Inorganic Oxide Core, Polymer Shell Nanocomposite as High K Gate Dielectric for Flexible Electronics Applications

Organic/inorganic core shell nanoparticles have been synthesized using high K TiO2 as the core nanoparticle, and polystyrene as the shell. This material is easy to process and forms transparent continuous thin films, which exhibit a dielectric constant enhancement of over three times that of bulk polystyrene. This new dielectric material has been incorporated into capacitors and thin film transistors (TFTs). Mobilities approaching 0. 2 cm2/Vs have been measured for pentacene TFTs incorporating the new TiO2 polystyrene nanostructured gate dielectric, indicating good surface properties for pentacene film growth. This novel strategy for generating high K gate flexible dielectrics will be of value in improving organic and flexible electronic device performance.