Solution-processable, low-voltage, and high-performance monolayer field-effect transistors with aqueous stability and high sensitivity.

Chen, Hongliang; Dong, Shaohua; Bai, Meilin; Cheng, Nongyi; Wang, Hao; Li, Mingliang; Du, Huiwen; Hu, Shuxin et al. · Adv Mater · 2015

basic_science · Level V

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Abstract

Low-voltage, low-cost, high-performance monolayer field-effect transistors are demonstrated, which comprise a densely packed, long-range ordered monolayer spin-coated from core-cladding liquid-crystalline pentathiophenes and a solution-processed high-k HfO2 -based nanoscale gate dielectric. These monolayer field-effect transistors are light-sensitive and are able to function as reporters to convert analyte binding events into electrical signals with ultrahigh sensitivity (≈10 ppb).