Precisely Controlled Ultrathin Conjugated Polymer Films for Large Area Transparent Transistors and Highly Sensitive Chemical Sensors

• DOI: 10.1002/adma.201505946
• Publication Date: 2016-02-05T17:40:37Z
• Authors: Dongyoon Khim; Gi‐Seong Ryu; Won‐Tae Park; Hyunchul Kim; Myungwon Lee; Yong‐Young Noh
• Keywords: Percolation (cognitive psychology)

A uniform ultrathin polymer film is deposited over a large area with molecularlevel precision by the simple wire-wound bar-coating method. The bar-coated films not only exhibit high transparency of up to 90% in visible wavelength range but also charge carrier mobility degree percolation through uniformly covered nanofibrils. They are capable realizing highly sensitive multigas sensors and represent first successful report ethylene detection using sensor based on organic field-effect transistors.