Scientists have created the first bipolar transistor from organic materials

Scientists have created the first bipolar transistor from organic materials – this promises a breakthrough in flexible electronics

OLED displays were a breakthrough after LCD screens, greatly aided by the organic nature of the first’s LEDs. Organic materials are ideal for manufacturing electronics on thin and flexible substrates, as inkjet printing technologies are widely used for this. And if everything was more or less good with LEDs and field effect transistors made of organic material, then there were no worthy organic bipolar transistors. But now they are!

    Image source: TU Dresden

Image source: TU Dresden

The world’s first efficient bipolar transistor made from organic (carbonaceous) materials created Specialists from the Technical University of Dresden (TUD). The group worked under the direction of Professor Karl Leo, who nurtured the idea for over 20 years. And everything turned out, as reported by the developers article In the magazine Nature.

Crucial to the invention was the use of highly ordered thin organic layers. The new technology has provided a much more efficient transistor than previous developments in this area. Organic bipolar transistors achieve operating frequencies in the gigahertz range for the first time. “Organics” thus opens the way to “digital” – to powerful and productive processors and controllers on flexible substrates that can be used in hundreds of applications, from electronics to implants.

    Image source: nature

Image source: nature

dr Shu-Jen Wang, who co-led the project with Dr. Michael Sawatsky, explained: “The first implementation of an organic bipolar transistor was a big challenge because we had to create very high quality layers and new structures. However, the superior performance of the device has rewarded those efforts.”

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