Abstract
Resume: Organic thin film transistors offer great potential
for use in flexible electronics. Much of this potential lies in the solution processability of the organic polymers
enabling both roll coating and printing on flexible substrates and thus greatly reducing the material and fabrication
costs. We present flexible organic power transistors prepared by fast (20 m min−1) roll-to-roll flexographic printing
of the drain and source electrode structures, with an interspace below 50 um, directly on polyester foil[1]. The
devices have top gate architecture and were completed by slotdie coating of the organic semiconductor poly3hexylthiophene
and the dielectric material polyvinylphenol before the gate was applied by screen printing. All the processing was
realized in ambient air on a PET flexible substrate. We explore the footprint and the practically accessible
geometry of such devices with a special view toward being able to drive large currents while handling the thermal
aspects in operation together with other organic printed electronics technologies such as large area organic photovoltaics
(OPV) and large area electrochromic displays (EC). We find especially that an elevated operational temperature is
beneficial with respect to both transconductance and on/off ratio. We achieve high currents of up to 45 mA at a
temperature of 80 °C. Finally, we observe a significant temperature dependence of the performance, which can
be explored further in sensing applications.
Original language | English |
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Publication date | 2017 |
Number of pages | 1 |
Publication status | Published - 2017 |
Event | E-MRS Spring Meeting 2017 - Strasbourg Convention Centre , Stasbourg, France Duration: 22 May 2017 → 26 May 2017 http://www.european-mrs.com/meetings/2017-spring-meeting |
Conference
Conference | E-MRS Spring Meeting 2017 |
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Location | Strasbourg Convention Centre |
Country/Territory | France |
City | Stasbourg |
Period | 22/05/2017 → 26/05/2017 |
Internet address |