Blade coating on nanogrooved substrates yielding aligned thin films of high mobility semiconducting polymers

US10186661B2 · kind B2 · utility

Assignee

• The Regents of the University of California · US

Inventors

• Shrayesh N. Patel · Goleta, US
• Edward J. Kramer · Lompoc, US
• Michael L. Chabinyc · Mountain View, US
• Chan Luo · Lompoc, US
• Alan J. Heeger · Lompoc, US

Key dates

• Filing date: Mar 2, 2016
• Grant date: Jan 22, 2019
• Expiry date: Mar 2, 2036

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K85/151

Abstract

A method for enhancing charge carrier mobility of a field-effect transistor device. The method comprises generating uniaxial nanogrooves on a substrate and blade coating a solution comprising a semiconducting polymer onto the substrate. The polymer solution is spread onto the substrate in a direction parallel to the nanogrooves and a main-chain axis of the polymer is parallel to the nanogrooves. The semiconducting polymer can be then annealed, so that a polymer film is formed which is layered on top of the substrate, with polymer chains aligned parallel to a direction of charge carrier movement.