Spin-cast composite gate insulation for low driving voltages and memory effect in organic field-effect transistors
- 19 February 2007
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 90 (8), 083501
- https://doi.org/10.1063/1.2591314
Abstract
The authors report on a solution-processed composite film based on poly(vinylidene fluoride/trifluoroethylene) copolymer and barium titanate (BT) nanopowder, to be used as ferroelectric high-κ gate insulation in organic field-effect transistors (OFETs). Flexible films of up to 50vol% BT powder content are produced by preparing homogeneous dispersion of the powder in the polymer solutions. The films exhibited high specific volume resistivities combined with dielectric constants of up to 51.5 at 1kHz. Low-voltage OFETs with ferroelectric hysteresis and good memory retention properties were demonstrated by using the composite films.Keywords
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