Low-voltage organic transistors with titanium oxide/polystyrene bilayer dielectrics Available to Purchase

Pentacene-based low-voltage organic transistors were realized with titanium oxide/polystyrene $(TiO2/PS)$ bilayer dielectrics. Significantly, the $TiO2$ bottom layer was fabricated by a layer-by-layer deposition procedure and had an ultrathin thickness $(<5nm)$⁠. The nonpolar PS top layer not only shields out the high polarity $TiO2$ layer, but also reduces the roughness of the dielectric, which results in low gate leakage of dielectric and the more ordered growth of pentacene film. This organic transistor with a $TiO2/PS$ bilayer dielectric was found to exhibit high performance with a low operating voltage $(≤3V)$⁠, and a high on/off ratio $(>107)$⁠.