Logic circuits composed of flexible carbon nanotube thin-film transistor and ultra-thin polymer gate dielectric.

ABSTRACT: Printing electronics has become increasingly prominent in the field of electronic engineering because this method is highly efficient at producing flexible, low-cost and large-scale thin-film transistors. However, TFTs are typically constructed with rigid insulating layers consisting of oxides and nitrides that are brittle and require high processing temperatures, which can cause a number of problems when used in printed flexible TFTs. In this study, we address these issues and demonstrate a method of producing inkjet-printed TFTs that include an ultra-thin polymeric dielectric layer produced by initiated chemical vapor deposition (iCVD) at room temperature and highly purified 99.9% semiconducting carbon nanotubes. Our integrated approach enables the production of flexible logic circuits consisting of CNT-TFTs on a polyethersulfone (PES) substrate that have a high mobility (up to 9.76?cm(2) V(-1) sec(-)1), a low operating voltage (less than 4?V), a high current on/off ratio (3?×?10(4)), and a total device yield of 90%. Thus, it should be emphasized that this study delineates a guideline for the feasibility of producing flexible CNT-TFT logic circuits with high performance based on a low-cost and simple fabrication process.

SUBMITTER: Lee D 

PROVIDER: S-EPMC4869014 | biostudies-literature | 2016 May

REPOSITORIES: biostudies-literature