Materials improving organic transistors
The group of Professors Magnus Berggren and Xavier Crispin from Linköping University (Sweden), partners in the ONE-P project, report in PNAS the use of a novel family of organic semiconductors in low voltage organic thin-film transistors, allowing to combine fast response and high current throughput.
Semiconducting polymers are electroactive materials that have been proposed as active materials in organic electrochemical transistors (OECTs), already in 1987 by Mark Wrighton. After more than 20 years, many research groups have published scientific reports about organic transistors composed of an electrolyte and a semiconducting polymer. The motivation for such a research is driven by the unique features of these transistors for printed electronics: (i) low operating voltage (< 2V), and (ii) printable because the operating voltage is not coupled to the thickness of the electrolyte gate insulator. However, it has been complicated to combine two additional key properties: a short switch time and a high current throughput.
Within the EU integrated project ONE-P, the group of Professors Magnus Berggren and Xavier Crispin from Linköping University (Sweden), report in PNAS the use of a novel family of conjugated polyelectrolytes in OECTs. The materials allow achieving a unique two-dimensional charge transport in the semiconducting channel, which provides the transistor surprisingly high throughput current and cutoff frequency.
More info: http://www.pnas.org/content/early/2011/08/22/1107063108.abstract
