LONDON Swedish scientists are touting the possibility of cheaper flexible display screens and solar cells as a result of research and development in the production of organic electronics.
Physicists at Umeĺ University in Sweden say their advance into simpler and potentially cheaper methods for making these and other electronic components has huge potential.
The process relies on depositing thin films of electronic materials on flexible surfaces like paper or plastic.
Electronic components with various functions can then be created by patterning the film with a specific structure.
According to Ludwig Edman, one of the team of researchers at the University, this type of patterning has been a complex process and has tended to destroy the electronic properties of the organic material.
“We have now developed a method that enables us to create patterns in an efficient and gentle way. With the patterned organic material as a base, we have managed to produce well-functioning transistors," said Edman.
A thin film of an organic electronic material, or fullerene, is first painted on a selected surface. The parts of the film that are to remain in place are then directly exposed to laser light.
The whole film can thus be developed by rinsing it with a solution. A well-defined pattern then emerges where the laser light hit the surface.
The researchers stress the method is both simple and scalable, and could in time be deployed to make cheap and flexible electronics in an assembly line process.
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