik Industries sign Letter of Intent for projects in Rapid Project
- 9Not just cars, but living organisms need antifreeze to survive
- 10Putting electronic cigarettes to the test